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	diff --git a/plugins/enigma/enigma.js b/plugins/enigma/enigma.js
	index fe2a599f5..94bcb2a0d 100644
	--- a/plugins/enigma/enigma.js
	+++ b/plugins/enigma/enigma.js
	@@ -1,703 +1,703 @@
	/* Enigma Plugin */

	window.rcmail && rcmail.addEventListener('init', function(evt) {
	if (rcmail.env.task == 'settings') {
	if (rcmail.gui_objects.keyslist) {
	rcmail.keys_list = new rcube_list_widget(rcmail.gui_objects.keyslist,
	{multiselect:true, draggable:false, keyboard:true});
	rcmail.keys_list
	.addEventListener('select', function(o) { rcmail.enigma_keylist_select(o); })
	.addEventListener('keypress', function(o) { rcmail.enigma_keylist_keypress(o); })
	.init()
	.focus();

	rcmail.enigma_list();

	rcmail.register_command('firstpage', function(props) { return rcmail.enigma_list_page('first'); });
	rcmail.register_command('previouspage', function(props) { return rcmail.enigma_list_page('previous'); });
	rcmail.register_command('nextpage', function(props) { return rcmail.enigma_list_page('next'); });
	rcmail.register_command('lastpage', function(props) { return rcmail.enigma_list_page('last'); });
	}

	if (rcmail.env.action == 'plugin.enigmakeys') {
	rcmail.register_command('search', function(props) {return rcmail.enigma_search(props); }, true);
	rcmail.register_command('reset-search', function(props) {return rcmail.enigma_search_reset(props); }, true);
	rcmail.register_command('plugin.enigma-import', function() { rcmail.enigma_import(); }, true);
	rcmail.register_command('plugin.enigma-import-search', function() { rcmail.enigma_import_search(); }, true);
	rcmail.register_command('plugin.enigma-key-export', function() { rcmail.enigma_export(); });
	rcmail.register_command('plugin.enigma-key-export-selected', function() { rcmail.enigma_export(true); });
	rcmail.register_command('plugin.enigma-key-import', function() { rcmail.enigma_key_import(); }, true);
	rcmail.register_command('plugin.enigma-key-import-search', function() { rcmail.enigma_key_import_search(); }, true);
	rcmail.register_command('plugin.enigma-key-delete', function(props) { return rcmail.enigma_delete(); });
	rcmail.register_command('plugin.enigma-key-create', function(props) { return rcmail.enigma_key_create(); }, true);
	rcmail.register_command('plugin.enigma-key-save', function(props) { return rcmail.enigma_key_create_save(); }, true);

	rcmail.addEventListener('responseafterplugin.enigmakeys', function() {
	rcmail.enable_command('plugin.enigma-key-export', rcmail.env.rowcount > 0);
	rcmail.triggerEvent('listupdate', {list: rcmail.keys_list, rowcount: rcmail.env.rowcount});
	});

	if (rcmail.gui_objects.importform) {
	// make sure Enter key in search input starts searching
	// instead of submitting the form
	$('#rcmimportsearch').keydown(function(e) {
	if (e.which == 13) {
	rcmail.enigma_import_search();
	return false;
	}
	});
	}
	}
	}
	else if (rcmail.env.task == 'mail') {
	if (rcmail.env.action == 'compose') {
	rcmail.addEventListener('beforesend', function(props) { rcmail.enigma_beforesend_handler(props); })
	.addEventListener('beforesavedraft', function(props) { rcmail.enigma_beforesavedraft_handler(props); });

	$('input,label', $('#enigmamenu')).mouseup(function(e) {
	// don't close the menu on mouse click inside
	e.stopPropagation();
	});

	- $('a.button.enigma').prop('tabindex', $('#messagetoolbar > a:first').prop('tabindex'));
	+ $('a.button.enigma').prop('tabindex', $('#messagetoolbar > a').first().prop('tabindex'));

	$.each(['encrypt', 'sign'], function() {
	var opt = this, input = $('#enigma' + opt + 'opt');

	if (rcmail.env['enigma_force_' + opt]) {
	input.prop('checked', true);
	}

	// Compose status bar in Elastic
	if (window.UI && UI.compose_status) {
	input.on('change', function() { UI.compose_status(opt, this.checked); }).trigger('change');
	}
	});
	}

	if (rcmail.env.enigma_password_request) {
	rcmail.enigma_password_request(rcmail.env.enigma_password_request);
	}
	}
	});


	/*********************************************************/
	/******* Enigma Settings/Keys/Certs UI *******/
	/*********************************************************/

	// Display key(s) import form
	rcube_webmail.prototype.enigma_key_import = function()
	{
	var dialog = $('<iframe>').attr('src', this.url('plugin.enigmakeys', {_a: 'import', _framed: 1})),
	import_func = function(e) {
	var win = dialog[0].contentWindow;
	win.rcmail.enigma_import();
	};

	this.enigma_import_dialog = this.simple_dialog(dialog, this.gettext('enigma.importkeys'), import_func, {
	button: 'import',
	width: 500,
	height: 150
	});
	};

	// Display key(s) search/import form
	rcube_webmail.prototype.enigma_key_import_search = function()
	{
	var dialog = $('<iframe>').attr('src', this.url('plugin.enigmakeys', {_a: 'import-search', _framed: 1})),
	search_func = function() {
	var win = dialog[0].contentWindow;
	win.rcmail.enigma_import_search();
	};

	this.enigma_import_dialog = this.simple_dialog(dialog, this.gettext('enigma.keyimportsearchlabel'), search_func, {
	button: 'search',
	width: 500,
	height: 150
	});
	};

	rcube_webmail.prototype.enigma_import_success = function()
	{
	var dialog = this.enigma_import_dialog \|\| parent.rcmail.enigma_import_dialog;
	dialog.dialog('destroy');
	};

	// Display key(s) generation form
	rcube_webmail.prototype.enigma_key_create = function()
	{
	this.enigma_loadframe('&_action=plugin.enigmakeys&_a=create&_nav=hide');
	};

	// Generate key(s) and submit them
	rcube_webmail.prototype.enigma_key_create_save = function()
	{
	var options, lock, users = [],
	password = $('#key-pass').val(),
	confirm = $('#key-pass-confirm').val(),
	size = $('#key-size').val();

	$('[name="identity[]"]:checked').each(function() {
	users.push({name: $(this).data('name') \|\| '', email: $(this).data('email')});
	});

	// validate the form
	if (!password \|\| !confirm) {
	this.alert_dialog(this.get_label('enigma.formerror'));
	return;
	}

	if (password != confirm) {
	this.alert_dialog(this.get_label('enigma.passwordsdiffer'));
	return;
	}

	if (!users.length) {
	this.alert_dialog(this.get_label('enigma.noidentselected'));
	return;
	}

	// generate keys
	// use OpenPGP.js if browser supports required features
	if (window.openpgp && (window.msCrypto \|\| (window.crypto && (window.crypto.getRandomValues \|\| window.crypto.subtle)))) {
	lock = this.set_busy(true, 'enigma.keygenerating');
	options = {
	numBits: size,
	userIds: users,
	passphrase: password
	};

	openpgp.generateKey(options).then(function(keypair) {
	// success
	var post = {_a: 'import', _keys: keypair.privateKeyArmored, _generated: 1,
	_passwd: password, _keyid: keypair.key.primaryKey.getFingerprint()};

	// send request to server
	rcmail.http_post('plugin.enigmakeys', post, lock);
	}, function(error) {
	// failure
	console.error(error);
	rcmail.set_busy(false, null, lock);
	rcmail.display_message(rcmail.get_label('enigma.keygenerateerror'), 'error');
	});
	}
	else {
	rcmail.display_message(rcmail.get_label('enigma.keygennosupport'), 'error');
	}
	};

	// Action executed after successful key generation and import
	rcube_webmail.prototype.enigma_key_create_success = function()
	{
	parent.rcmail.enigma_list(1);
	};

	// Delete key(s)
	rcube_webmail.prototype.enigma_delete = function()
	{
	var keys = this.keys_list.get_selection();

	if (!keys.length)
	return;

	this.confirm_dialog(this.get_label('enigma.keyremoveconfirm'), 'delete', function(e, ref) {
	var lock = ref.display_message(ref.get_label('enigma.keyremoving'), 'loading'),
	post = {_a: 'delete', _keys: keys};

	// send request to server
	ref.http_post('plugin.enigmakeys', post, lock);
	});
	};

	// Export key(s)
	rcube_webmail.prototype.enigma_export = function(selected)
	{
	var priv = false,
	list = this.keys_list,
	keys = selected ? list.get_selection().join(',') : '*',
	args = {_keys: keys};

	if (!keys.length)
	return;

	// find out whether selected keys are private
	if (keys == '*')
	priv = true;
	else
	$.each(list.get_selection(), function() {
	flags = $(list.rows[this].obj).data('flags');
	if (flags && flags.indexOf('p') >= 0) {
	priv = true;
	return false;
	}
	});

	// ask the user about including private key in the export
	if (priv)
	return this.show_popup_dialog(
	this.get_label('enigma.keyexportprompt'),
	this.get_label('enigma.exportkeys'),
	[{
	'class': 'export mainaction',
	text: this.get_label('enigma.onlypubkeys'),
	click: function(e) {
	rcmail.enigma_export_submit(args);
	$(this).remove();
	}
	},
	{
	'class': 'export',
	text: this.get_label('enigma.withprivkeys'),
	click: function(e) {
	args._priv = 1;
	rcmail.enigma_export_submit(args);
	$(this).remove();
	}
	},
	{
	'class': 'cancel',
	text: this.get_label('close'),
	click: function(e) {
	$(this).remove();
	}
	}],
	{width: 500}
	);

	this.enigma_export_submit(args);
	};

	// Sumbitting request for key(s) export
	// Done this way to handle password input
	rcube_webmail.prototype.enigma_export_submit = function(data)
	{
	var id = 'keyexport-' + new Date().getTime(),
	form = $('<form>').attr({target: id, method: 'post', style: 'display:none',
	action: '?_action=plugin.enigmakeys&_task=settings&_a=export'}),
	iframe = $('<iframe>').attr({name: id, style: 'display:none'})

	form.append($('<input>').attr({name: '_token', value: this.env.request_token}));
	$.each(data, function(i, v) {
	form.append($('<input>').attr({name: i, value: v}));
	});

	iframe.appendTo(document.body);
	form.appendTo(document.body).submit();
	};

	// Submit key(s) import form
	rcube_webmail.prototype.enigma_import = function()
	{
	var form, file, lock,
	id = 'keyimport-' + new Date().getTime();

	if (form = this.gui_objects.importform) {
	file = document.getElementById('rcmimportfile');
	if (file && !file.value) {
	this.alert_dialog(this.get_label('selectimportfile'));
	return;
	}

	lock = this.set_busy(true, 'importwait');
	$('<iframe>').attr({name: id, style: 'display:none'}).appendTo(document.body);
	$(form).attr({target: id, action: this.add_url(form.action, '_unlock', lock)}).submit();

	return true;
	}
	};

	// Ssearch for key(s) for import
	rcube_webmail.prototype.enigma_import_search = function()
	{
	var form, search;

	if (form = this.gui_objects.importform) {
	search = $('#rcmimportsearch').val();
	if (!search) {
	return;
	}

	this.enigma_find_publickey(search);
	}
	};

	// list row selection handler
	rcube_webmail.prototype.enigma_keylist_select = function(list)
	{
	var id = list.get_single_selection(), url;

	if (id)
	url = '&_action=plugin.enigmakeys&_a=info&_id=' + id;

	this.enigma_loadframe(url);
	this.enable_command('plugin.enigma-key-delete', 'plugin.enigma-key-export-selected', list.get_selection().length > 0);
	};

	rcube_webmail.prototype.enigma_keylist_keypress = function(list)
	{
	if (list.modkey == CONTROL_KEY)
	return;

	if (list.key_pressed == list.DELETE_KEY \|\| list.key_pressed == list.BACKSPACE_KEY)
	this.command('plugin.enigma-key-delete');
	else if (list.key_pressed == 33)
	this.command('previouspage');
	else if (list.key_pressed == 34)
	this.command('nextpage');
	};

	// load key frame
	rcube_webmail.prototype.enigma_loadframe = function(url)
	{
	var win;

	if (win = this.get_frame_window(this.env.contentframe)) {
	if (!url) {
	if (win.location && win.location.href.indexOf(this.env.blankpage) < 0)
	win.location.href = this.env.blankpage;
	if (this.env.frame_lock)
	this.set_busy(false, null, this.env.frame_lock);
	return;
	}

	this.env.frame_lock = this.set_busy(true, 'loading');
	win.location.href = this.env.comm_path + '&_framed=1' + url;
	}
	};

	// Search keys/certs
	rcube_webmail.prototype.enigma_search = function(props)
	{
	if (!props && this.gui_objects.qsearchbox)
	props = this.gui_objects.qsearchbox.value;

	if (props \|\| this.env.search_request) {
	var params = {'_a': 'search', '_q': props},
	lock = this.set_busy(true, 'searching');
	// if (this.gui_objects.search_filter)
	// addurl += '&_filter=' + this.gui_objects.search_filter.value;
	this.env.current_page = 1;
	this.enigma_loadframe();
	this.enigma_clear_list();
	this.http_post('plugin.enigmakeys', params, lock);
	}

	return false;
	};

	// Reset search filter and the list
	rcube_webmail.prototype.enigma_search_reset = function(props)
	{
	var s = this.env.search_request;
	this.reset_qsearch();

	if (s) {
	this.enigma_loadframe();
	this.enigma_clear_list();

	// refresh the list
	this.enigma_list();
	}

	return false;
	};

	// Keys/certs listing
	rcube_webmail.prototype.enigma_list = function(page, reset_frame)
	{
	if (this.is_framed())
	return parent.rcmail.enigma_list(page, reset_frame);

	var params = {'_a': 'list'},
	lock = this.set_busy(true, 'loading');

	this.env.current_page = page ? page : 1;

	if (this.env.search_request)
	params._q = this.env.search_request;
	if (page)
	params._p = page;

	this.enigma_clear_list(reset_frame);
	this.http_post('plugin.enigmakeys', params, lock);
	};

	// Change list page
	rcube_webmail.prototype.enigma_list_page = function(page)
	{
	if (page == 'next')
	page = this.env.current_page + 1;
	else if (page == 'last')
	page = this.env.pagecount;
	else if (page == 'prev' && this.env.current_page > 1)
	page = this.env.current_page - 1;
	else if (page == 'first' && this.env.current_page > 1)
	page = 1;

	this.enigma_list(page);
	};

	// Remove list rows
	rcube_webmail.prototype.enigma_clear_list = function(reset_frame)
	{
	if (reset_frame !== false)
	this.enigma_loadframe();

	if (this.keys_list)
	this.keys_list.clear(true);

	this.enable_command('plugin.enigma-key-delete', 'plugin.enigma-key-delete-selected', false);
	this.triggerEvent('listupdate', {list: this.keys_list, rowcount: this.keys_list.rowcount});
	};

	// Adds a row to the list
	rcube_webmail.prototype.enigma_add_list_row = function(r)
	{
	if (!this.gui_objects.keyslist \|\| !this.keys_list)
	return false;

	var list = this.keys_list,
	tbody = this.gui_objects.keyslist.tBodies[0],
	rowcount = tbody.rows.length,
	even = rowcount%2,
	// for performance use DOM instead of jQuery here
	row = document.createElement('tr'),
	col = document.createElement('td');

	row.id = 'rcmrow' + r.id;
	row.className = 'message';
	if (r.flags) $(row).data('flags', r.flags);

	col.className = 'name';
	col.innerHTML = r.name;
	row.appendChild(col);
	list.insert_row(row);
	};


	/*********************************************************/
	/******* Enigma Message methods *******/
	/*********************************************************/

	// handle message send/save action
	rcube_webmail.prototype.enigma_beforesend_handler = function(props)
	{
	this.env.last_action = 'send';
	this.enigma_compose_handler(props);
	};

	rcube_webmail.prototype.enigma_beforesavedraft_handler = function(props)
	{
	this.env.last_action = 'savedraft';
	this.enigma_compose_handler(props);
	};

	rcube_webmail.prototype.enigma_compose_handler = function(props)
	{
	var form = this.gui_objects.messageform;

	// copy inputs from enigma menu to the form
	$('#enigmamenu input').each(function() {
	var id = this.id + '_cpy', input = $('#' + id);

	if (!input.length) {
	input = $(this).clone();
	input.prop({id: id, type: 'hidden'}).appendTo(form);
	}

	input.val(this.checked ? '1' : '');
	});

	// disable signing when saving drafts
	if (this.env.last_action == 'savedraft') {
	$('input[name="_enigma_sign"]', form).val(0);
	}
	};

	// Import attached keys/certs file
	rcube_webmail.prototype.enigma_import_attachment = function(mime_id)
	{
	var lock = this.set_busy(true, 'loading'),
	post = {_uid: this.env.uid, _mbox: this.env.mailbox, _part: mime_id};

	this.http_post('plugin.enigmaimport', post, lock);

	return false;
	};

	// password request popup
	rcube_webmail.prototype.enigma_password_request = function(data)
	{
	if (!data \|\| !data.keyid) {
	return;
	}

	var ref = this,
	msg = this.get_label('enigma.enterkeypass'),
	myprompt = $('<div class="prompt">'),
	myprompt_content = $('<p class="message">')
	.appendTo(myprompt),
	myprompt_input = $('<input>').attr({type: 'password', size: 30})
	.keypress(function(e) {
	if (e.which == 13)
	(ref.is_framed() ? window.parent.$ : $)('.ui-dialog-buttonpane button.mainaction:visible').click();
	})
	.appendTo(myprompt);

	data.key = data.keyid;
	if (data.keyid.length > 8)
	data.keyid = data.keyid.substr(data.keyid.length - 8);

	$.each(['keyid', 'user'], function() {
	msg = msg.replace('$' + this, data[this]);
	});

	myprompt_content.text(msg);

	this.show_popup_dialog(myprompt, this.get_label('enigma.enterkeypasstitle'),
	[{
	text: this.get_label('ok'),
	'class': 'mainaction save unlock',
	click: function(e) {
	e.stopPropagation();

	var jq = ref.is_framed() ? window.parent.$ : $;

	data.password = myprompt_input.val();

	if (!data.password) {
	myprompt_input.focus();
	return;
	}

	ref.enigma_password_submit(data);
	jq(this).remove();
	}
	},
	{
	text: this.get_label('cancel'),
	'class': 'cancel',
	click: function(e) {
	var jq = ref.is_framed() ? window.parent.$ : $;
	e.stopPropagation();
	jq(this).remove();
	}
	}], {width: 400});

	if (this.is_framed() && parent.rcmail.message_list) {
	// this fixes bug when pressing Enter on "Save" button in the dialog
	parent.rcmail.message_list.blur();
	}
	};

	// submit entered password
	rcube_webmail.prototype.enigma_password_submit = function(data)
	{
	var lock, form;

	if (this.env.action == 'compose' && !data['compose-init']) {
	return this.enigma_password_compose_submit(data);
	}
	else if (this.env.action == 'plugin.enigmakeys' && (form = this.gui_objects.importform)) {
	if (!$('input[name="_keyid"]', form).length) {
	$(form).append($('<input>').attr({type: 'hidden', name: '_keyid', value: data.key}))
	.append($('<input>').attr({type: 'hidden', name: '_passwd', value: data.password}))
	}

	return this.enigma_import();
	}

	lock = data.nolock ? null : this.set_busy(true, 'loading');
	form = $('<form>')
	.attr({method: 'post', action: data.action \|\| location.href, style: 'display:none'})
	.append($('<input>').attr({type: 'hidden', name: '_keyid', value: data.key}))
	.append($('<input>').attr({type: 'hidden', name: '_passwd', value: data.password}))
	.append($('<input>').attr({type: 'hidden', name: '_token', value: this.env.request_token}))
	.append($('<input>').attr({type: 'hidden', name: '_unlock', value: lock}));

	// Additional form fields for request parameters
	$.each(data, function(i, v) {
	if (i.indexOf('input') == 0)
	form.append($('<input>').attr({type: 'hidden', name: i.substring(5), value: v}))
	});

	if (data.iframe) {
	var name = 'enigma_frame_' + (new Date()).getTime(),
	frame = $('<iframe>').attr({style: 'display:none', name: name}).appendTo(document.body);
	form.attr('target', name);
	}

	form.appendTo(document.body).submit();
	};

	// submit entered password - in mail compose page
	rcube_webmail.prototype.enigma_password_compose_submit = function(data)
	{
	var form = this.gui_objects.messageform;

	if (!$('input[name="_keyid"]', form).length) {
	$(form).append($('<input>').attr({type: 'hidden', name: '_keyid', value: data.key}))
	.append($('<input>').attr({type: 'hidden', name: '_passwd', value: data.password}));
	}
	else {
	$('input[name="_keyid"]', form).val(data.key);
	$('input[name="_passwd"]', form).val(data.password);
	}

	this.submit_messageform(this.env.last_action == 'savedraft');
	};

	// Display no-key error with key search button
	rcube_webmail.prototype.enigma_key_not_found = function(data)
	{
	var params = {width: 500, dialogClass: 'error'},
	buttons = [{
	'class': 'mainaction search',
	text: data.button,
	click: function() {
	$(this).remove();
	rcmail.enigma_find_publickey(data.email);
	}
	}];

	if (data.mode == 'encrypt') {
	buttons.push({
	'class': 'send',
	text: rcmail.get_label('enigma.sendunencrypted'),
	click: function(e) {
	$(this).remove();
	$('#enigmaencryptopt').prop('checked', false);
	rcmail.command('send', {nocheck: true}, e.target, e.originalEvent);
	}
	});
	}

	buttons.push({
	'class': 'cancel',
	text: this.get_label('cancel'),
	click: function() {
	$(this).remove();
	}
	});

	return this.show_popup_dialog(data.text, data.title, buttons, params);
	};

	// Search for a public key on the key server
	rcube_webmail.prototype.enigma_find_publickey = function(email)
	{
	this.mailvelope_search_pubkeys([email],
	function(status) {},
	function(key) {
	var lock = rcmail.set_busy(true, 'enigma.importwait'),
	post = {_a: 'import', _keys: key};

	if (rcmail.env.action == 'plugin.enigmakeys')
	post._refresh = 1;

	// send request to server
	rcmail.http_post('plugin.enigmakeys', post, lock);
	}
	);
	};
	diff --git a/plugins/managesieve/managesieve.js b/plugins/managesieve/managesieve.js
	index 6afc25409..f81f78a41 100644
	--- a/plugins/managesieve/managesieve.js
	+++ b/plugins/managesieve/managesieve.js
	@@ -1,1200 +1,1200 @@
	/**
	* (Manage)Sieve Filters plugin
	*
	* @licstart The following is the entire license notice for the
	* JavaScript code in this file.
	*
	* Copyright (c) 2012-2014, The Roundcube Dev Team
	*
	* The JavaScript code in this page is free software: you can redistribute it
	* and/or modify it under the terms of the GNU General Public License
	* as published by the Free Software Foundation, either version 3 of
	* the License, or (at your option) any later version.
	*
	* @licend The above is the entire license notice
	* for the JavaScript code in this file.
	*/

	if (window.rcmail) {
	rcmail.addEventListener('init', function(evt) {
	// add managesieve-create command to message_commands array,
	// so it's state will be updated on message selection/unselection
	if (rcmail.env.task == 'mail') {
	if (rcmail.env.action != 'show')
	rcmail.env.message_commands.push('managesieve-create');
	else
	rcmail.enable_command('managesieve-create', true);
	}

	if (rcmail.env.task == 'mail' \|\| rcmail.env.action.startsWith('plugin.managesieve')) {
	// Create layer for form tips
	if (!rcmail.env.framed) {
	rcmail.env.ms_tip_layer = $('<div id="managesieve-tip" class="popupmenu"></div>');
	rcmail.env.ms_tip_layer.appendTo(document.body);
	}
	}

	// register commands
	rcmail.register_command('plugin.managesieve-save', function() { rcmail.managesieve_save() });
	rcmail.register_command('plugin.managesieve-act', function() { rcmail.managesieve_act() });
	rcmail.register_command('plugin.managesieve-add', function() { rcmail.managesieve_add() });
	rcmail.register_command('plugin.managesieve-del', function() { rcmail.managesieve_del() });
	rcmail.register_command('plugin.managesieve-move', function() { rcmail.managesieve_move() });
	rcmail.register_command('plugin.managesieve-setadd', function() { rcmail.managesieve_setadd() });
	rcmail.register_command('plugin.managesieve-setdel', function() { rcmail.managesieve_setdel() });
	rcmail.register_command('plugin.managesieve-setact', function() { rcmail.managesieve_setact() });
	rcmail.register_command('plugin.managesieve-setget', function() { rcmail.managesieve_setget() });
	rcmail.register_command('plugin.managesieve-seteditraw', function() { rcmail.managesieve_seteditraw() });

	if (rcmail.env.action.startsWith('plugin.managesieve')) {
	if (rcmail.gui_objects.sieveform) {
	rcmail.enable_command('plugin.managesieve-save', true);
	sieve_form_init();
	}
	else if (rcmail.gui_objects.sievesetrawform) {
	rcmail.enable_command('plugin.managesieve-save', true);
	sieve_raw_editor_init();
	}
	else {
	rcmail.enable_command('plugin.managesieve-add', !rcmail.env.sieveconnerror && $.inArray('new_rule', rcmail.env.managesieve_disabled_actions) == -1);
	rcmail.enable_command('plugin.managesieve-setadd', !rcmail.env.sieveconnerror && $.inArray('new_set', rcmail.env.managesieve_disabled_actions) == -1);
	}

	var setcnt, set = rcmail.env.currentset;

	if (rcmail.gui_objects.filterslist) {
	rcmail.filters_list = new rcube_list_widget(rcmail.gui_objects.filterslist,
	{multiselect:false, draggable:true, keyboard:true});

	rcmail.filters_list
	.addEventListener('select', function(e) { rcmail.managesieve_select(e); })
	.addEventListener('dragstart', function(e) { rcmail.managesieve_dragstart(e); })
	.addEventListener('dragend', function(e) { rcmail.managesieve_dragend(e); })
	.addEventListener('initrow', function(row) {
	row.obj.onmouseover = function() { rcmail.managesieve_focus_filter(row); };
	row.obj.onmouseout = function() { rcmail.managesieve_unfocus_filter(row); };
	})
	.init();
	}

	if (rcmail.gui_objects.filtersetslist) {
	rcmail.filtersets_list = new rcube_list_widget(rcmail.gui_objects.filtersetslist,
	{multiselect:false, draggable:false, keyboard:true});

	rcmail.filtersets_list.init().focus();

	if (set != null) {
	$('#filterset-name').text(set);
	set = rcmail.managesieve_setid(set);
	rcmail.filtersets_list.select(set);
	}

	// attach select event after initial record was selected
	rcmail.filtersets_list.addEventListener('select', function(e) { rcmail.managesieve_setselect(e); });

	setcnt = rcmail.filtersets_list.rowcount;
	rcmail.enable_command('plugin.managesieve-set', true);
	rcmail.enable_command('plugin.managesieve-setact', setcnt > 0 && $.inArray('enable_disable_set', rcmail.env.managesieve_disabled_actions) == -1);
	rcmail.enable_command('plugin.managesieve-setget', setcnt > 0 && $.inArray('download_set', rcmail.env.managesieve_disabled_actions) == -1);
	rcmail.enable_command('plugin.managesieve-setdel', setcnt > 1 && $.inArray('delete_set', rcmail.env.managesieve_disabled_actions) == -1);
	rcmail.enable_command('plugin.managesieve-seteditraw', setcnt > 0 && rcmail.env.raw_sieve_editor);

	// Fix dragging filters over sets list
	$('tr', rcmail.gui_objects.filtersetslist).each(function (i, e) { rcmail.managesieve_fixdragend(e); });
	}
	}

	if (rcmail.gui_objects.sieveform && rcmail.env.rule_disabled)
	$('#disabled').attr('checked', true);
	});
	};

	/*********************************************************/
	/******* Managesieve UI methods *******/
	/*********************************************************/

	rcube_webmail.prototype.managesieve_add = function()
	{
	this.load_managesieveframe('_nav=hide', true);
	};

	rcube_webmail.prototype.managesieve_del = function()
	{
	var id = this.filters_list.get_single_selection();
	this.confirm_dialog(this.get_label('managesieve.filterdeleteconfirm'), 'delete', function(e, ref) {
	var post = '_act=delete&_fid=' + ref.filters_list.rows[id].uid,
	lock = ref.set_busy(true, 'loading');

	ref.http_post('plugin.managesieve-action', post, lock);
	});
	};

	rcube_webmail.prototype.managesieve_act = function()
	{
	var id = this.filters_list.get_single_selection(),
	lock = this.set_busy(true, 'loading');

	this.http_post('plugin.managesieve-action',
	'_act=act&_fid='+this.filters_list.rows[id].uid, lock);
	};

	// Filter selection
	rcube_webmail.prototype.managesieve_select = function(list)
	{
	var id = list.get_single_selection();

	if (id != null) {
	id = list.rows[id].uid;
	this.load_managesieveframe('_fid=' + id);
	}

	var has_id = typeof(id) != 'undefined' && id != null;

	this.enable_command('plugin.managesieve-act', has_id);
	this.enable_command('plugin.managesieve-del', has_id && $.inArray('delete_rule', rcmail.env.managesieve_disabled_actions) == -1);
	};

	// Set selection
	rcube_webmail.prototype.managesieve_setselect = function(list)
	{
	this.enable_command('plugin.managesieve-setdel', list.rowcount > 1 && $.inArray('delete_set', rcmail.env.managesieve_disabled_actions) == -1);
	this.enable_command('plugin.managesieve-setact', list.rowcount > 0 && $.inArray('enable_disable_set', rcmail.env.managesieve_disabled_actions) == -1);
	this.enable_command('plugin.managesieve-setget', list.rowcount > 0 && $.inArray('delete_set', rcmail.env.managesieve_disabled_actions) == -1);
	this.enable_command('plugin.managesieve-seteditraw', list.rowcount > 0 && this.env.raw_sieve_editor);

	if (rcmail.env.contextmenu_opening)
	return;

	this.show_contentframe(false);
	this.filters_list.clear(true);

	var id = list.get_single_selection();
	if (id != null) {
	this.managesieve_list(this.env.filtersets[id]);
	$('#filterset-name').text(this.env.filtersets[id]);
	}
	};

	rcube_webmail.prototype.managesieve_rowid = function(id)
	{
	var i, rows = this.filters_list.rows;

	for (i in rows)
	if (rows[i] != null && rows[i].uid == id)
	return i;
	};

	// Returns set's identifier
	rcube_webmail.prototype.managesieve_setid = function(name)
	{
	for (var i in this.env.filtersets)
	if (this.env.filtersets[i] == name)
	return i;
	};

	// Filters listing request
	rcube_webmail.prototype.managesieve_list = function(script)
	{
	var lock = this.set_busy(true, 'loading');

	this.http_post('plugin.managesieve-action', '_act=list&_set='+urlencode(script), lock);
	};

	// Script download request
	rcube_webmail.prototype.managesieve_setget = function()
	{
	var id = this.filtersets_list.get_single_selection(),
	script = this.env.filtersets[id];

	this.goto_url('plugin.managesieve-action', {_act: 'setget', _set: script}, false, true);
	};

	// Set activate/deactivate request
	rcube_webmail.prototype.managesieve_setact = function()
	{
	var id = this.filtersets_list.get_single_selection(),
	lock = this.set_busy(true, 'loading'),
	script = this.env.filtersets[id],
	action = $('#rcmrow'+id).hasClass('disabled') ? 'setact' : 'deact';

	this.http_post('plugin.managesieve-action', '_act='+action+'&_set='+urlencode(script), lock);
	};

	// Set delete request
	rcube_webmail.prototype.managesieve_setdel = function()
	{
	var id = this.filtersets_list.get_single_selection();
	this.confirm_dialog(this.get_label('managesieve.setdeleteconfirm'), 'delete', function(e, ref) {
	var script = ref.env.filtersets[id],
	lock = ref.set_busy(true, 'loading');

	ref.http_post('plugin.managesieve-action', '_act=setdel&_set=' + urlencode(script), lock);
	});
	};

	// Set edit raw request
	rcube_webmail.prototype.managesieve_seteditraw = function()
	{
	var id = this.filtersets_list.get_single_selection(),
	script = this.env.filtersets[id];

	this.load_managesieveframe('_nav=hide&_seteditraw=1&_set=' + urlencode(script), true);
	};

	// Set add request
	rcube_webmail.prototype.managesieve_setadd = function()
	{
	this.load_managesieveframe('_nav=hide&_newset=1', true);
	};

	rcube_webmail.prototype.managesieve_updatelist = function(action, o)
	{
	this.set_busy(true);

	switch (action) {
	// Delete filter row
	case 'del':
	var id = o.id, list = this.filters_list;

	list.remove_row(this.managesieve_rowid(o.id));
	this.show_contentframe(false);
	this.reset_filters_list();

	// filter identifiers changed, fix the list
	$('tr', this.filters_list.list).each(function() {
	// remove hidden (deleted) rows
	if (this.style.display == 'none') {
	$(this).detach();
	return;
	}

	var rowid = this.id.substr(6);

	// remove all attached events
	$(this).off();

	// update row id
	if (rowid > id) {
	this.uid = rowid - 1;
	$(this).attr('id', 'rcmrow' + this.uid);
	}
	});
	list.init();

	break;

	// Update filter row
	case 'update':
	var i, row = $('#rcmrow'+this.managesieve_rowid(o.id));

	if (o.name)
	$('td', row).text(o.name);
	if (o.disabled)
	row.addClass('disabled');
	else
	row.removeClass('disabled');

	$('#disabled', $('iframe').contents()).prop('checked', o.disabled);

	break;

	// Add filter row to the list
	case 'add':
	var list = this.filters_list,
	row = $('<tr><td class="name"></td></tr>');

	$('td', row).text(o.name);
	row.attr('id', 'rcmrow'+o.id);
	if (o.disabled)
	row.addClass('disabled');

	list.insert_row(row.get(0));
	list.highlight_row(o.id);

	this.enable_command('plugin.managesieve-del', $.inArray('delete_rule', rcmail.env.managesieve_disabled_actions) == -1);
	this.enable_command('plugin.managesieve-act', true);

	break;

	// Filling rules list
	case 'list':
	var i, tr, td, el, list = this.filters_list;

	if (o.clear)
	list.clear();

	for (i in o.list) {
	el = o.list[i];
	tr = document.createElement('TR');
	td = document.createElement('TD');

	$(td).text(el.name);
	td.className = 'name';
	tr.id = 'rcmrow' + el.id;
	if (el['class'])
	tr.className = el['class'];
	tr.appendChild(td);

	list.insert_row(tr);
	}

	if (o.set)
	list.highlight_row(o.set);
	else
	this.enable_command('plugin.managesieve-del', 'plugin.managesieve-act', false);

	break;

	// Sactivate/deactivate set
	case 'setact':
	var id = this.managesieve_setid(o.name), row = $('#rcmrow' + id);
	if (o.active) {
	if (o.all)
	$('tr', this.gui_objects.filtersetslist).addClass('disabled');
	row.removeClass('disabled');
	}
	else
	row.addClass('disabled');

	break;

	// Delete set row
	case 'setdel':
	var id = this.managesieve_setid(o.name);

	this.filters_list.clear();
	this.show_contentframe(false);
	this.enable_command('plugin.managesieve-setdel', 'plugin.managesieve-setact',
	'plugin.managesieve-setget', 'plugin.managesieve-seteditraw', false);

	this.filtersets_list.remove_row(id, true);
	delete this.env.filtersets[id];
	break;

	// Create set row
	case 'setadd':
	var id = 'S' + new Date().getTime(),
	list = this.filtersets_list,
	row = $('<tr class="disabled"><td class="name"></td></tr>');

	$('td', row).text(o.name);
	row.attr('id', 'rcmrow'+id);

	this.env.filtersets[id] = o.name;
	list.insert_row(row.get(0));

	// move row into its position on the list
	if (o.index != list.rowcount-1) {
	row.detach();
	var elem = $('tr:visible', list.list).get(o.index);
	row.insertBefore(elem);
	}

	list.select(id);

	// Fix dragging filters over sets list
	this.managesieve_fixdragend(row);

	break;

	case 'refresh':
	this.reset_filters_list(true);
	break;
	}

	this.set_busy(false);
	};

	// Resets filters list state
	rcube_webmail.prototype.reset_filters_list = function(reload)
	{
	this.filters_list.clear_selection();
	this.enable_command('plugin.managesieve-act', 'plugin.managesieve-del', false);

	if (reload) {
	var id = this.filtersets_list.get_single_selection();

	this.filters_list.clear(true);
	this.managesieve_list(this.env.filtersets[id]);
	}
	};

	// load filter frame
	rcube_webmail.prototype.load_managesieveframe = function(add_url, reset)
	{
	if (reset)
	this.reset_filters_list();

	if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
	var lock = this.set_busy(true, 'loading'),
	target = window.frames[this.env.contentframe];

	target.location.href = this.env.comm_path
	+ '&_action=plugin.managesieve-action&_framed=1&_unlock=' + lock
	+ (add_url ? ('&' + add_url) : '');
	}
	};

	// load filter frame
	rcube_webmail.prototype.managesieve_dragstart = function(list)
	{
	var id = this.filters_list.get_single_selection();

	this.drag_active = true;
	this.drag_filter = id;
	};

	rcube_webmail.prototype.managesieve_dragend = function(e)
	{
	if (this.drag_active) {
	if (this.drag_filter_target) {
	var lock = this.set_busy(true, 'loading');

	this.show_contentframe(false);
	this.http_post('plugin.managesieve-action', '_act=move&_fid='+this.drag_filter
	+'&_to='+this.drag_filter_target, lock);
	}
	this.drag_active = false;
	}
	};

	// Fixes filters dragging over sets list
	// @TODO: to be removed after implementing copying filters
	rcube_webmail.prototype.managesieve_fixdragend = function(elem)
	{
	var p = this;
	$(elem).on('mouseup' + ((bw.iphone \|\| bw.ipad) ? ' touchend' : ''), function(e) {
	if (p.drag_active)
	p.filters_list.drag_mouse_up(e);
	});
	};

	rcube_webmail.prototype.managesieve_focus_filter = function(row)
	{
	var id = row.id.replace(/^rcmrow/, '');
	if (this.drag_active && id != this.drag_filter) {
	this.drag_filter_target = id;
	$(row.obj).addClass(id < this.drag_filter ? 'filtermoveup' : 'filtermovedown');
	}
	};

	rcube_webmail.prototype.managesieve_unfocus_filter = function(row)
	{
	if (this.drag_active) {
	$(row.obj).removeClass('filtermoveup filtermovedown');
	this.drag_filter_target = null;
	}
	};

	/*********************************************************/
	/******* Filter Form methods *******/
	/*********************************************************/

	// Form submition
	rcube_webmail.prototype.managesieve_save = function()
	{
	if (this.env.action == 'plugin.managesieve-vacation') {
	var data = $(this.gui_objects.sieveform).serialize();
	this.http_post('plugin.managesieve-vacation', data, this.display_message(this.get_label('managesieve.vacation.saving'), 'loading'));
	return;
	}

	if (this.env.action == 'plugin.managesieve-forward') {
	var data = $(this.gui_objects.sieveform).serialize();
	this.http_post('plugin.managesieve-forward', data, this.display_message(this.get_label('managesieve.forward.saving'), 'loading'));
	return;
	}

	if (this.gui_objects.sieveform) {
	if (parent.rcmail && parent.rcmail.filters_list && this.gui_objects.sieveform.name != 'filtersetform') {
	var id = parent.rcmail.filters_list.get_single_selection();
	if (id != null)
	this.gui_objects.sieveform.elements['_fid'].value = parent.rcmail.filters_list.rows[id].uid;
	}
	this.gui_objects.sieveform.submit();
	}
	else if (this.gui_objects.sievesetrawform) {
	this.gui_objects.sievesetrawform.submit();
	}
	};

	// Operations on filters form
	rcube_webmail.prototype.managesieve_ruleadd = function(id)
	{
	this.http_post('plugin.managesieve-action', '_act=ruleadd&_rid='+id);
	};

	rcube_webmail.prototype.managesieve_rulefill = function(content, id, after)
	{
	if (content != '') {
	// create new element
	var div = $('#rules')[0],
	row = $('<div>').attr({'class': 'rulerow', id: 'rulerow'+id})
	.html(content);

	this.managesieve_insertrow(div, row, after);

	// initialize smart list inputs
	$('textarea[data-type="list"]', row).each(function() {
	smart_field_init(this);
	});

	this.managesieve_formbuttons(div);
	}
	};

	rcube_webmail.prototype.managesieve_ruledel = function(id)
	{
	if ($('#ruledel'+id).hasClass('disabled'))
	return;

	this.confirm_dialog(this.get_label('managesieve.ruledeleteconfirm'), 'delete', function(e, ref) {
	var row = document.getElementById('rulerow'+id);
	row.parentNode.removeChild(row);
	ref.managesieve_formbuttons(document.getElementById('rules'));
	});
	};

	rcube_webmail.prototype.managesieve_actionadd = function(id)
	{
	this.http_post('plugin.managesieve-action', '_act=actionadd&_aid='+id);
	};

	rcube_webmail.prototype.managesieve_actionfill = function(content, id, after)
	{
	if (content != '') {
	var div = $('#actions')[0],
	row = $('<div>').attr({'class': 'actionrow', id: 'actionrow'+id})
	.html(content);

	this.managesieve_insertrow(div, row, after);

	// initialize smart list inputs
	$('textarea[data-type="list"]', row).each(function() {
	smart_field_init(this);
	});

	this.managesieve_formbuttons(div);
	}
	};

	rcube_webmail.prototype.managesieve_actiondel = function(id)
	{
	if ($('#actiondel'+id).hasClass('disabled'))
	return;

	this.confirm_dialog(this.get_label('managesieve.actiondeleteconfirm'), 'delete', function(e, ref) {
	var row = document.getElementById('actionrow'+id);
	row.parentNode.removeChild(row);
	ref.managesieve_formbuttons(document.getElementById('actions'));
	});
	};

	// insert rule/action row in specified place on the list
	rcube_webmail.prototype.managesieve_insertrow = function(div, row, after)
	{
	var node = $('#' + ($(div).attr('id') == 'rules' ? 'rulerow' : 'actionrow') + after)[0];

	if (node)
	$(row).insertAfter(node);
	else
	$(div).append(row);

	this.triggerEvent('managesieve.insertrow', {obj: row});
	};

	// update Delete buttons status
	rcube_webmail.prototype.managesieve_formbuttons = function(div)
	{
	var buttons = $('a.delete', div);

	buttons.removeClass('disabled');
	if (buttons.length == 1)
	buttons.addClass('disabled');
	};

	// update vacation addresses field with user identities
	rcube_webmail.prototype.managesieve_vacation_addresses = function(id)
	{
	var lock = this.set_busy(true, 'loading');
	this.http_post('plugin.managesieve-action', {_act: 'addresses', _aid: id}, lock);
	};

	// update vacation addresses field with user identities
	rcube_webmail.prototype.managesieve_vacation_addresses_update = function(id, addresses)
	{
	var field = $('#vacation_addresses,#action_addresses' + (id \|\| ''));
	smart_field_reset(field.get(0), addresses);
	};

	function rule_header_select(id)
	{
	var is_header,
	obj = document.getElementById('header' + id),
	size = document.getElementById('rule_size' + id),
	msg = document.getElementById('rule_message' + id),
	op = document.getElementById('rule_op' + id),
	header = document.getElementById('custom_header' + id + '_list'),
	custstr = document.getElementById('custom_var' + id + '_list'),
	mod = document.getElementById('rule_mod' + id),
	trans = document.getElementById('rule_trans' + id),
	comp = document.getElementById('rule_comp' + id),
	mime = document.getElementById('rule_mime' + id),
	mime_part = document.getElementById('rule_mime_part' + id),
	datepart = document.getElementById('rule_date_part' + id),
	dateheader = document.getElementById('rule_date_header_div' + id),
	rule = $('#rule_op' + id),
	h = obj.value,
	set = [op, header, custstr, mod, trans, comp, size, mime, mime_part];

	if (h == 'size') {
	if (msg) set.push(msg);
	$.each(set, function() { if (this != window) this.style.display = 'none'; });
	size.style.display = '';
	}
	else if (h == 'message' && msg) {
	$.each(set, function() { if (this != window) this.style.display = 'none'; });
	msg.style.display = '';
	}
	else {
	is_header = h != 'body' && h != 'currentdate' && h != 'date' && h != 'string';
	header.style.display = h != '...' ? 'none' : '';
	custstr.style.display = h != 'string' ? 'none' : '';
	size.style.display = 'none';
	op.style.display = '';
	comp.style.display = '';
	mod.style.display = is_header ? '' : 'none';
	trans.style.display = h == 'body' ? '' : 'none';
	if (mime)
	mime.style.display = is_header ? '' : 'none';
	if (mime_part)
	mime_part.style.display = is_header ? '' : 'none';
	if (msg)
	msg.style.display = h == 'message' ? '' : 'none';
	}

	if (datepart)
	datepart.style.display = h == 'currentdate' \|\| h == 'date' ? 'inline' : 'none';
	if (dateheader)
	dateheader.style.display = h == 'date' ? '' : 'none';

	$('[value="exists"],[value="notexists"]', rule).prop('disabled', h == 'string');
	if (!rule.val())
	rule.val('contains');

	rule_op_select(op, id, h);
	rule_mod_select(id, h);
	rule_mime_select(id);

	obj.style.width = h == '...' ? '40px' : '';
	};

	function rule_op_select(obj, id, header)
	{
	var target = document.getElementById('rule_target' + id + '_list');

	if (!header)
	header = document.getElementById('header' + id).value;

	target.style.display = obj.value.match(/^(exists\|notexists)$/) \|\| header.match(/^(size\|message)$/) ? 'none' : '';
	};

	function rule_trans_select(id)
	{
	var obj = document.getElementById('rule_trans_op' + id),
	target = document.getElementById('rule_trans_type' + id);

	target.style.display = obj.value != 'content' ? 'none' : 'inline';
	};

	function rule_mod_select(id, header)
	{
	var obj = document.getElementById('rule_mod_op' + id),
	target = document.getElementById('rule_mod_type' + id),
	duplicate = document.getElementById('rule_duplicate_div' + id),
	index = document.getElementById('rule_index_div' + id);

	if (!header)
	header = document.getElementById('header' + id).value;

	target.style.display = obj.value != 'address' && obj.value != 'envelope' ? 'none' : '';

	if (index)
	index.style.display = !header.match(/^(body\|currentdate\|size\|message\|string)$/) && obj.value != 'envelope' ? '' : 'none';

	if (duplicate)
	duplicate.style.display = header == 'message' ? '' : 'none';
	};

	function rule_join_radio(value)
	{
	$('#rules').css('display', value == 'any' ? 'none' : 'block');
	};

	function rule_adv_switch(id, elem)
	{
	var elem = $(elem), enabled = elem.hasClass('hide'), adv = $('#rule_advanced'+id);

	if (enabled) {
	adv.get(0).style.display = 'none';
	elem.removeClass('hide').addClass('show');
	}
	else {
	adv.get(0).style.display = '';
	elem.removeClass('show').addClass('hide');
	}
	};

	function rule_mime_select(id)
	{
	var elem = $('#rule_mime_type' + id),
	param_elem = $('#rule_mime_param' + id + '_list');

	if (param_elem.length)
	param_elem[0].style.display = elem.val() == 'param' ? '' : 'none';
	};

	function action_type_select(id)
	{
	var obj = document.getElementById('action_type' + id),
	v = obj.value, enabled = {},
	elems = {
	mailbox: document.getElementById('action_mailbox' + id),
	target: document.getElementById('redirect_target' + id),
	target_area: document.getElementById('action_target_area' + id),
	flags: document.getElementById('action_flags' + id),
	vacation: document.getElementById('action_vacation' + id),
	forward: document.getElementById('action_forward' + id),
	set: document.getElementById('action_set' + id),
	notify: document.getElementById('action_notify' + id),
	addheader: document.getElementById('action_addheader' + id),
	deleteheader: document.getElementById('action_deleteheader' + id)
	};

	if (v == 'fileinto' \|\| v == 'fileinto_copy') {
	enabled.mailbox = 1;
	}
	else if (v == 'redirect' \|\| v == 'redirect_copy') {
	enabled.target = 1;
	}
	else if (v.match(/^reject\|ereject$/)) {
	enabled.target_area = 1;
	}
	else if (v.match(/^(add\|set\|remove)flag$/)) {
	enabled.flags = 1;
	}
	else if (v.match(/^(vacation\|forward\|set\|notify\|addheader\|deleteheader)$/)) {
	enabled[v] = 1;
	}

	for (var x in elems) {
	if (elems[x])
	elems[x].style.display = !enabled[x] ? 'none' : 'inline';
	}
	};

	function vacation_action_select()
	{
	var selected = $('#vacation_action').val();

	$('#action_target_span')[selected == 'discard' \|\| selected == 'keep' ? 'hide' : 'show']();
	};

	// Inititalizes smart list input
	function smart_field_init(field)
	{
	if (window.UI && UI.smart_field_init)
	return UI.smart_field_init(field);

	var id = field.id + '_list',
	area = $('<span class="listarea"></span>'),
	list = field.value ? field.value.split("\n") : [''];

	if ($('#'+id).length)
	return;

	// add input rows
	$.each(list, function(i, v) {
	area.append(smart_field_row(v, field.name, i, $(field).data('size')));
	});

	area.attr('id', id);
	field = $(field);

	if (field.attr('disabled'))
	area.hide();
	// disable the original field anyway, we don't want it in POST
	else
	field.prop('disabled', true);

	if (field.data('hidden'))
	area.hide();

	field.after(area);

	if (field.hasClass('error')) {
	area.addClass('error');
	rcmail.managesieve_tip_register([[id, field.data('tip-class'), field.data('tip-msg')]]);
	}
	};

	function smart_field_row(value, name, idx, size)
	{
	// build row element content
	var input, content = '<span class="listelement">'
	+ '<span class="reset"></span><input type="text"></span>',
	elem = $(content),
	attrs = {value: value, name: name + '[]'};

	if (size)
	attrs.size = size;

	input = $('input', elem).attr(attrs).keydown(function(e) {
	var input = $(this);

	// element creation event (on Enter)
	if (e.which == 13) {
	var name = input.attr('name').replace(/\[\]$/, ''),
	dt = (new Date()).getTime(),
	elem = smart_field_row('', name, dt, size);

	input.parent().after(elem);
	$('input', elem).focus();
	}
	// backspace or delete: remove input, focus previous one
	else if ((e.which == 8 \|\| e.which == 46) && input.val() == '') {

	var parent = input.parent(), siblings = parent.parent().children();

	if (siblings.length > 1) {
	if (parent.prev().length)
	parent.prev().children('input').focus();
	else
	parent.next().children('input').focus();

	parent.remove();
	return false;
	}
	}
	});

	// element deletion event
	$('span[class="reset"]', elem).click(function() {
	var span = $(this.parentNode);

	if (span.parent().children().length > 1)
	span.remove();
	else
	$('input', span).val('').focus();
	});

	return elem;
	}

	// Reset and fill the smart list input with new data
	function smart_field_reset(field, data)
	{
	if (window.UI && UI.smart_field_reset)
	return UI.smart_field_reset(field, data);

	var id = field.id + '_list',
	list = data.length ? data : [''];
	area = $('#' + id);

	area.empty();

	// add input rows
	$.each(list, function(i, v) {
	area.append(smart_field_row(v, field.name, i, $(field).data('size')));
	});
	}

	// Register onmouse(leave/enter) events for tips on specified form element
	rcube_webmail.prototype.managesieve_tip_register = function(tips)
	{
	if (window.UI && UI.form_errors)
	return UI.form_errors(tips);

	var n, framed = parent.rcmail,
	tip = framed ? parent.rcmail.env.ms_tip_layer : rcmail.env.ms_tip_layer;

	for (n in tips) {
	$('#'+tips[n][0])
	.data('tip-class', tips[n][1])
	.data('tip-msg', tips[n][2])
	.mouseleave(function(e) { tip.hide(); })
	.mouseenter(function(e) {
	var elem = $(this),
	offset = elem.offset(),
	left = offset.left,
	top = offset.top - 12,
	minwidth = elem.width(),
	span = $('<span>').addClass(elem.data('tip-class')).text(elem.data('tip-msg'));

	if (framed) {
	offset = $((rcmail.env.task == 'mail' ? '#sievefilterform > iframe' : '#filter-box'), parent.document).offset();
	top += offset.top;
	left += offset.left;
	}

	tip.html('').append(span);
	top -= tip.height();

	tip.css({left: left, top: top, minWidth: (minwidth-2) + 'px'}).show();
	});
	}
	};

	// format time string
	function sieve_formattime(hour, minutes)
	{
	var i, c, h, time = '', format = rcmail.env.time_format \|\| 'H:i';

	for (i=0; i<format.length; i++) {
	c = format.charAt(i);
	switch (c) {
	case 'a': time += hour >= 12 ? 'pm' : 'am'; break;
	case 'A': time += hour >= 12 ? 'PM' : 'AM'; break;
	case 'g':
	case 'h':
	h = hour == 0 ? 12 : hour > 12 ? hour - 12 : hour;
	time += (c == 'h' && hour < 10 ? '0' : '') + hour;
	break;
	case 'G': time += hour; break;
	case 'H': time += (hour < 10 ? '0' : '') + hour; break;
	case 'i': time += (minutes < 10 ? '0' : '') + minutes; break;
	case 's': time += '00';
	default: time += c;
	}
	}

	return time;
	}

	function sieve_form_init()
	{
	var form = rcmail.gui_objects.sieveform;

	// resize dialog window
	if (rcmail.env.action == 'plugin.managesieve' && rcmail.env.task == 'mail') {
	parent.rcmail.managesieve_dialog_resize(form);
	}

	- $('input[type="text"]:first', form).focus();
	+ $('input[type="text"]', form).first().focus();

	// initialize smart list inputs
	$('textarea[data-type="list"]', form).each(function() {
	smart_field_init(this);
	});

	// initialize rules form(s)
	$('[name^="_header"]', form).each(function() {
	if (/([0-9]+)$/.test(this.id)) {
	rule_header_select(RegExp.$1);
	}
	});

	// enable date pickers on date fields
	if ($.datepicker && rcmail.env.date_format) {
	$.datepicker.setDefaults({
	dateFormat: rcmail.env.date_format,
	changeMonth: true,
	showOtherMonths: true,
	selectOtherMonths: true,
	onSelect: function(dateText) { $(this).focus().val(dateText); }
	});
	$('input.datepicker').datepicker();
	}

	// configure drop-down menu on time input fields based on jquery UI autocomplete
	$('#vacation_timefrom, #vacation_timeto')
	.attr('autocomplete', "off")
	.autocomplete({
	delay: 100,
	minLength: 1,
	source: function(p, callback) {
	var h, result = [];
	for (h = 0; h < 24; h++)
	result.push(sieve_formattime(h, 0));
	result.push(sieve_formattime(23, 59));

	return callback(result);
	},
	open: function(event, ui) {
	// scroll to current time
	var $this = $(this), val = $this.val(),
	widget = $this.autocomplete('widget').css('width', '10em'),
	menu = $this.data('ui-autocomplete').menu;

	if (val && val.length)
	widget.children().each(function() {
	var li = $(this);
	if (li.text().indexOf(val) == 0)
	menu._scrollIntoView(li);
	});
	},
	select: function(event, ui) {
	$(this).val(ui.item.value);
	return false;
	}
	})
	.click(function() { // show drop-down upon clicks
	$(this).autocomplete('search', $(this).val() \|\| ' ');
	})

	// display advanced controls when contain errors
	$('input.error').each(function() {
	if (String(this.id).match(/([0-9]+)$/)) {
	$('#ruleadv' + RegExp.$1 + '.show').click();
	}
	});
	}

	/*********************************************************/
	/******* RAW editor methods *******/
	/*********************************************************/

	var cmeditor;

	function cmCreateErrorElem(msg)
	{
	var marker = document.createElement("div");
	marker.style.color = "#822";
	marker.innerHTML = "●";
	marker.title = msg;

	return marker;
	}

	function cmScrollToError()
	{
	var line = $('.CodeMirror-lines .line-error'),
	scroll = $('.CodeMirror-scroll'),
	h = line.parent();

	scroll.scrollTop(line.offset().top - scroll.offset().top - Math.round(scroll.height()/2));
	}

	function sieve_raw_editor_init()
	{
	var textArea = document.getElementById('rawfiltersettxt');
	if (textArea && !cmeditor) {
	cmeditor = CodeMirror.fromTextArea(textArea, {
	mode: 'sieve',
	lineNumbers: true,
	gutters: ["CodeMirror-linenumbers", "errorGutter"],
	styleActiveLine: true
	});

	// fetching errors from environment and setting the line background
	// and a gutter element with the error message accordingly
	$.each(rcmail.env.sieve_errors \|\| [], function(i, err) {
	var lineNo = Number(err.line) - 1;
	cmeditor.addLineClass(lineNo, 'background', 'line-error');
	cmeditor.setGutterMarker(lineNo, 'errorGutter', cmCreateErrorElem(err.msg));
	if (!i) cmScrollToError();
	});
	}
	}


	/*********************************************************/
	/******* Mail UI methods *******/
	/*********************************************************/

	rcube_webmail.prototype.managesieve_create = function(force)
	{
	if (!force && this.env.action != 'show') {
	var uid = this.message_list.get_single_selection(),
	lock = this.set_busy(true, 'loading');

	this.http_post('plugin.managesieve-action', {_uid: uid}, lock);
	return;
	}

	if (!this.env.sieve_headers \|\| !this.env.sieve_headers.length)
	return;

	var i, buttons = {},
	title = this.get_label('managesieve.newfilter'),
	dialog = $('<div id="sievefilterform" class="propform"></div>'),
	props = {minWidth: 600, minHeight: 250, height: 300};


	// build dialog window content
	dialog.append($('<fieldset>')
	.append($('<legend>').text(this.get_label('managesieve.usedata')))
	.append($('<ul class="proplist">'))
	);

	$.each(this.env.sieve_headers, function(i, v) {
	var attr = {type: 'checkbox', name: 'headers[]', id: 'sievehdr' + i, value: i, checked: true},
	label = rcmail.env.sieve_headers[i][0] + ': ' + rcmail.env.sieve_headers[i][1];

	$('ul', dialog).append($('<li>')
	.append($('<input>').attr(attr))
	.append($('<label>').attr('for', 'sievehdr' + i).text(label))
	);
	});

	// [Next Step] button action
	buttons[this.get_label('managesieve.nextstep')] = function () {
	// check if there's at least one checkbox checked
	var hdrs = $('input[name="headers[]"]:checked', dialog);
	if (!hdrs.length) {
	rcmail.alert_dialog(rcmail.get_label('managesieve.nodata'));
	return;
	}

	// build frame URL
	var url = rcmail.get_task_url('mail');
	url = rcmail.add_url(url, '_action', 'plugin.managesieve');
	url = rcmail.add_url(url, '_framed', 1);

	hdrs.map(function() {
	var val = rcmail.env.sieve_headers[this.value];
	url = rcmail.add_url(url, 'r['+this.value+']', val[0]+':'+val[1]);
	});

	// load form in the iframe
	var buttons = {}, iframe = $('<iframe>').attr({src: url, frameborder: 0});

	// Change [Next Step] button with [Save] button
	buttons[rcmail.get_label('save')] = function() {
	var win = $('iframe', dialog).get(0).contentWindow;
	win.rcmail.managesieve_save();
	};
	buttons[rcmail.get_label('cancel')] = function() { $(this).dialog('destroy'); };

	dialog.dialog('destroy');

	rcmail.env.managesieve_dialog = dialog = rcmail.show_popup_dialog(
	iframe, title, buttons, $.extend(props, {button_classes: ['mainaction save', 'cancel']})
	);
	};

	buttons[this.get_label('cancel')] = function() { $(this).dialog('destroy'); };

	this.env.managesieve_dialog = dialog = this.show_popup_dialog(
	dialog, title, buttons, $.extend(props, {button_classes: ['mainaction next', 'cancel']})
	);
	}

	rcube_webmail.prototype.managesieve_dialog_close = function()
	{
	this.env.managesieve_dialog.dialog('destroy');
	}

	rcube_webmail.prototype.managesieve_dialog_resize = function(o)
	{
	var dialog = this.env.managesieve_dialog,
	win = $(window), form = $(o);
	- width = $('fieldset:first', o).width(), // fieldset width is more appropriate here
	+ width = $('fieldset', o).first().width(), // fieldset width is more appropriate here
	height = form.height(),
	w = win.width(), h = win.height();

	if (height < 100)
	return;

	dialog.dialog('option', { height: Math.min(h-20, height+120), width: Math.min(w-20, width+65) });
	}
	diff --git a/plugins/password/password.js b/plugins/password/password.js
	index f5080e9af..78389f088 100644
	--- a/plugins/password/password.js
	+++ b/plugins/password/password.js
	@@ -1,62 +1,62 @@
	/**
	* Password plugin script
	*
	* @licstart The following is the entire license notice for the
	* JavaScript code in this file.
	*
	* Copyright (c) 2012-2014, The Roundcube Dev Team
	*
	* The JavaScript code in this page is free software: you can redistribute it
	* and/or modify it under the terms of the GNU General Public License
	* as published by the Free Software Foundation, either version 3 of
	* the License, or (at your option) any later version.
	*
	* @licend The above is the entire license notice
	* for the JavaScript code in this file.
	*/

	window.rcmail && rcmail.addEventListener('init', function(evt) {
	if (rcmail.env.password_disabled) {
	$('#password-form input').prop('disabled', true);
	// reload page after ca. 3 minutes
	rcmail.reload(3 * 60 * 1000 - 2000);
	return;
	}

	// register command handler
	rcmail.register_command('plugin.password-save', function() {
	var input_curpasswd = rcube_find_object('_curpasswd'),
	input_newpasswd = rcube_find_object('_newpasswd'),
	input_confpasswd = rcube_find_object('_confpasswd');

	if (input_curpasswd && input_curpasswd.value == '') {
	rcmail.alert_dialog(rcmail.get_label('nocurpassword', 'password'), function() {
	input_curpasswd.focus();
	return true;
	});
	}
	else if (input_newpasswd && input_newpasswd.value == '') {
	rcmail.alert_dialog(rcmail.get_label('nopassword', 'password'), function() {
	input_newpasswd.focus();
	return true;
	});
	}
	else if (input_confpasswd && input_confpasswd.value == '') {
	rcmail.alert_dialog(rcmail.get_label('nopassword', 'password'), function() {
	input_confpasswd.focus();
	return true;
	});
	}
	else if (input_newpasswd && input_confpasswd && input_newpasswd.value != input_confpasswd.value) {
	rcmail.alert_dialog(rcmail.get_label('passwordinconsistency', 'password'), function() {
	input_newpasswd.focus();
	return true;
	});
	}
	else {
	rcmail.gui_objects.passform.submit();
	}
	}, true);

	- $('input:not(:hidden):first').focus();
	+ $('input:not(:hidden)').first().focus();
	});
	diff --git a/program/js/app.js b/program/js/app.js
	index 7cb799636..7c12fe461 100644
	--- a/program/js/app.js
	+++ b/program/js/app.js
	@@ -1,10083 +1,10083 @@
	/**
	* Roundcube Webmail Client Script
	*
	* This file is part of the Roundcube Webmail client
	*
	* @licstart The following is the entire license notice for the
	* JavaScript code in this file.
	*
	* Copyright (C) 2005-2015, The Roundcube Dev Team
	* Copyright (C) 2011-2015, Kolab Systems AG
	*
	* The JavaScript code in this page is free software: you can
	* redistribute it and/or modify it under the terms of the GNU
	* General Public License (GNU GPL) as published by the Free Software
	* Foundation, either version 3 of the License, or (at your option)
	* any later version. The code is distributed WITHOUT ANY WARRANTY;
	* without even the implied warranty of MERCHANTABILITY or FITNESS
	* FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
	*
	* As additional permission under GNU GPL version 3 section 7, you
	* may distribute non-source (e.g., minimized or compacted) forms of
	* that code without the copy of the GNU GPL normally required by
	* section 4, provided you include this license notice and a URL
	* through which recipients can access the Corresponding Source.
	*
	* @licend The above is the entire license notice
	* for the JavaScript code in this file.
	*
	* @author Thomas Bruederli <roundcube@gmail.com>
	* @author Aleksander 'A.L.E.C' Machniak <alec@alec.pl>
	* @author Charles McNulty <charles@charlesmcnulty.com>
	*
	* @requires jquery.js, common.js, list.js
	*/

	function rcube_webmail()
	{
	this.labels = {};
	this.buttons = {};
	this.buttons_sel = {};
	this.gui_objects = {};
	this.gui_containers = {};
	this.commands = {};
	this.command_handlers = {};
	this.onloads = [];
	this.messages = {};
	this.group2expand = {};
	this.http_request_jobs = {};
	this.menu_stack = [];
	this.menu_buttons = {};
	this.entity_selectors = [];
	this.image_style = {};
	this.uploads = {};

	// webmail client settings
	this.dblclick_time = 500;
	this.message_time = 5000;
	this.preview_delay_select = 400;
	this.preview_delay_click = 60;
	this.identifier_expr = /[^0-9a-z_-]/gi;

	// environment defaults
	this.env = {
	request_timeout: 180, // seconds
	draft_autosave: 0, // seconds
	comm_path: './',
	recipients_separator: ',', // @deprecated
	recipients_delimiter: ', ', // @deprecated
	popup_width: 1150,
	popup_width_small: 900,
	thread_padding: '15px'
	};

	// create protected reference to myself
	this.ref = 'rcmail';
	var ref = this;

	// set jQuery ajax options
	$.ajaxSetup({
	cache: false,
	timeout: this.env.request_timeout * 1000,
	error: function(request, status, err){ ref.http_error(request, status, err); },
	beforeSend: function(xmlhttp){ xmlhttp.setRequestHeader('X-Roundcube-Request', ref.env.request_token); }
	});

	// unload fix
	$(window).on('beforeunload', function() { ref.unload = true; });

	// set environment variable(s)
	this.set_env = function(p, value)
	{
	if (p != null && typeof p === 'object' && !value)
	for (var n in p)
	this.env[n] = p[n];
	else
	this.env[p] = value;
	};

	// add a localized label to the client environment
	this.add_label = function(p, value)
	{
	if (typeof p == 'string')
	this.labels[p] = value;
	else if (typeof p == 'object')
	$.extend(this.labels, p);
	};

	// add a button to the button list
	this.register_button = function(command, id, type, act, sel, over)
	{
	var button_prop = {id:id, type:type};

	if (act) button_prop.act = act;
	if (sel) button_prop.sel = sel;
	if (over) button_prop.over = over;

	if (!this.buttons[command])
	this.buttons[command] = [];

	this.buttons[command].push(button_prop);

	if (this.loaded) {
	this.init_button(command, button_prop);
	this.set_button(command, (this.commands[command] ? 'act' : 'pas'));
	}
	};

	// register a button with popup menu, to set its state according to the state of all commands in the menu
	this.register_menu_button = function(button, menu_id)
	{
	if (this.menu_buttons[menu_id]) {
	this.menu_buttons[menu_id][0].push(button);
	}
	else {
	var commands = [];
	$('#' + menu_id).find('a').each(function() {
	var command, link = $(this), onclick = link.attr('onclick');

	if (onclick && String(onclick).match(/rcmail\.command\(\'([^']+)/))
	command = RegExp.$1;
	else
	command = function() { return link.is('.active'); };

	commands.push(command);
	});

	if (commands.length)
	this.menu_buttons[menu_id] = [[button], commands];
	}

	this.set_menu_buttons();
	};

	// set state of a menu button according to state of all menu actions
	this.set_menu_buttons = function()
	{
	// Use timeouts to not block and set menu button states only once
	clearTimeout(this.menu_buttons_timeout);
	this.menu_buttons_timeout = setTimeout(function() {
	$.each(ref.menu_buttons, function() {
	var disabled = true;
	$.each(this[1], function() {
	var is_func = typeof(this) == 'function';
	if ((is_func && this()) \|\| (!is_func && ref.commands[this])) {
	return disabled = false;
	}
	});

	$(this[0]).add($(this[0]).parent('.dropbutton'))
	.addClass(disabled ? 'disabled' : 'active')
	.removeClass(disabled ? 'active' : 'disabled');
	});
	}, 50);
	};

	// register a specific gui object
	this.gui_object = function(name, id)
	{
	this.gui_objects[name] = this.loaded ? rcube_find_object(id) : id;
	};

	// register a container object
	this.gui_container = function(name, id)
	{
	this.gui_containers[name] = id;
	};

	// add a GUI element (html node) to a specified container
	this.add_element = function(elm, container)
	{
	if (this.gui_containers[container] && this.gui_containers[container].jquery)
	this.gui_containers[container].append(elm);
	};

	// register an external handler for a certain command
	this.register_command = function(command, callback, enable)
	{
	this.command_handlers[command] = callback;

	if (enable)
	this.enable_command(command, true);
	};

	// execute the given script on load
	this.add_onload = function(f)
	{
	this.onloads.push(f);
	};

	// initialize webmail client
	this.init = function()
	{
	var n;
	this.task = this.env.task;

	// check browser capabilities (never use version checks here)
	if (this.env.server_error != 409 && (!bw.dom \|\| !bw.xmlhttp_test())) {
	this.goto_url('error', '_code=0x199');
	return;
	}

	if (!this.env.blankpage)
	this.env.blankpage = 'about:blank';

	// find all registered gui containers
	for (n in this.gui_containers)
	this.gui_containers[n] = $('#'+this.gui_containers[n]);

	// find all registered gui objects
	for (n in this.gui_objects)
	this.gui_objects[n] = rcube_find_object(this.gui_objects[n]);

	// init registered buttons
	this.init_buttons();

	// tell parent window that this frame is loaded
	if (this.is_framed()) {
	parent.rcmail.set_busy(false, null, parent.rcmail.env.frame_lock);
	parent.rcmail.env.frame_lock = null;
	}

	// enable general commands
	this.enable_command('close', 'logout', 'mail', 'addressbook', 'settings', 'save-pref',
	'compose', 'undo', 'about', 'switch-task', 'menu-open', 'menu-close', 'menu-save', true);

	// set active task button
	this.set_button(this.task, 'sel');

	if (this.env.permaurl)
	this.enable_command('permaurl', 'extwin', true);

	switch (this.task) {

	case 'mail':
	// enable mail commands
	this.enable_command('list', 'checkmail', 'add-contact', 'search', 'reset-search', 'collapse-folder', 'import-messages', true);

	if (this.gui_objects.messagelist) {
	this.env.widescreen_list_template = [
	{className: 'threads', cells: ['threads']},
	{className: 'subject', cells: ['fromto', 'date', 'status', 'subject']},
	{className: 'flags', cells: ['flag', 'attachment']}
	];

	this.message_list = new rcube_list_widget(this.gui_objects.messagelist, {
	multiselect:true, multiexpand:true, draggable:true, keyboard:true,
	column_movable:this.env.col_movable, dblclick_time:this.dblclick_time
	});
	this.message_list
	.addEventListener('initrow', function(o) { ref.init_message_row(o); })
	.addEventListener('dblclick', function(o) { ref.msglist_dbl_click(o); })
	.addEventListener('keypress', function(o) { ref.msglist_keypress(o); })
	.addEventListener('select', function(o) { ref.msglist_select(o); })
	.addEventListener('dragstart', function(o) { ref.drag_start(o); })
	.addEventListener('dragmove', function(e) { ref.drag_move(e); })
	.addEventListener('dragend', function(e) { ref.drag_end(e); })
	.addEventListener('expandcollapse', function(o) { ref.msglist_expand(o); })
	.addEventListener('column_replace', function(o) { ref.msglist_set_coltypes(o); })
	.init();

	// TODO: this should go into the list-widget code
	$(this.message_list.thead).on('click', 'a.sortcol', function(e){
	return ref.command('sort', $(this).attr('rel'), this);
	});

	this.enable_command('toggle_status', 'toggle_flag', 'sort', true);
	this.enable_command('set-listmode', this.env.threads && !this.is_multifolder_listing());

	// load messages
	var searchfilter = $(this.gui_objects.search_filter).val();
	if (searchfilter && searchfilter != 'ALL')
	this.filter_mailbox(searchfilter);
	else
	this.command('list');

	$(this.gui_objects.qsearchbox).val(this.env.search_text).focusin(function() { ref.message_list.blur(); });
	}

	this.set_button_titles();

	this.env.message_commands = ['show', 'reply', 'reply-all', 'reply-list',
	'move', 'copy', 'delete', 'open', 'mark', 'edit', 'viewsource', 'bounce',
	'print', 'load-attachment', 'download-attachment', 'show-headers', 'hide-headers', 'download',
	'forward', 'forward-inline', 'forward-attachment', 'change-format'];

	if (this.env.action == 'show' \|\| this.env.action == 'preview') {
	this.enable_command(this.env.message_commands, this.env.uid);
	this.enable_command('reply-list', this.env.list_post);

	if (this.env.action == 'show') {
	this.http_request('pagenav', {_uid: this.env.uid, _mbox: this.env.mailbox, _search: this.env.search_request},
	this.display_message('', 'loading'));
	}

	if (this.env.mail_read_time > 0)
	setTimeout(function() {
	ref.http_post('mark', {_uid: ref.env.uid, _flag: 'read', _mbox: ref.env.mailbox, _quiet: 1});
	}, this.env.mail_read_time * 1000);

	if (this.env.blockedobjects) {
	$(this.gui_objects.remoteobjectsmsg).show();
	this.enable_command('load-remote', true);
	}

	// make preview/message frame visible
	if (this.env.action == 'preview' && this.is_framed()) {
	this.enable_command('compose', 'add-contact', false);
	parent.rcmail.show_contentframe(true);
	}

	if ($.inArray('flagged', this.env.message_flags) >= 0) {
	$(document.body).addClass('status-flagged');
	}

	// initialize drag-n-drop on attachments, so they can e.g.
	// be dropped into mail compose attachments in another window
	if (this.gui_objects.attachments)
	$('li > a', this.gui_objects.attachments).not('.drop').on('dragstart', function(e) {
	var n, href = this.href, dt = e.originalEvent.dataTransfer;
	if (dt) {
	// inject username to the uri
	href = href.replace(/^https?:\/\//, function(m) { return m + urlencode(ref.env.username) + '@'});
	// cleanup the node to get filename without the size test
	n = $(this).clone();
	n.children().remove();

	dt.setData('roundcube-uri', href);
	dt.setData('roundcube-name', $.trim(n.text()));
	}
	});
	}
	else if (this.env.action == 'compose') {
	this.env.address_group_stack = [];
	this.env.compose_commands = ['send-attachment', 'remove-attachment', 'send', 'cancel',
	'toggle-editor', 'list-addresses', 'pushgroup', 'search', 'reset-search', 'extwin',
	'insert-response', 'save-response', 'menu-open', 'menu-close', 'load-attachment',
	'download-attachment', 'open-attachment', 'rename-attachment'];

	if (this.env.drafts_mailbox)
	this.env.compose_commands.push('savedraft')

	this.enable_command(this.env.compose_commands, true);

	// add more commands (not enabled)
	$.merge(this.env.compose_commands, ['add-recipient', 'firstpage', 'previouspage', 'nextpage', 'lastpage']);

	if (window.googie) {
	this.env.editor_config.spellchecker = googie;
	this.env.editor_config.spellcheck_observer = function(s) { ref.spellcheck_state(); };

	this.env.compose_commands.push('spellcheck')
	this.enable_command('spellcheck', true);
	}

	// initialize HTML editor
	this.editor_init(this.env.editor_config, this.env.composebody);

	// init canned response functions
	if (this.gui_objects.responseslist) {
	$('a.insertresponse', this.gui_objects.responseslist)
	.attr('unselectable', 'on')
	.mousedown(function(e) { return rcube_event.cancel(e); })
	.on('mouseup keypress', function(e) {
	if (e.type == 'mouseup' \|\| rcube_event.get_keycode(e) == 13) {
	ref.command('insert-response', $(this).attr('rel'));
	$(document.body).trigger('mouseup'); // hides the menu
	return rcube_event.cancel(e);
	}
	});

	// avoid textarea loosing focus when hitting the save-response button/link
	$.each(this.buttons['save-response'] \|\| [], function (i, v) {
	$('#' + v.id).mousedown(function(e){ return rcube_event.cancel(e); })
	});
	}

	// init message compose form
	this.init_messageform();
	}
	else if (this.env.action == 'bounce') {
	this.init_messageform_inputs();
	this.env.compose_commands = [];
	}
	else if (this.env.action == 'get') {
	this.enable_command('download', true);
	this.enable_command('image-scale', 'image-rotate', !!/^image\//.test(this.env.mimetype));

	// Mozilla's PDF.js viewer does not allow printing from host page (#5125)
	// to minimize user confusion we disable the Print button
	if (bw.mz && this.env.mimetype == 'application/pdf') {
	n = 0; // there will be two onload events, first for the preload page
	$(this.gui_objects.messagepartframe).on('load', function() {
	if (n++) try { if (this.contentWindow.document) ref.enable_command('print', true); }
	catch (e) {/* ignore */}
	});
	}
	else
	this.enable_command('print', true);

	if (this.env.is_message) {
	this.enable_command('reply', 'reply-all', 'edit', 'viewsource',
	'forward', 'forward-inline', 'forward-attachment', 'bounce', true);
	if (this.env.list_post)
	this.enable_command('reply-list', true);
	}

	// center and scale the image in preview frame
	if (this.env.mimetype.startsWith('image/'))
	$(this.gui_objects.messagepartframe).on('load', function() {
	var css = 'img { max-width:100%; max-height:100%; } ' // scale
	+ 'body { display:flex; align-items:center; justify-content:center; height:100%; margin:0; }'; // align

	$(this).contents().find('head').append('<style type="text/css">'+ css + '</style>');
	});
	}
	// show printing dialog
	else if (this.env.action == 'print' && this.env.uid
	&& !this.env.is_pgp_content && !this.env.pgp_mime_part
	) {
	this.print_dialog();
	}

	// get unread count for each mailbox
	if (this.gui_objects.mailboxlist) {
	this.env.unread_counts = {};
	this.gui_objects.folderlist = this.gui_objects.mailboxlist;
	this.http_request('getunread', {_page: this.env.current_page});
	}

	// init address book widget
	if (this.gui_objects.contactslist) {
	this.contact_list = new rcube_list_widget(this.gui_objects.contactslist,
	{ multiselect:true, draggable:false, keyboard:true });
	this.contact_list
	.addEventListener('initrow', function(o) { ref.triggerEvent('insertrow', { cid:o.uid, row:o }); })
	.addEventListener('select', function(o) { ref.compose_recipient_select(o); })
	.addEventListener('dblclick', function(o) { ref.compose_add_recipient(); })
	.addEventListener('keypress', function(o) {
	if (o.key_pressed == o.ENTER_KEY) {
	if (!ref.compose_add_recipient()) {
	// execute link action on <enter> if not a recipient entry
	if (o.last_selected && String(o.last_selected).charAt(0) == 'G') {
	$(o.rows[o.last_selected].obj).find('a').first().click();
	}
	}
	}
	})
	.init();

	// remember last focused address field
	$('#_to,#_cc,#_bcc').focus(function() { ref.env.focused_field = this; });
	}

	if (this.gui_objects.addressbookslist) {
	this.gui_objects.folderlist = this.gui_objects.addressbookslist;
	this.enable_command('list-addresses', true);
	}

	// ask user to send MDN
	if (this.env.mdn_request && this.env.uid) {
	var postact = 'sendmdn',
	postdata = {_uid: this.env.uid, _mbox: this.env.mailbox};
	if (!confirm(this.get_label('mdnrequest'))) {
	postdata._flag = 'mdnsent';
	postact = 'mark';
	}
	this.http_post(postact, postdata);
	}

	this.check_mailvelope(this.env.action);

	// detect browser capabilities
	if (!this.is_framed() && !this.env.extwin)
	this.browser_capabilities_check();

	break;

	case 'addressbook':
	this.env.address_group_stack = [];

	if (this.gui_objects.folderlist)
	this.env.contactfolders = $.extend($.extend({}, this.env.address_sources), this.env.contactgroups);

	this.enable_command('add', 'import', this.env.writable_source);
	this.enable_command('list', 'listgroup', 'pushgroup', 'popgroup', 'listsearch', 'search', 'reset-search', 'advanced-search', true);

	if (this.gui_objects.contactslist) {
	this.contact_list = new rcube_list_widget(this.gui_objects.contactslist,
	{multiselect:true, draggable:this.gui_objects.folderlist?true:false, keyboard:true});
	this.contact_list
	.addEventListener('initrow', function(o) { ref.triggerEvent('insertrow', { cid:o.uid, row:o }); })
	.addEventListener('keypress', function(o) { ref.contactlist_keypress(o); })
	.addEventListener('select', function(o) { ref.contactlist_select(o); })
	.addEventListener('dragstart', function(o) { ref.drag_start(o); })
	.addEventListener('dragmove', function(e) { ref.drag_move(e); })
	.addEventListener('dragend', function(e) { ref.drag_end(e); })
	.init();

	$(this.gui_objects.qsearchbox).focusin(function() { ref.contact_list.blur(); });

	this.update_group_commands();
	this.command('list');
	}

	if (this.gui_objects.savedsearchlist) {
	this.savedsearchlist = new rcube_treelist_widget(this.gui_objects.savedsearchlist, {
	id_prefix: 'rcmli',
	id_encode: this.html_identifier_encode,
	id_decode: this.html_identifier_decode
	});

	this.savedsearchlist.addEventListener('select', function(node) {
	ref.triggerEvent('selectfolder', { folder:node.id, prefix:'rcmli' }); });
	}

	this.set_page_buttons();

	if (this.env.cid) {
	this.enable_command('show', 'edit', 'qrcode', true);
	// register handlers for group assignment via checkboxes
	if (this.gui_objects.editform) {
	$('input.groupmember').change(function() {
	ref.group_member_change(this.checked ? 'add' : 'del', ref.env.cid, ref.env.source, this.value);
	});
	}
	}

	if (this.gui_objects.editform) {
	this.enable_command('save', true);
	if (this.env.action == 'add' \|\| this.env.action == 'edit' \|\| this.env.action == 'search')
	this.init_contact_form();
	}
	else if (this.env.action == 'print') {
	this.print_dialog();
	}

	break;

	case 'settings':
	this.enable_command('show', 'save', true);

	if (this.env.action == 'identities') {
	this.enable_command('add', this.env.identities_level < 2);
	}
	else if (this.env.action == 'edit-identity' \|\| this.env.action == 'add-identity') {
	this.enable_command('save', 'edit', 'toggle-editor', true);
	this.enable_command('delete', this.env.identities_level < 2);

	// initialize HTML editor
	this.editor_init(this.env.editor_config, 'rcmfd_signature');

	this.check_mailvelope(this.env.action);
	}
	else if (this.env.action == 'folders') {
	this.enable_command('subscribe', 'unsubscribe', 'create-folder', 'rename-folder', true);
	}
	else if (this.env.action == 'edit-folder' && this.gui_objects.editform) {
	this.enable_command('save', 'folder-size', true);
	parent.rcmail.env.exists = this.env.messagecount;
	parent.rcmail.enable_command('purge', this.env.messagecount);
	}
	else if (this.env.action == 'responses') {
	this.enable_command('add', true);
	}

	if (this.gui_objects.identitieslist) {
	this.identity_list = new rcube_list_widget(this.gui_objects.identitieslist,
	{multiselect:false, draggable:false, keyboard:true});
	this.identity_list
	.addEventListener('select', function(o) { ref.identity_select(o); })
	.addEventListener('keypress', function(o) {
	if (o.key_pressed == o.ENTER_KEY) {
	ref.identity_select(o);
	}
	})
	.init()
	.focus();
	}
	else if (this.gui_objects.sectionslist) {
	this.sections_list = new rcube_list_widget(this.gui_objects.sectionslist, {multiselect:false, draggable:false, keyboard:true});
	this.sections_list
	.addEventListener('select', function(o) { ref.section_select(o); })
	.addEventListener('keypress', function(o) { if (o.key_pressed == o.ENTER_KEY) ref.section_select(o); })
	.init()
	.focus();
	}
	else if (this.gui_objects.subscriptionlist) {
	this.init_subscription_list();
	}
	else if (this.gui_objects.responseslist) {
	this.responses_list = new rcube_list_widget(this.gui_objects.responseslist, {multiselect:false, draggable:false, keyboard:true});
	this.responses_list
	.addEventListener('select', function(o) { ref.response_select(o); })
	.init()
	.focus();
	}

	break;

	case 'login':
	var tz, tz_name,
	input_user = $('#rcmloginuser'),
	input_tz = $('#rcmlogintz');

	input_user.keyup(function(e) { return ref.login_user_keyup(e); });

	if (input_user.val() == '')
	input_user.focus();
	else
	$('#rcmloginpwd').focus();

	// detect client timezone
	if (window.jstz && (tz = jstz.determine()))
	tz_name = tz.name();

	input_tz.val(tz_name ? tz_name : (new Date().getStdTimezoneOffset() / -60));

	// display 'loading' message on form submit, lock submit button
	$('form').submit(function () {
	$('[type=submit]', this).prop('disabled', true);
	ref.clear_messages();
	ref.display_message('', 'loading');
	});

	break;
	}

	// select first input field in an edit form
	if (this.gui_objects.editform)
	$("input,select,textarea", this.gui_objects.editform)
	.not(':hidden').not(':disabled').first().select().focus();

	// prevent from form submit with Enter key in file input fields
	if (bw.ie)
	$('input[type=file]').keydown(function(e) { if (e.keyCode == '13') e.preventDefault(); });

	// flag object as complete
	this.loaded = true;
	this.env.lastrefresh = new Date();

	// show message
	if (this.pending_message)
	this.display_message.apply(this, this.pending_message);

	// init treelist widget
	if (this.gui_objects.folderlist && window.rcube_treelist_widget
	// some plugins may load rcube_treelist_widget and there's one case
	// when this will cause problems - addressbook widget in compose,
	// which already has been initialized using rcube_list_widget
	&& this.gui_objects.folderlist != this.gui_objects.addressbookslist
	) {
	this.treelist = new rcube_treelist_widget(this.gui_objects.folderlist, {
	selectable: true,
	id_prefix: 'rcmli',
	parent_focus: true,
	id_encode: this.html_identifier_encode,
	id_decode: this.html_identifier_decode,
	check_droptarget: function(node) { return !node.virtual && ref.check_droptarget(node.id) }
	});

	this.treelist
	.addEventListener('collapse', function(node) { ref.folder_collapsed(node) })
	.addEventListener('expand', function(node) { ref.folder_collapsed(node) })
	.addEventListener('beforeselect', function(node) { return !ref.busy; })
	.addEventListener('select', function(node) {
	ref.triggerEvent('selectfolder', { folder:node.id, prefix:'rcmli' });
	ref.mark_all_read_state();
	});
	}

	// activate html5 file drop feature (if browser supports it and if configured)
	if (this.gui_objects.filedrop && this.env.filedrop && window.FormData) {
	$(document.body).on('dragover dragleave drop', function(e) { return ref.document_drag_hover(e, e.type == 'dragover'); });
	$(this.gui_objects.filedrop).addClass('droptarget')
	.on('dragover dragleave', function(e) { return ref.file_drag_hover(e, e.type == 'dragover'); })
	.get(0).addEventListener('drop', function(e) { return ref.file_dropped(e); }, false);
	}

	// catch document (and iframe) mouse clicks
	var body_mouseup = function(e) { return ref.doc_mouse_up(e); };
	$(document.body)
	.mouseup(body_mouseup)
	.keydown(function(e) { return ref.doc_keypress(e); });

	rcube_webmail.set_iframe_events({mouseup: body_mouseup});

	// trigger init event hook
	this.triggerEvent('init', { task:this.task, action:this.env.action });

	// execute all foreign onload scripts
	// @deprecated
	for (n in this.onloads) {
	if (typeof this.onloads[n] === 'string')
	eval(this.onloads[n]);
	else if (typeof this.onloads[n] === 'function')
	this.onloads[n]();
	}

	// register menu buttons
	$('[data-popup]').each(function() { ref.register_menu_button(this, $(this).data('popup')); });

	// start keep-alive and refresh intervals
	this.start_refresh();
	this.start_keepalive();
	};

	this.log = function(msg)
	{
	if (this.env.devel_mode && window.console && console.log)
	console.log(msg);
	};

	/*********************************************************/
	/******* client command interface *******/
	/*********************************************************/

	// execute a specific command on the web client
	this.command = function(command, props, obj, event)
	{
	var ret, uid, cid, url, flag, aborted = false;

	if (obj && obj.blur && !(event && rcube_event.is_keyboard(event)))
	obj.blur();

	// do nothing if interface is locked by another command
	// with exception for searching reset and menu
	if (this.busy && !(command == 'reset-search' && this.last_command == 'search') && !command.match(/^menu-/))
	return false;

	// let the browser handle this click (shift/ctrl usually opens the link in a new window/tab)
	if ((obj && obj.href && String(obj.href).indexOf('#') < 0) && rcube_event.get_modifier(event)) {
	return true;
	}

	// command not supported or allowed
	if (!this.commands[command]) {
	// pass command to parent window
	if (this.is_framed())
	parent.rcmail.command(command, props);

	return false;
	}

	// check input before leaving compose step
	if (this.task == 'mail' && this.env.action == 'compose' && !this.env.server_error && command != 'save-pref'
	&& $.inArray(command, this.env.compose_commands) < 0 && !this.compose_skip_unsavedcheck
	) {
	if (!this.env.is_sent && this.cmp_hash != this.compose_field_hash()) {
	this.confirm_dialog(this.get_label('notsentwarning'), 'discard', function() {
	// remove copy from local storage if compose screen is left intentionally
	ref.remove_compose_data(ref.env.compose_id);
	ref.compose_skip_unsavedcheck = true;
	ref.command(command, props, obj, event);
	});

	return false;
	}
	}

	this.last_command = command;

	// process external commands
	if (typeof this.command_handlers[command] === 'function') {
	ret = this.command_handlers[command](props, obj, event);
	return ret !== undefined ? ret : (obj ? false : true);
	}
	else if (typeof this.command_handlers[command] === 'string') {
	ret = window[this.command_handlers[command]](props, obj, event);
	return ret !== undefined ? ret : (obj ? false : true);
	}

	// trigger plugin hooks
	this.triggerEvent('actionbefore', {props:props, action:command, originalEvent:event});
	ret = this.triggerEvent('before'+command, props \|\| event);
	if (ret !== undefined) {
	// abort if one of the handlers returned false
	if (ret === false)
	return false;
	else
	props = ret;
	}

	ret = undefined;

	// process internal command
	switch (command) {

	// commands to switch task
	case 'logout':
	case 'mail':
	case 'addressbook':
	case 'settings':
	this.switch_task(command);
	break;

	case 'about':
	this.redirect('?_task=settings&_action=about', false);
	break;

	case 'permaurl':
	if (obj && obj.href && obj.target)
	return true;
	else if (this.env.permaurl)
	parent.location.href = this.env.permaurl;
	break;

	case 'extwin':
	if (this.env.action == 'compose') {
	var form = this.gui_objects.messageform,
	win = this.open_window('');

	if (win) {
	this.save_compose_form_local();
	this.compose_skip_unsavedcheck = true;
	$("[name='_action']", form).val('compose');
	form.action = this.url('mail/compose', { _id: this.env.compose_id, _extwin: 1 });
	form.target = win.name;
	form.submit();
	}
	}
	else {
	this.open_window(this.env.permaurl, true);
	}
	break;

	case 'change-format':
	url = this.env.permaurl + '&_format=' + props;

	if (this.env.action == 'preview')
	url = url.replace(/_action=show/, '_action=preview') + '&_framed=1';
	if (this.env.extwin)
	url += '&_extwin=1';

	location.href = url;
	break;

	case 'menu-open':
	if (props && props.menu == 'attachmentmenu') {
	var mimetype = this.env.attachments[props.id];
	if (mimetype && mimetype.mimetype) // in compose format is different
	mimetype = mimetype.mimetype;
	this.enable_command('open-attachment', mimetype && this.env.mimetypes && $.inArray(mimetype, this.env.mimetypes) >= 0);
	}
	this.show_menu(props, props.show \|\| undefined, event);
	break;

	case 'menu-close':
	this.hide_menu(props, event);
	break;

	case 'menu-save':
	this.triggerEvent(command, {props:props, originalEvent:event});
	return false;

	case 'open':
	if (uid = this.get_single_uid()) {
	obj.href = this.url('show', this.params_from_uid(uid, {_extwin: 1}));
	return true;
	}
	break;

	case 'close':
	if (this.env.extwin)
	window.close();
	break;

	case 'list':
	if (props && props != '') {
	this.reset_qsearch(true);
	}
	if (this.env.action == 'compose' && this.env.extwin) {
	window.close();
	}
	else if (this.task == 'mail') {
	this.list_mailbox(props);
	this.set_button_titles();
	}
	else if (this.task == 'addressbook')
	this.list_contacts(props);
	break;

	case 'set-listmode':
	this.set_list_options(null, undefined, undefined, props == 'threads' ? 1 : 0);
	break;

	case 'sort':
	var sort_order = this.env.sort_order,
	sort_col = !this.env.disabled_sort_col ? props : this.env.sort_col;

	if (!this.env.disabled_sort_order)
	sort_order = this.env.sort_col == sort_col && sort_order == 'ASC' ? 'DESC' : 'ASC';

	// set table header and update env
	this.set_list_sorting(sort_col, sort_order);

	// reload message list
	this.list_mailbox('', '', sort_col+'_'+sort_order);
	break;

	case 'nextpage':
	this.list_page('next');
	break;

	case 'lastpage':
	this.list_page('last');
	break;

	case 'previouspage':
	this.list_page('prev');
	break;

	case 'firstpage':
	this.list_page('first');
	break;

	case 'expunge':
	if (this.env.exists)
	this.expunge_mailbox(this.env.mailbox);
	break;

	case 'purge':
	case 'empty-mailbox':
	if (this.env.exists)
	this.purge_mailbox(this.env.mailbox);
	break;

	// common commands used in multiple tasks
	case 'show':
	if (this.task == 'mail') {
	uid = this.get_single_uid();
	if (uid && (!this.env.uid \|\| uid != this.env.uid)) {
	if (this.env.mailbox == this.env.drafts_mailbox)
	this.open_compose_step({ _draft_uid: uid, _mbox: this.env.mailbox });
	else
	this.show_message(uid);
	}
	}
	else if (this.task == 'addressbook') {
	cid = props ? props : this.get_single_cid();
	if (cid && !(this.env.action == 'show' && cid == this.env.cid))
	this.load_contact(cid, 'show');
	}
	else if (this.task == 'settings') {
	this.goto_url('settings/' + props, {_framed: 0});
	}
	break;

	case 'add':
	if (this.task == 'addressbook')
	this.load_contact(0, 'add');
	else if (this.task == 'settings' && this.env.action == 'responses')
	this.load_response(0, 'add-response');
	else if (this.task == 'settings')
	this.load_identity(0, 'add-identity');
	break;

	case 'edit':
	if (this.task == 'addressbook' && (cid = this.get_single_cid()))
	this.load_contact(cid, 'edit');
	else if (this.task == 'mail' && (uid = this.get_single_uid())) {
	url = { _mbox: this.get_message_mailbox(uid) };
	url[this.env.mailbox == this.env.drafts_mailbox && props != 'new' ? '_draft_uid' : '_uid'] = uid;
	this.open_compose_step(url);
	}
	break;

	case 'save':
	var input, form = this.gui_objects.editform;
	if (form) {
	// user prefs
	if ((input = $("[name='_pagesize']", form)) && input.length && isNaN(parseInt(input.val()))) {
	this.alert_dialog(this.get_label('nopagesizewarning'), function() {
	input.focus();
	});
	break;
	}
	// contacts/identities
	else {
	// reload form
	if (props == 'reload') {
	form.action += '&_reload=1';
	}
	else if (this.task == 'settings' && (this.env.identities_level % 2) == 0 &&
	(input = $("[name='_email']", form)) && input.length && !rcube_check_email(input.val())
	) {
	this.alert_dialog(this.get_label('noemailwarning'), function() {
	input.focus();
	});
	break;
	}
	}

	// add selected source (on the list)
	if (parent.rcmail && parent.rcmail.env.source)
	form.action = this.add_url(form.action, '_orig_source', parent.rcmail.env.source);

	form.submit();
	}
	break;

	case 'delete':
	// mail task
	if (this.task == 'mail')
	this.delete_messages(event);
	// addressbook task
	else if (this.task == 'addressbook')
	this.delete_contacts();
	// settings: canned response
	else if (this.task == 'settings' && this.env.action == 'responses')
	this.delete_response();
	// settings: user identities
	else if (this.task == 'settings')
	this.delete_identity();
	break;

	// mail task commands
	case 'move':
	case 'moveto': // deprecated
	if (this.task == 'mail')
	this.move_messages(props, event);
	else if (this.task == 'addressbook')
	this.move_contacts(props, event);
	break;

	case 'copy':
	if (this.task == 'mail')
	this.copy_messages(props, event);
	else if (this.task == 'addressbook')
	this.copy_contacts(props, event);
	break;

	case 'mark':
	if (props)
	this.mark_message(props);
	break;

	case 'toggle_status':
	case 'toggle_flag':
	flag = command == 'toggle_flag' ? 'flagged' : 'read';

	if (uid = props) {
	// toggle flagged/unflagged
	if (flag == 'flagged') {
	if (this.message_list.rows[uid].flagged)
	flag = 'unflagged';
	}
	// toggle read/unread
	else if (this.message_list.rows[uid].deleted)
	flag = 'undelete';
	else if (!this.message_list.rows[uid].unread)
	flag = 'unread';

	this.mark_message(flag, uid);
	}

	break;

	case 'add-contact':
	this.add_contact(props);
	break;

	case 'load-remote':
	if (this.env.uid) {
	if (props && this.env.sender) {
	this.add_contact(this.env.sender, true);
	break;
	}

	this.show_message(this.env.uid, true, this.env.action == 'preview');
	}
	break;

	case 'load-attachment':
	case 'open-attachment':
	case 'download-attachment':
	var params, mimetype = this.env.attachments[props];

	if (this.env.action == 'compose') {
	params = {_file: props, _id: this.env.compose_id};
	mimetype = mimetype ? mimetype.mimetype : '';
	}
	else {
	params = {_mbox: this.env.mailbox, _uid: this.env.uid, _part: props};
	}

	// open attachment in frame if it's of a supported mimetype
	if (command != 'download-attachment' && mimetype && this.env.mimetypes && $.inArray(mimetype, this.env.mimetypes) >= 0) {
	// Note: We disable _framed for proper X-Frame-Options:deny support (#6688)
	if (this.open_window(this.url('get', $.extend({_frame: 1, _framed: 0}, params))))
	break;
	}

	params._download = 1;

	// prevent from page unload warning in compose
	this.compose_skip_unsavedcheck = 1;
	this.goto_url('get', params, false, true);
	this.compose_skip_unsavedcheck = 0;

	break;

	case 'select-all':
	this.select_all_mode = props ? false : true;
	this.dummy_select = true; // prevent msg opening if there's only one msg on the list
	var list = this[this.task == 'addressbook' ? 'contact_list' : 'message_list'];
	if (props == 'invert')
	list.invert_selection();
	else
	list.select_all(props == 'page' ? '' : props);
	this.dummy_select = null;
	break;

	case 'select-none':
	this.select_all_mode = false;
	this[this.task == 'addressbook' ? 'contact_list' : 'message_list'].clear_selection();
	break;

	case 'expand-all':
	this.env.autoexpand_threads = 1;
	this.message_list.expand_all();
	break;

	case 'expand-unread':
	this.env.autoexpand_threads = 2;
	this.message_list.collapse_all();
	this.expand_unread();
	break;

	case 'collapse-all':
	this.env.autoexpand_threads = 0;
	this.message_list.collapse_all();
	break;

	case 'nextmessage':
	if (this.env.next_uid)
	this.show_message(this.env.next_uid, false, this.env.action == 'preview');
	break;

	case 'lastmessage':
	if (this.env.last_uid)
	this.show_message(this.env.last_uid);
	break;

	case 'previousmessage':
	if (this.env.prev_uid)
	this.show_message(this.env.prev_uid, false, this.env.action == 'preview');
	break;

	case 'firstmessage':
	if (this.env.first_uid)
	this.show_message(this.env.first_uid);
	break;

	case 'compose':
	url = {};

	if (this.task == 'mail') {
	url = {_mbox: this.env.mailbox, _search: this.env.search_request};
	if (props)
	url._to = props;
	}
	// modify url if we're in addressbook
	else if (this.task == 'addressbook') {
	// switch to mail compose step directly
	if (props && props.indexOf('@') > 0) {
	url._to = props;
	}
	else {
	var a_cids = [];
	// use contact id passed as command parameter
	if (props)
	a_cids.push(props);
	// get selected contacts
	else if (this.contact_list)
	a_cids = this.contact_list.get_selection();

	if (a_cids.length) {
	this.http_post('mailto', { _cid: a_cids.join(','), _source: this.env.source }, true);
	break;
	}
	else if (this.env.group && this.env.pagecount) {
	this.http_post('mailto', { _gid: this.env.group, _source: this.env.source }, true);
	break;
	}
	}
	}
	else if (props && typeof props == 'string') {
	url._to = props;
	}
	else if (props && typeof props == 'object') {
	$.extend(url, props);
	}

	this.open_compose_step(url);
	break;

	case 'spellcheck':
	if (this.spellcheck_state()) {
	this.editor.spellcheck_stop();
	}
	else {
	this.editor.spellcheck_start();
	}
	break;

	case 'savedraft':
	// Reset the auto-save timer
	clearTimeout(this.save_timer);

	// compose form did not change (and draft wasn't saved already)
	if (this.env.draft_id && this.cmp_hash == this.compose_field_hash()) {
	this.auto_save_start();
	break;
	}

	this.submit_messageform(true);
	break;

	case 'send':
	if (!props.nocheck && !this.env.is_sent && !this.check_compose_input(command))
	break;

	// Reset the auto-save timer
	clearTimeout(this.save_timer);

	this.submit_messageform();
	break;

	case 'send-attachment':
	// Reset the auto-save timer
	clearTimeout(this.save_timer);

	if (!(flag = this.upload_file(props \|\| this.gui_objects.uploadform, 'upload'))) {
	if (flag !== false)
	this.alert_dialog(this.get_label('selectimportfile'));
	aborted = true;
	}
	break;

	case 'insert-sig':
	this.change_identity($("[name='_from']")[0], true);
	break;

	case 'list-addresses':
	this.list_contacts(props);
	this.enable_command('add-recipient', false);
	break;

	case 'add-recipient':
	this.compose_add_recipient(props);
	break;

	case 'reply-all':
	case 'reply-list':
	case 'reply':
	if (uid = this.get_single_uid()) {
	url = {_reply_uid: uid, _mbox: this.get_message_mailbox(uid), _search: this.env.search_request};
	if (command == 'reply-all')
	// do reply-list, when list is detected and popup menu wasn't used
	url._all = (!props && this.env.reply_all_mode == 1 && this.commands['reply-list'] ? 'list' : 'all');
	else if (command == 'reply-list')
	url._all = 'list';

	this.open_compose_step(url);
	}
	break;

	case 'forward-attachment':
	case 'forward-inline':
	case 'forward':
	var uids = this.env.uid ? [this.env.uid] : (this.message_list ? this.message_list.get_selection() : []);
	if (uids.length) {
	url = { _forward_uid: this.uids_to_list(uids), _mbox: this.env.mailbox, _search: this.env.search_request };
	if (command == 'forward-attachment' \|\| (!props && this.env.forward_attachment) \|\| uids.length > 1)
	url._attachment = 1;
	this.open_compose_step(url);
	}
	break;

	case 'print':
	if (this.task == 'addressbook') {
	if (uid = this.get_single_cid()) {
	url = '&_action=print&_cid=' + uid;
	if (this.env.source)
	url += '&_source=' + urlencode(this.env.source);
	this.open_window(this.env.comm_path + url, true, true);
	}
	}
	else if (this.env.action == 'get' && !this.env.is_message) {
	this.gui_objects.messagepartframe.contentWindow.print();
	}
	else if (uid = this.get_single_uid()) {
	url = this.url('print', this.params_from_uid(uid, {_safe: this.env.safemode ? 1 : 0}));
	if (this.open_window(url, true, true)) {
	if (this.env.action != 'show' && this.env.action != 'get')
	this.mark_message('read', uid);
	}
	}
	break;

	case 'viewsource':
	if (uid = this.get_single_uid())
	this.open_window(this.url('viewsource', this.params_from_uid(uid)), true, true);
	break;

	case 'download':
	if (this.env.action == 'get') {
	location.href = this.secure_url(location.href.replace(/_frame=/, '_download='));
	}
	else if (uid = this.get_single_uid()) {
	this.goto_url('viewsource', this.params_from_uid(uid, {_save: 1}), false, true);
	}
	break;

	// quicksearch
	case 'search':
	ret = this.qsearch(props);
	break;

	// reset quicksearch
	case 'reset-search':
	var n, s = this.env.search_request \|\| this.env.qsearch;

	this.reset_qsearch(true);

	if (s && this.env.action == 'compose') {
	if (this.contact_list)
	this.list_contacts_clear();
	}
	else if (s && this.env.mailbox) {
	this.list_mailbox(this.env.mailbox, 1);
	}
	else if (s && this.task == 'addressbook') {
	if (this.env.source == '') {
	for (n in this.env.address_sources) break;
	this.env.source = n;
	this.env.group = '';
	}
	this.list_contacts(this.env.source, this.env.group, 1);
	}
	break;

	case 'pushgroup':
	// add group ID and current search to stack
	var group = {
	id: props.id,
	search_request: this.env.search_request,
	page: this.env.current_page,
	search: this.env.search_request && this.gui_objects.qsearchbox ? this.gui_objects.qsearchbox.value : null
	};

	this.env.address_group_stack.push(group);
	if (obj && event)
	rcube_event.cancel(event);

	case 'listgroup':
	this.reset_qsearch();
	this.list_contacts(props.source, props.id, 1, group);
	break;

	case 'popgroup':
	if (this.env.address_group_stack.length) {
	var old = this.env.address_group_stack.pop();
	this.reset_qsearch();

	if (old.search_request) {
	// this code is executed when going back to the search result
	if (old.search && this.gui_objects.qsearchbox)
	$(this.gui_objects.qsearchbox).val(old.search);
	this.env.search_request = old.search_request;
	this.list_contacts_remote(null, null, this.env.current_page = old.page);
	}
	else
	this.list_contacts(props.source, this.env.address_group_stack[this.env.address_group_stack.length-1].id);
	}
	break;

	case 'import-messages':
	var form = props \|\| this.gui_objects.importform,
	importlock = this.set_busy(true, 'importwait');

	if (!(flag = this.upload_file(form, 'import', importlock))) {
	this.set_busy(false, null, importlock);
	if (flag !== false)
	this.alert_dialog(this.get_label('selectimportfile'));
	aborted = true;
	}
	break;

	case 'import':
	var dialog = $('<iframe>').attr('src', this.url('import', {_framed: 1, _target: this.env.source})),
	import_func = function(e) {
	var win = dialog[0].contentWindow,
	form = win.rcmail.gui_objects.importform;

	if (form) {
	var lock, file = win.$('#rcmimportfile')[0];
	if (file && !file.value) {
	win.rcmail.alert_dialog(win.rcmail.get_label('selectimportfile'));
	return;
	}

	lock = win.rcmail.set_busy(true, 'importwait');
	$('[name="_unlock"]', form).val(lock);
	form.submit();
	win.rcmail.lock_form(form, true);
	// disable Import button
	$(e.target).attr('disabled', true).next().focus();
	}
	},
	close_func = function(event, ui) {
	$(this).remove();
	if (ref.import_state == 'reload')
	ref.command('list');
	};

	this.import_state = null;
	this.import_dialog = this.simple_dialog(dialog, this.gettext('importcontacts'), import_func, {
	close: close_func,
	button: 'import',
	width: 500,
	height: 300
	});

	break;

	case 'export':
	if (this.contact_list.rowcount > 0) {
	this.goto_url('export', { _source: this.env.source, _gid: this.env.group, _search: this.env.search_request }, false, true);
	}
	break;

	case 'export-selected':
	if (this.contact_list.rowcount > 0) {
	this.goto_url('export', { _source: this.env.source, _gid: this.env.group, _cid: this.contact_list.get_selection().join(',') }, false, true);
	}
	break;

	case 'upload-photo':
	this.upload_contact_photo(props \|\| this.gui_objects.uploadform);
	break;

	case 'delete-photo':
	this.replace_contact_photo('-del-');
	break;

	case 'undo':
	this.http_request('undo', '', this.display_message('', 'loading'));
	break;

	// unified command call (command name == function name)
	default:
	var func = command.replace(/-/g, '_');
	if (this[func] && typeof this[func] === 'function') {
	ret = this[func](props, obj, event);
	}
	break;
	}

	if (!aborted && this.triggerEvent('after'+command, props) === false)
	ret = false;
	this.triggerEvent('actionafter', { props:props, action:command, aborted:aborted, ret:ret, originalEvent:event});

	if (ret === false)
	return false;

	if (obj \|\| aborted === true)
	return false;

	return true;
	};

	// set command(s) enabled or disabled
	this.enable_command = function()
	{
	var i, n, args = Array.prototype.slice.call(arguments),
	enable = args.pop(), cmd;

	for (n=0; n<args.length; n++) {
	cmd = args[n];
	// argument of type array
	if (typeof cmd === 'string') {
	this.commands[cmd] = enable;
	this.set_button(cmd, (enable ? 'act' : 'pas'));
	this.triggerEvent('enable-command', {command: cmd, status: enable});
	}
	// push array elements into commands array
	else {
	for (i in cmd)
	args.push(cmd[i]);
	}
	}

	this.set_menu_buttons();
	};

	this.command_enabled = function(cmd)
	{
	return this.commands[cmd];
	};

	// lock/unlock interface
	this.set_busy = function(a, message, id)
	{
	if (a && message) {
	var msg = this.get_label(message);
	if (msg == message)
	msg = 'Loading...';

	id = this.display_message(msg, 'loading');
	}
	else if (!a && id) {
	this.hide_message(id);
	}

	this.busy = a;

	if (this.gui_objects.editform)
	this.lock_form(this.gui_objects.editform, a);

	return id;
	};

	// return a localized string
	this.get_label = function(name, domain)
	{
	if (domain && this.labels[domain+'.'+name])
	return this.labels[domain+'.'+name];
	else if (this.labels[name])
	return this.labels[name];
	else
	return name;
	};

	// alias for convenience reasons
	this.gettext = this.get_label;

	// switch to another application task
	this.switch_task = function(task)
	{
	var action, path;

	if ((path = task.split('/')).length == 2) {
	task = path[0];
	action = path[1];
	}

	if (this.task === task && task != 'mail')
	return;

	var url = this.get_task_url(task);

	if (action)
	url += '&_action=' + action;

	if (task == 'mail')
	url += '&_mbox=INBOX';
	else if (task == 'logout') {
	url = this.secure_url(url);
	this.clear_compose_data();
	}

	this.redirect(url);
	};

	this.get_task_url = function(task, url)
	{
	if (!url)
	url = this.env.comm_path;

	if (url.match(/[?&]_task=[a-zA-Z0-9_-]+/))
	return url.replace(/_task=[a-zA-Z0-9_-]+/, '_task=' + task);
	else
	return url.replace(/\?.*$/, '') + '?_task=' + task;
	};

	this.reload = function(delay)
	{
	if (this.is_framed())
	parent.rcmail.reload(delay);
	else if (delay)
	setTimeout(function() { ref.reload(); }, delay);
	else if (window.location)
	location.href = this.url('', {_extwin: this.env.extwin});
	};

	// Add variable to GET string, replace old value if exists
	this.add_url = function(url, name, value)
	{
	var urldata, datax, hash = '';

	value = urlencode(value);

	if (/(#[a-z0-9_-]+)$/.test(url)) {
	hash = RegExp.$1;
	url = url.substr(0, url.length - hash.length);
	}

	if (/(\?.*)$/.test(url)) {
	urldata = RegExp.$1;
	datax = RegExp('((\\?\|&)'+RegExp.escape(name)+'=[^&]*)');

	if (datax.test(urldata))
	urldata = urldata.replace(datax, RegExp.$2 + name + '=' + value);
	else
	urldata += '&' + name + '=' + value;

	return url.replace(/(\?.*)$/, urldata) + hash;
	}

	return url + '?' + name + '=' + value + hash;
	};

	// append CSRF protection token to the given url
	this.secure_url = function(url)
	{
	return this.add_url(url, '_token', this.env.request_token);
	},

	this.is_framed = function()
	{
	return this.env.framed && parent.rcmail && parent.rcmail != this && typeof parent.rcmail.command == 'function';
	};

	this.save_pref = function(prop)
	{
	var request = {_name: prop.name, _value: prop.value};

	if (prop.session)
	request._session = prop.session;
	if (prop.env)
	this.env[prop.env] = prop.value;

	this.http_post('save-pref', request);
	};

	this.html_identifier = function(str, encode)
	{
	return encode ? this.html_identifier_encode(str) : String(str).replace(this.identifier_expr, '_');
	};

	this.html_identifier_encode = function(str)
	{
	return Base64.encode(String(str)).replace(/=+$/, '').replace(/\+/g, '-').replace(/\//g, '_');
	};

	this.html_identifier_decode = function(str)
	{
	str = String(str).replace(/-/g, '+').replace(/_/g, '/');

	while (str.length % 4) str += '=';

	return Base64.decode(str);
	};


	/*********************************************************/
	/******* event handling methods *******/
	/*********************************************************/

	this.drag_menu = function(e, target)
	{
	var modkey = rcube_event.get_modifier(e),
	menu = this.gui_objects.dragmenu;

	if (menu && modkey == SHIFT_KEY && this.commands['copy']) {
	var pos = rcube_event.get_mouse_pos(e);
	this.env.drag_target = target;
	this.show_menu(this.gui_objects.dragmenu.id, true, e);
	$(menu).css({top: (pos.y-10)+'px', left: (pos.x-10)+'px'});
	return true;
	}

	return false;
	};

	this.drag_menu_action = function(action)
	{
	var menu = this.gui_objects.dragmenu;
	if (menu) {
	$(menu).hide();
	}

	this.command(action, this.env.drag_target);
	this.env.drag_target = null;
	};

	this.drag_start = function(list)
	{
	this.drag_active = true;

	if (this.preview_timer)
	clearTimeout(this.preview_timer);

	// prepare treelist widget for dragging interactions
	if (this.treelist)
	this.treelist.drag_start();
	};

	this.drag_end = function(e)
	{
	var list, model;

	if (this.treelist)
	this.treelist.drag_end();

	// execute drag & drop action when mouse was released
	if (list = this.message_list)
	model = this.env.mailboxes;
	else if (list = this.contact_list)
	model = this.env.contactfolders;

	// Note: we accept only mouse events to ignore dragging aborts with ESC key (#6623)
	if (this.drag_active && model && this.env.last_folder_target && !rcube_event.is_keyboard(e)) {
	var target = model[this.env.last_folder_target];
	list.draglayer.hide();

	if (this.contact_list) {
	if (!this.contacts_drag_menu(e, target))
	this.command('move', target);
	}
	else if (!this.drag_menu(e, target))
	this.command('move', target);
	}

	this.drag_active = false;
	this.env.last_folder_target = null;
	};

	this.drag_move = function(e)
	{
	if (this.gui_objects.folderlist) {
	var drag_target, oldclass,
	layerclass = 'draglayernormal',
	mouse = rcube_event.get_mouse_pos(e);

	if (this.contact_list && this.contact_list.draglayer)
	oldclass = this.contact_list.draglayer.attr('class');

	// mouse intersects a valid drop target on the treelist
	if (this.treelist && (drag_target = this.treelist.intersects(mouse, true))) {
	this.env.last_folder_target = drag_target;
	layerclass = 'draglayer' + (this.check_droptarget(drag_target) > 1 ? 'copy' : 'normal');
	}
	else {
	// Clear target, otherwise drag end will trigger move into last valid droptarget
	this.env.last_folder_target = null;
	}

	if (layerclass != oldclass && this.contact_list && this.contact_list.draglayer)
	this.contact_list.draglayer.attr('class', layerclass);
	}
	};

	this.collapse_folder = function(name)
	{
	if (this.treelist)
	this.treelist.toggle(name);
	};

	this.folder_collapsed = function(node)
	{
	var prefname = this.env.task == 'addressbook' ? 'collapsed_abooks' : 'collapsed_folders',
	old = this.env[prefname];

	if (node.collapsed) {
	this.env[prefname] = this.env[prefname] + '&'+urlencode(node.id)+'&';

	// select the folder if one of its childs is currently selected
	// don't select if it's virtual (#1488346)
	if (!node.virtual && this.env.mailbox && this.env.mailbox.startsWith(node.id + this.env.delimiter))
	this.command('list', node.id);
	}
	else {
	var reg = new RegExp('&'+urlencode(node.id)+'&');
	this.env[prefname] = this.env[prefname].replace(reg, '');
	}

	if (!this.drag_active) {
	if (old !== this.env[prefname])
	this.command('save-pref', { name: prefname, value: this.env[prefname] });

	if (this.env.unread_counts)
	this.set_unread_count_display(node.id, false);
	}
	};

	// global mouse-click handler to cleanup some UI elements
	this.doc_mouse_up = function(e)
	{
	var list, id, target = rcube_event.get_target(e);

	// ignore event if jquery UI dialog is open
	if ($(target).closest('.ui-dialog, .ui-widget-overlay').length)
	return;

	// remove focus from list widgets
	if (window.rcube_list_widget && rcube_list_widget._instances.length) {
	$.each(rcube_list_widget._instances, function(i,list) {
	if (list && !rcube_mouse_is_over(e, list.list.parentNode))
	list.blur();
	});
	}

	// reset 'pressed' buttons
	if (this.buttons_sel) {
	for (id in this.buttons_sel)
	if (typeof id !== 'function')
	this.button_out(this.buttons_sel[id], id);
	this.buttons_sel = {};
	}

	// reset popup menus; delayed to have updated menu_stack data
	setTimeout(function(e) {
	var obj, skip, config, id, i, parents = $(target).parents();
	for (i = ref.menu_stack.length - 1; i >= 0; i--) {
	id = ref.menu_stack[i];
	obj = $('#' + id);

	if (obj.is(':visible')
	&& target != obj.data('opener')
	&& target != obj.get(0) // check if scroll bar was clicked (#1489832)
	&& !parents.is(obj.data('opener'))
	&& id != skip
	&& (obj.attr('data-editable') != 'true' \|\| !$(target).parents('#' + id).length)
	&& (obj.attr('data-sticky') != 'true' \|\| !rcube_mouse_is_over(e, obj.get(0)))
	) {
	ref.hide_menu(id, e);
	}
	skip = obj.data('parent');
	}
	}, 10, e);
	};

	// global keypress event handler
	this.doc_keypress = function(e)
	{
	// Helper method to move focus to the next/prev active menu item
	var focus_menu_item = function(dir) {
	var obj, item, mod = dir < 0 ? 'prevAll' : 'nextAll', limit = dir < 0 ? 'last' : 'first';
	if (ref.focused_menu && (obj = $('#'+ref.focused_menu))) {
	item = obj.find(':focus').closest('li')[mod](':has(:not([aria-disabled=true]))').find('a,input')[limit]();
	if (!item.length)
	item = obj.find(':focus').closest('ul')[mod](':has(:not([aria-disabled=true]))').find('a,input')[limit]();
	return item.focus().length;
	}

	return 0;
	};

	var target = e.target \|\| {},
	keyCode = rcube_event.get_keycode(e);

	if (e.keyCode != 27 && (!this.menu_keyboard_active \|\| target.nodeName == 'TEXTAREA' \|\| target.nodeName == 'SELECT')) {
	return true;
	}

	switch (keyCode) {
	case 38:
	case 40:
	case 63232: // "up", in safari keypress
	case 63233: // "down", in safari keypress
	focus_menu_item(keyCode == 38 \|\| keyCode == 63232 ? -1 : 1);
	return rcube_event.cancel(e);

	case 9: // tab
	if (this.focused_menu) {
	var mod = rcube_event.get_modifier(e);
	if (!focus_menu_item(mod == SHIFT_KEY ? -1 : 1)) {
	this.hide_menu(this.focused_menu, e);
	}
	}
	return rcube_event.cancel(e);

	case 27: // esc
	if (this.menu_stack.length)
	this.hide_menu(this.menu_stack[this.menu_stack.length-1], e);
	break;
	}

	return true;
	}

	this.msglist_select = function(list)
	{
	if (this.preview_timer)
	clearTimeout(this.preview_timer);

	var selected = list.get_single_selection();

	this.enable_command(this.env.message_commands, selected != null);
	if (selected) {
	// Hide certain command buttons when Drafts folder is selected
	if (this.env.mailbox == this.env.drafts_mailbox)
	this.enable_command('reply', 'reply-all', 'reply-list', 'forward', 'forward-attachment', 'forward-inline', false);
	// Disable reply-list when List-Post header is not set
	else {
	var msg = this.env.messages[selected];
	if (!msg.ml)
	this.enable_command('reply-list', false);
	}
	}
	// Multi-message commands
	this.enable_command('delete', 'move', 'copy', 'mark', 'forward', 'forward-attachment', list.get_selection(false).length > 0);

	// reset all-pages-selection
	if (selected \|\| (list.get_selection(false).length && list.get_selection(false).length != list.rowcount))
	this.select_all_mode = false;

	// start timer for message preview (wait for double click)
	if (selected && this.env.contentframe && !list.multi_selecting && !this.dummy_select) {
	// try to be responsive and try not to overload the server when user is pressing up/down key repeatedly
	var now = new Date().getTime();
	var time_diff = now - (this._last_msglist_select_time \|\| 0);
	var preview_pane_delay = this.preview_delay_click;

	// user is selecting messages repeatedly, wait until this ends (use larger delay)
	if (time_diff < this.preview_delay_select) {
	preview_pane_delay = this.preview_delay_select;
	if (this.preview_timer) {
	clearTimeout(this.preview_timer);
	}
	if (this.env.contentframe) {
	this.show_contentframe(false);
	}
	}

	this._last_msglist_select_time = now;
	this.preview_timer = setTimeout(function() { ref.msglist_get_preview(); }, preview_pane_delay);
	}
	else if (this.env.contentframe) {
	this.show_contentframe(false);
	}
	};

	this.msglist_dbl_click = function(list)
	{
	if (this.preview_timer)
	clearTimeout(this.preview_timer);

	var uid = list.get_single_selection();

	if (uid && (this.env.messages[uid].mbox \|\| this.env.mailbox) == this.env.drafts_mailbox)
	this.open_compose_step({ _draft_uid: uid, _mbox: this.env.mailbox });
	else if (uid)
	this.show_message(uid, false, false);
	};

	this.msglist_keypress = function(list)
	{
	if (list.modkey == CONTROL_KEY)
	return;

	if (list.key_pressed == list.ENTER_KEY)
	this.command('show');
	else if (list.key_pressed == list.DELETE_KEY \|\| list.key_pressed == list.BACKSPACE_KEY)
	this.command('delete');
	else if (list.key_pressed == 33)
	this.command('previouspage');
	else if (list.key_pressed == 34)
	this.command('nextpage');
	};

	this.msglist_get_preview = function()
	{
	var uid = this.get_single_uid();
	if (uid && this.env.contentframe && !this.drag_active)
	this.show_message(uid, false, true);
	else if (this.env.contentframe)
	this.show_contentframe(false);
	};

	this.msglist_expand = function(row)
	{
	if (this.env.messages[row.uid])
	this.env.messages[row.uid].expanded = row.expanded;
	$(row.obj)[row.expanded?'addClass':'removeClass']('expanded');
	};

	this.msglist_set_coltypes = function(list)
	{
	var i, found, name, cols = list.thead.rows[0].cells;

	this.env.listcols = [];

	for (i=0; i<cols.length; i++)
	if (cols[i].id && cols[i].id.startsWith('rcm')) {
	name = cols[i].id.slice(3);
	this.env.listcols.push(name);
	}

	if ((found = $.inArray('flag', this.env.listcols)) >= 0)
	this.env.flagged_col = found;

	if ((found = $.inArray('subject', this.env.listcols)) >= 0)
	this.env.subject_col = found;

	this.command('save-pref', { name: 'list_cols', value: this.env.listcols, session: 'list_attrib/columns' });
	};

	this.check_droptarget = function(id)
	{
	switch (this.task) {
	case 'mail':
	return (this.env.mailboxes[id]
	&& !this.env.mailboxes[id].virtual
	&& (this.env.mailboxes[id].id != this.env.mailbox \|\| this.is_multifolder_listing())) ? 1 : 0;

	case 'addressbook':
	var target;
	if (id != this.env.source && (target = this.env.contactfolders[id])) {
	// droptarget is a group
	if (target.type == 'group') {
	if (target.id != this.env.group && !this.env.contactfolders[target.source].readonly) {
	var is_other = this.env.selection_sources.length > 1 \|\| $.inArray(target.source, this.env.selection_sources) == -1;
	return !is_other \|\| this.commands.move ? 1 : 2;
	}
	}
	// droptarget is a (writable) addressbook and it's not the source
	else if (!target.readonly && (this.env.selection_sources.length > 1 \|\| $.inArray(id, this.env.selection_sources) == -1)) {
	return this.commands.move ? 1 : 2;
	}
	}
	}

	return 0;
	};

	// open popup window
	this.open_window = function(url, small, toolbar)
	{
	var wname = 'rcmextwin' + new Date().getTime();

	url += (url.match(/\?/) ? '&' : '?') + '_extwin=1';

	if (this.env.standard_windows)
	var extwin = window.open(url, wname);
	else {
	var win = this.is_framed() ? parent.window : window,
	page = $(win),
	page_width = page.width(),
	page_height = bw.mz ? $('body', win).height() : page.height(),
	w = Math.min(small ? this.env.popup_width_small : this.env.popup_width, page_width),
	h = page_height, // always use same height
	l = (win.screenLeft \|\| win.screenX) + 20,
	t = (win.screenTop \|\| win.screenY) + 20,
	extwin = window.open(url, wname,
	'width='+w+',height='+h+',top='+t+',left='+l+',resizable=yes,location=no,scrollbars=yes'
	+(toolbar ? ',toolbar=yes,menubar=yes,status=yes' : ',toolbar=no,menubar=no,status=no'));
	}

	// detect popup blocker (#1489618)
	// don't care this might not work with all browsers
	if (!extwin \|\| extwin.closed) {
	this.display_message('windowopenerror', 'warning');
	return;
	}

	// write loading... message to empty windows
	if (!url && extwin.document) {
	extwin.document.write('<html><body>' + this.get_label('loading') + '</body></html>');
	}

	// allow plugins to grab the window reference (#1489413)
	this.triggerEvent('openwindow', { url:url, handle:extwin });

	// focus window, delayed to bring to front
	setTimeout(function() { extwin && extwin.focus(); }, 10);

	return extwin;
	};


	/*********************************************************/
	/******* (message) list functionality *******/
	/*********************************************************/

	this.init_message_row = function(row)
	{
	var i, fn = {}, uid = row.uid,
	status_icon = (this.env.status_col != null ? 'status' : 'msg') + 'icn' + row.id;

	if (uid && this.env.messages[uid])
	$.extend(row, this.env.messages[uid]);

	// set eventhandler to status icon
	if (row.icon = document.getElementById(status_icon)) {
	fn.icon = function(e) { ref.command('toggle_status', uid); };
	}

	// save message icon position too
	if (this.env.status_col != null)
	row.msgicon = document.getElementById('msgicn'+row.id);
	else
	row.msgicon = row.icon;

	// set eventhandler to flag icon
	if (this.env.flagged_col != null && (row.flagicon = document.getElementById('flagicn'+row.id))) {
	fn.flagicon = function(e) { ref.command('toggle_flag', uid); };
	}

	// set event handler to thread expand/collapse icon
	if (!row.depth && row.has_children && (row.expando = document.getElementById('rcmexpando'+row.id))) {
	fn.expando = function(e) { ref.expand_message_row(e, uid); };
	}

	// attach events
	$.each(fn, function(i, f) {
	row[i].onclick = function(e) { f(e); return rcube_event.cancel(e); };
	if (bw.touch && row[i].addEventListener) {
	row[i].addEventListener('touchend', function(e) {
	if (e.changedTouches.length == 1) {
	f(e);
	return rcube_event.cancel(e);
	}
	}, false);
	}
	});

	this.triggerEvent('insertrow', { uid:uid, row:row });
	};

	// create a table row in the message list
	this.add_message_row = function(uid, cols, flags, attop)
	{
	if (!this.gui_objects.messagelist \|\| !this.message_list)
	return false;

	// Prevent from adding messages from different folder (#1487752)
	if (flags.mbox != this.env.mailbox && !flags.skip_mbox_check)
	return false;

	// When deleting messages fast it may happen that the same message
	// from the next page could be added many times, we prevent this here
	if (this.message_list.rows[uid])
	return false;

	if (!this.env.messages[uid])
	this.env.messages[uid] = {};

	// merge flags over local message object
	$.extend(this.env.messages[uid], {
	deleted: flags.deleted?1:0,
	replied: flags.answered?1:0,
	unread: !flags.seen?1:0,
	forwarded: flags.forwarded?1:0,
	flagged: flags.flagged?1:0,
	has_children: flags.has_children?1:0,
	depth: flags.depth?flags.depth:0,
	unread_children: flags.unread_children \|\| 0,
	flagged_children: flags.flagged_children \|\| 0,
	parent_uid: flags.parent_uid \|\| 0,
	selected: this.select_all_mode \|\| this.message_list.in_selection(uid),
	ml: flags.ml?1:0,
	ctype: flags.ctype,
	mbox: flags.mbox,
	// flags from plugins
	flags: flags.extra_flags
	});

	var c, n, col, html, css_class, label, status_class = '', status_label = '',
	tree = '', expando = '',
	list = this.message_list,
	rows = list.rows,
	message = this.env.messages[uid],
	msg_id = this.html_identifier(uid,true),
	row_class = 'message'
	+ (!flags.seen ? ' unread' : '')
	+ (flags.deleted ? ' deleted' : '')
	+ (flags.flagged ? ' flagged' : '')
	+ (message.selected ? ' selected' : ''),
	row = { cols:[], style:{}, id:'rcmrow'+msg_id, uid:uid };

	// message status icons
	css_class = 'msgicon';
	if (this.env.status_col === null) {
	css_class += ' status';
	if (flags.deleted) {
	status_class += ' deleted';
	status_label += this.get_label('deleted') + ' ';
	}
	else if (!flags.seen) {
	status_class += ' unread';
	status_label += this.get_label('unread') + ' ';
	}
	else if (flags.unread_children > 0) {
	status_class += ' unreadchildren';
	}
	}
	if (flags.answered) {
	status_class += ' replied';
	status_label += this.get_label('replied') + ' ';
	}
	if (flags.forwarded) {
	status_class += ' forwarded';
	status_label += this.get_label('forwarded') + ' ';
	}

	// update selection
	if (message.selected && !list.in_selection(uid))
	list.selection.push(uid);

	// threads
	if (this.env.threading) {
	if (message.depth) {
	// This assumes that div width is hardcoded to 15px,
	tree += '<span id="rcmtab' + msg_id + '" class="branch" style="width:' + (message.depth * 15) + 'px;">  </span>';

	if ((rows[message.parent_uid] && rows[message.parent_uid].expanded === false)
	\|\| ((this.env.autoexpand_threads == 0 \|\| this.env.autoexpand_threads == 2) &&
	(!rows[message.parent_uid] \|\| !rows[message.parent_uid].expanded))
	) {
	row.style.display = 'none';
	message.expanded = false;
	}
	else
	message.expanded = true;

	row_class += ' thread expanded';
	}
	else if (message.has_children) {
	if (message.expanded === undefined && (this.env.autoexpand_threads == 1 \|\| (this.env.autoexpand_threads == 2 && message.unread_children))) {
	message.expanded = true;
	}

	expando = '<div id="rcmexpando' + row.id + '" class="' + (message.expanded ? 'expanded' : 'collapsed') + '">  </div>';
	row_class += ' thread' + (message.expanded ? ' expanded' : '');
	}

	if (flags.unread_children && flags.seen && !message.expanded)
	row_class += ' unroot';

	if (flags.flagged_children && !message.expanded)
	row_class += ' flaggedroot';
	}

	tree += '<span id="msgicn'+row.id+'" class="'+css_class+status_class+'" title="'+status_label+'"></span>';
	row.className = row_class;

	// build subject link
	if (cols.subject) {
	var action = flags.mbox == this.env.drafts_mailbox ? 'compose' : 'show',
	uid_param = flags.mbox == this.env.drafts_mailbox ? '_draft_uid' : '_uid',
	query = { _mbox: flags.mbox };
	query[uid_param] = uid;
	cols.subject = '<a href="' + this.url(action, query) + '" onclick="return rcube_event.keyboard_only(event)"' +
	' onmouseover="rcube_webmail.long_subject_title(this,'+(message.depth+1)+')" tabindex="-1"><span>'+cols.subject+'</span></a>';
	}

	// add each submitted col
	for (n in this.env.listcols) {
	c = this.env.listcols[n];
	col = {className: String(c).toLowerCase(), events:{}};

	if (this.env.coltypes[c] && this.env.coltypes[c].hidden) {
	col.className += ' hidden';
	}

	if (c == 'flag') {
	css_class = (flags.flagged ? 'flagged' : 'unflagged');
	label = this.get_label(css_class);
	html = '<span id="flagicn'+row.id+'" class="'+css_class+'" title="'+label+'"></span>';
	}
	else if (c == 'attachment') {
	label = this.get_label('withattachment');
	if (flags.attachmentClass)
	html = '<span class="'+flags.attachmentClass+'" title="'+label+'"></span>';
	else if (/application\/\|multipart\/(m\|signed)/.test(flags.ctype))
	html = '<span class="attachment" title="'+label+'"></span>';
	else if (/multipart\/report/.test(flags.ctype))
	html = '<span class="report"></span>';
	else if (flags.ctype == 'multipart/encrypted' \|\| flags.ctype == 'application/pkcs7-mime')
	html = '<span class="encrypted"></span>';
	else
	html = ' ';
	}
	else if (c == 'status') {
	label = '';
	if (flags.deleted) {
	css_class = 'deleted';
	label = this.get_label('deleted');
	}
	else if (!flags.seen) {
	css_class = 'unread';
	label = this.get_label('unread');
	}
	else if (flags.unread_children > 0) {
	css_class = 'unreadchildren';
	}
	else
	css_class = 'msgicon';
	html = '<span id="statusicn'+row.id+'" class="'+css_class+status_class+'" title="'+label+'"></span>';
	}
	else if (c == 'threads')
	html = expando;
	else if (c == 'subject') {
	html = tree + cols[c];
	}
	else if (c == 'priority') {
	if (flags.prio > 0 && flags.prio < 6) {
	label = this.get_label('priority') + ' ' + flags.prio;
	html = '<span class="prio'+flags.prio+'" title="'+label+'"></span>';
	}
	else
	html = ' ';
	}
	else if (c == 'folder') {
	html = '<span onmouseover="rcube_webmail.long_subject_title(this)">' + cols[c] + '<span>';
	}
	else
	html = cols[c];

	col.innerHTML = html;
	row.cols.push(col);
	}

	if (this.env.layout == 'widescreen')
	row = this.widescreen_message_row(row, uid, message);

	list.insert_row(row, attop);

	// remove 'old' row
	if (attop && this.env.pagesize && list.rowcount > this.env.pagesize) {
	var uid = list.get_last_row();
	list.remove_row(uid);
	list.clear_selection(uid);
	}
	};

	// Converts standard message list record into "widescreen" (3-column) layout
	this.widescreen_message_row = function(row, uid, message)
	{
	var domrow = document.createElement('tr');

	domrow.id = row.id;
	domrow.uid = row.uid;
	domrow.className = row.className;
	if (row.style) $.extend(domrow.style, row.style);

	$.each(this.env.widescreen_list_template, function() {
	if (!ref.env.threading && this.className == 'threads')
	return;

	var i, n, e, col, domcol,
	domcell = document.createElement('td');

	if (this.className) domcell.className = this.className;

	for (i=0; this.cells && i < this.cells.length; i++) {
	for (n=0; row.cols && n < row.cols.length; n++) {
	if (this.cells[i] == row.cols[n].className) {
	col = row.cols[n];
	domcol = document.createElement('span');
	domcol.className = this.cells[i];
	if (this.className == 'subject' && domcol.className != 'subject')
	domcol.className += ' skip-on-drag';
	if (col.innerHTML)
	domcol.innerHTML = col.innerHTML;
	domcell.appendChild(domcol);
	break;
	}
	}
	}

	domrow.appendChild(domcell);
	});

	if (this.env.threading && message.depth) {
	n = this.calculate_thread_padding(message.depth);
	$('td.subject', domrow).attr('style', 'padding-left:' + n + ' !important');
	$('span.branch', domrow).remove();
	}

	return domrow;
	};

	this.calculate_thread_padding = function(level)
	{
	ref.env.thread_padding.match(/^([0-9.]+)(.+)/);
	return (Math.min(6, level) * parseFloat(RegExp.$1)) + RegExp.$2;
	};

	this.set_list_sorting = function(sort_col, sort_order)
	{
	var sort_old = this.env.sort_col == 'arrival' ? 'date' : this.env.sort_col,
	sort_new = sort_col == 'arrival' ? 'date' : sort_col;

	// set table header class
	$('#rcm' + sort_old).removeClass('sorted' + this.env.sort_order.toUpperCase());
	if (sort_new)
	$('#rcm' + sort_new).addClass('sorted' + sort_order);

	// if sorting by 'arrival' is selected, click on date column should not switch to 'date'
	$('#rcmdate > a').prop('rel', sort_col == 'arrival' ? 'arrival' : 'date');

	this.env.sort_col = sort_col;
	this.env.sort_order = sort_order;
	};

	this.set_list_options = function(cols, sort_col, sort_order, threads, layout)
	{
	var update, post_data = {};

	if (sort_col === undefined)
	sort_col = this.env.sort_col;
	if (!sort_order)
	sort_order = this.env.sort_order;

	if (this.env.sort_col != sort_col \|\| this.env.sort_order != sort_order) {
	update = 1;
	this.set_list_sorting(sort_col, sort_order);
	}

	if (this.env.threading != threads) {
	update = 1;
	post_data._threads = threads;
	}

	if (layout && this.env.layout != layout) {
	this.triggerEvent('layout-change', {old_layout: this.env.layout, new_layout: layout});
	update = 1;
	this.env.layout = post_data._layout = layout;
	}

	if (cols && cols.length) {
	// make sure new columns are added at the end of the list
	var i, idx, name, newcols = [], oldcols = this.env.listcols;
	for (i=0; i<oldcols.length; i++) {
	name = oldcols[i];
	idx = $.inArray(name, cols);
	if (idx != -1) {
	newcols.push(name);
	delete cols[idx];
	}
	}
	for (i=0; i<cols.length; i++)
	if (cols[i])
	newcols.push(cols[i]);

	if (newcols.join() != oldcols.join()) {
	update = 1;
	post_data._cols = newcols.join(',');
	}
	}

	if (update)
	this.list_mailbox('', '', sort_col+'_'+sort_order, post_data);
	};

	// when user double-clicks on a row
	this.show_message = function(id, safe, preview)
	{
	if (!id)
	return;

	var win, target = window,
	url = this.params_from_uid(id, {_caps: this.browser_capabilities()});

	if (preview && (win = this.get_frame_window(this.env.contentframe))) {
	target = win;
	url._framed = 1;
	}

	if (safe)
	url._safe = 1;

	// also send search request to get the right messages
	if (this.env.search_request)
	url._search = this.env.search_request;

	if (this.env.extwin)
	url._extwin = 1;

	url = this.url(preview ? 'preview': 'show', url);

	if (preview && String(target.location.href).indexOf(url) >= 0) {
	this.show_contentframe(true);
	}
	else {
	if (!preview && this.env.message_extwin && !this.env.extwin)
	this.open_window(url, true);
	else
	this.location_href(url, target, true);
	}
	};

	// update message status and unread counter after marking a message as read
	this.set_unread_message = function(id, folder)
	{
	var self = this;

	// find window with messages list
	if (!self.message_list)
	self = self.opener();

	if (!self && window.parent)
	self = parent.rcmail;

	if (!self \|\| !self.message_list)
	return;

	// this may fail in multifolder mode
	if (self.set_message(id, 'unread', false) === false)
	self.set_message(id + '-' + folder, 'unread', false);

	if (self.env.unread_counts[folder] > 0) {
	self.env.unread_counts[folder] -= 1;
	self.set_unread_count(folder, self.env.unread_counts[folder], folder == 'INBOX' && !self.is_multifolder_listing());
	}
	};

	this.show_contentframe = function(show)
	{
	var frame, win, name = this.env.contentframe;

	if (frame = this.get_frame_element(name)) {
	if (!show && (win = this.get_frame_window(name))) {
	if (win.location.href.indexOf(this.env.blankpage) < 0) {
	if (win.stop)
	win.stop();
	else // IE
	win.document.execCommand('Stop');

	win.location.href = this.env.blankpage;
	}
	}
	else if (!bw.safari && !bw.konq)
	$(frame)[show ? 'show' : 'hide']();
	}

	if (!show && this.env.frame_lock)
	this.set_busy(false, null, this.env.frame_lock);
	};

	this.get_frame_element = function(id)
	{
	var frame;

	if (id && (frame = document.getElementById(id)))
	return frame;
	};

	this.get_frame_window = function(id)
	{
	var frame = this.get_frame_element(id);

	if (frame && frame.name && window.frames)
	return window.frames[frame.name];
	};

	this.lock_frame = function()
	{
	if (!this.env.frame_lock)
	(this.is_framed() ? parent.rcmail : this).env.frame_lock = this.set_busy(true, 'loading');
	};

	// list a specific page
	this.list_page = function(page)
	{
	if (page == 'next')
	page = this.env.current_page+1;
	else if (page == 'last')
	page = this.env.pagecount;
	else if (page == 'prev' && this.env.current_page > 1)
	page = this.env.current_page-1;
	else if (page == 'first' && this.env.current_page > 1)
	page = 1;

	if (page > 0 && page <= this.env.pagecount) {
	this.env.current_page = page;

	if (this.task == 'addressbook' \|\| this.contact_list)
	this.list_contacts(this.env.source, this.env.group, page);
	else if (this.task == 'mail')
	this.list_mailbox(this.env.mailbox, page);
	}
	};

	// sends request to check for recent messages
	this.checkmail = function()
	{
	var lock = this.set_busy(true, 'checkingmail'),
	params = this.check_recent_params();

	this.http_post('check-recent', params, lock);
	};

	// list messages of a specific mailbox using filter
	this.filter_mailbox = function(filter)
	{
	if (this.filter_disabled)
	return;

	var params = this.search_params(false, filter),
	lock = this.set_busy(true, 'searching');

	this.clear_message_list();

	// reset vars
	this.env.current_page = 1;
	this.env.search_filter = filter;
	this.http_request('search', params, lock);
	this.update_state({_mbox: params._mbox, _filter: filter, _scope: params._scope});
	};

	// reload the current message listing
	this.refresh_list = function()
	{
	this.list_mailbox(this.env.mailbox, this.env.current_page \|\| 1, null, { _clear:1 }, true);
	if (this.message_list)
	this.message_list.clear_selection();
	};

	// list messages of a specific mailbox
	this.list_mailbox = function(mbox, page, sort, url, update_only)
	{
	var win, target = window;

	if (typeof url != 'object')
	url = {};

	if (!mbox)
	mbox = this.env.mailbox ? this.env.mailbox : 'INBOX';

	// add sort to url if set
	if (sort)
	url._sort = sort;

	// folder change, reset page, search scope, etc.
	if (this.env.mailbox != mbox) {
	page = 1;
	this.env.current_page = page;
	this.env.search_scope = 'base';
	this.select_all_mode = false;
	this.reset_search_filter();
	}
	// also send search request to get the right messages
	else if (this.env.search_request)
	url._search = this.env.search_request;

	if (!update_only) {
	// unselect selected messages and clear the list and message data
	this.clear_message_list();

	if (mbox != this.env.mailbox \|\| (mbox == this.env.mailbox && !page && !sort))
	url._refresh = 1;

	this.select_folder(mbox, '', true);
	this.unmark_folder(mbox, 'recent', '', true);
	this.env.mailbox = mbox;
	}

	// load message list remotely
	if (this.gui_objects.messagelist) {
	this.list_mailbox_remote(mbox, page, url);
	return;
	}

	if (win = this.get_frame_window(this.env.contentframe)) {
	target = win;
	url._framed = 1;
	}

	if (this.env.uid)
	url._uid = this.env.uid;

	// load message list to target frame/window
	if (mbox) {
	url._mbox = mbox;
	url._page = page;
	this.set_busy(true, 'loading');
	this.location_href(url, target);
	}
	};

	this.clear_message_list = function()
	{
	this.env.messages = {};

	this.show_contentframe(false);
	if (this.message_list)
	this.message_list.clear(true);
	};

	// send remote request to load message list
	this.list_mailbox_remote = function(mbox, page, url)
	{
	var lock = this.set_busy(true, 'loading');

	if (typeof url != 'object')
	url = {};

	url._layout = this.env.layout
	url._mbox = mbox;
	url._page = page;

	this.http_request('list', url, lock);
	this.update_state({ _mbox: mbox, _page: (page && page > 1 ? page : null) });
	};

	// removes messages that doesn't exists from list selection array
	this.update_selection = function()
	{
	var list = this.message_list,
	selected = list.selection,
	rows = list.rows,
	i, selection = [];

	for (i in selected)
	if (rows[selected[i]])
	selection.push(selected[i]);

	list.selection = selection;

	// reset preview frame, if currently previewed message is not selected (has been removed)
	try {
	var win = this.get_frame_window(this.env.contentframe),
	id = win.rcmail.env.uid;

	if (id && !list.in_selection(id))
	this.show_contentframe(false);
	}
	catch (e) {};
	};

	// expand all threads with unread children
	this.expand_unread = function()
	{
	var r, tbody = this.message_list.tbody,
	new_row = tbody.firstChild;

	while (new_row) {
	if (new_row.nodeType == 1 && (r = this.message_list.rows[new_row.uid]) && r.unread_children) {
	this.message_list.expand_all(r);
	this.set_unread_children(r.uid);
	}

	new_row = new_row.nextSibling;
	}

	return false;
	};

	// thread expanding/collapsing handler
	this.expand_message_row = function(e, uid)
	{
	var row = this.message_list.rows[uid];

	// handle unread_children/flagged_children mark
	row.expanded = !row.expanded;
	this.set_unread_children(uid);
	this.set_flagged_children(uid);
	row.expanded = !row.expanded;

	this.message_list.expand_row(e, uid);
	};

	// message list expanding
	this.expand_threads = function()
	{
	if (!this.env.threading \|\| !this.env.autoexpand_threads \|\| !this.message_list)
	return;

	switch (this.env.autoexpand_threads) {
	case 2: this.expand_unread(); break;
	case 1: this.message_list.expand_all(); break;
	}
	};

	// Initializes threads indicators/expanders after list update
	this.init_threads = function(roots, mbox)
	{
	// #1487752
	if (mbox && mbox != this.env.mailbox)
	return false;

	for (var n=0, len=roots.length; n<len; n++)
	this.add_tree_icons(roots[n]);
	this.expand_threads();
	};

	// adds threads tree icons to the list (or specified thread)
	this.add_tree_icons = function(root)
	{
	var i, l, r, n, len, pos, tmp = [], uid = [],
	row, rows = this.message_list.rows;

	if (root)
	row = rows[root] ? rows[root].obj : null;
	else
	row = this.message_list.tbody.firstChild;

	while (row) {
	if (row.nodeType == 1 && (r = rows[row.uid])) {
	if (r.depth) {
	for (i=tmp.length-1; i>=0; i--) {
	len = tmp[i].length;
	if (len > r.depth) {
	pos = len - r.depth;
	if (!(tmp[i][pos] & 2))
	tmp[i][pos] = tmp[i][pos] ? tmp[i][pos]+2 : 2;
	}
	else if (len == r.depth) {
	if (!(tmp[i][0] & 2))
	tmp[i][0] += 2;
	}
	if (r.depth > len)
	break;
	}

	tmp.push(new Array(r.depth));
	tmp[tmp.length-1][0] = 1;
	uid.push(r.uid);
	}
	else {
	if (tmp.length) {
	for (i in tmp) {
	this.set_tree_icons(uid[i], tmp[i]);
	}
	tmp = [];
	uid = [];
	}
	if (root && row != rows[root].obj)
	break;
	}
	}
	row = row.nextSibling;
	}

	if (tmp.length) {
	for (i in tmp) {
	this.set_tree_icons(uid[i], tmp[i]);
	}
	}
	};

	// adds tree icons to specified message row
	this.set_tree_icons = function(uid, tree)
	{
	var i, divs = [], html = '', len = tree.length;

	for (i=0; i<len; i++) {
	if (tree[i] > 2)
	divs.push({'class': 'l3', width: 15});
	else if (tree[i] > 1)
	divs.push({'class': 'l2', width: 15});
	else if (tree[i] > 0)
	divs.push({'class': 'l1', width: 15});
	// separator div
	else if (divs.length && !divs[divs.length-1]['class'])
	divs[divs.length-1].width += 15;
	else
	divs.push({'class': null, width: 15});
	}

	for (i=divs.length-1; i>=0; i--) {
	if (divs[i]['class'])
	html += '<div class="tree '+divs[i]['class']+'" />';
	else
	html += '<div style="width:'+divs[i].width+'px" />';
	}

	if (html)
	$('#rcmtab'+this.html_identifier(uid, true)).html(html);
	};

	// update parent in a thread
	this.update_thread_root = function(uid, flag)
	{
	if (!this.env.threading)
	return;

	var root = this.message_list.find_root(uid);

	if (uid == root)
	return;

	var p = this.message_list.rows[root];

	if (flag == 'read' && p.unread_children) {
	p.unread_children--;
	}
	else if (flag == 'unread' && p.has_children) {
	// unread_children may be undefined
	p.unread_children = (p.unread_children \|\| 0) + 1;
	}
	else if (flag == 'unflagged' && p.flagged_children) {
	p.flagged_children--;
	}
	else if (flag == 'flagged' && p.has_children) {
	p.flagged_children = (p.flagged_children \|\| 0) + 1;
	}
	else {
	return;
	}

	this.set_message_icon(root);
	this.set_unread_children(root);
	this.set_flagged_children(root);
	};

	// update thread indicators for all messages in a thread below the specified message
	// return number of removed/added root level messages
	this.update_thread = function(uid)
	{
	if (!this.env.threading \|\| !this.message_list.rows[uid])
	return 0;

	var r, parent, count = 0,
	list = this.message_list,
	rows = list.rows,
	row = rows[uid],
	depth = rows[uid].depth,
	roots = [];

	if (!row.depth) // root message: decrease roots count
	count--;

	// update unread_children for thread root
	if (row.depth && row.unread) {
	parent = list.find_root(uid);
	rows[parent].unread_children--;
	this.set_unread_children(parent);
	}

	// update unread_children for thread root
	if (row.depth && row.flagged) {
	parent = list.find_root(uid);
	rows[parent].flagged_children--;
	this.set_flagged_children(parent);
	}

	parent = row.parent_uid;

	// childrens
	row = row.obj.nextSibling;
	while (row) {
	if (row.nodeType == 1 && (r = rows[row.uid])) {
	if (!r.depth \|\| r.depth <= depth)
	break;

	r.depth--; // move left
	// reset width and clear the content of a tab, icons will be added later
	$('#rcmtab'+r.id).width(r.depth * 15).html('');
	if (!r.depth) { // a new root
	count++; // increase roots count
	r.parent_uid = 0;
	if (r.has_children) {
	// replace 'leaf' with 'collapsed'
	- $('#'+r.id+' .leaf:first')
	+ $('#' + r.id + ' .leaf').first()
	.attr('id', 'rcmexpando' + r.id)
	.attr('class', (r.obj.style.display != 'none' ? 'expanded' : 'collapsed'))
	.mousedown({uid: r.uid}, function(e) {
	return ref.expand_message_row(e, e.data.uid);
	});

	r.unread_children = 0;
	roots.push(r);
	}
	// show if it was hidden
	if (r.obj.style.display == 'none')
	$(r.obj).show();
	}
	else {
	if (r.depth == depth)
	r.parent_uid = parent;
	if (r.unread && roots.length)
	roots[roots.length-1].unread_children++;
	}
	}
	row = row.nextSibling;
	}

	// update unread_children/flagged_children for roots
	for (r=0; r<roots.length; r++) {
	this.set_unread_children(roots[r].uid);
	this.set_flagged_children(roots[r].uid);
	}

	return count;
	};

	this.delete_excessive_thread_rows = function()
	{
	var rows = this.message_list.rows,
	tbody = this.message_list.tbody,
	row = tbody.firstChild,
	cnt = this.env.pagesize + 1;

	while (row) {
	if (row.nodeType == 1 && (r = rows[row.uid])) {
	if (!r.depth && cnt)
	cnt--;

	if (!cnt)
	this.message_list.remove_row(row.uid);
	}
	row = row.nextSibling;
	}
	};

	// set message icon
	this.set_message_icon = function(uid)
	{
	var css_class, label = '',
	row = this.message_list.rows[uid];

	if (!row)
	return false;

	if (row.icon) {
	css_class = 'msgicon';
	if (row.deleted) {
	css_class += ' deleted';
	label += this.get_label('deleted') + ' ';
	}
	else if (row.unread) {
	css_class += ' unread';
	label += this.get_label('unread') + ' ';
	}
	else if (row.unread_children)
	css_class += ' unreadchildren';
	if (row.msgicon == row.icon) {
	if (row.replied) {
	css_class += ' replied';
	label += this.get_label('replied') + ' ';
	}
	if (row.forwarded) {
	css_class += ' forwarded';
	label += this.get_label('forwarded') + ' ';
	}
	css_class += ' status';
	}

	$(row.icon).attr('class', css_class).attr('title', label);
	}

	if (row.msgicon && row.msgicon != row.icon) {
	label = '';
	css_class = 'msgicon';
	if (!row.unread && row.unread_children) {
	css_class += ' unreadchildren';
	}
	if (row.replied) {
	css_class += ' replied';
	label += this.get_label('replied') + ' ';
	}
	if (row.forwarded) {
	css_class += ' forwarded';
	label += this.get_label('forwarded') + ' ';
	}

	$(row.msgicon).attr('class', css_class).attr('title', label);
	}

	if (row.flagicon) {
	css_class = (row.flagged ? 'flagged' : 'unflagged');
	label = this.get_label(css_class);
	$(row.flagicon).attr('class', css_class)
	.attr('aria-label', label)
	.attr('title', label);
	}
	};

	// set message status
	this.set_message_status = function(uid, flag, status)
	{
	var row = this.message_list.rows[uid];

	if (!row)
	return false;

	if (flag == 'unread') {
	if (row.unread != status)
	this.update_thread_root(uid, status ? 'unread' : 'read');
	}
	else if (flag == 'flagged') {
	this.update_thread_root(uid, status ? 'flagged' : 'unflagged');
	}

	if ($.inArray(flag, ['unread', 'deleted', 'replied', 'forwarded', 'flagged']) > -1)
	row[flag] = status;
	};

	// set message row status, class and icon
	this.set_message = function(uid, flag, status)
	{
	var row = this.message_list && this.message_list.rows[uid];

	if (!row)
	return false;

	if (flag)
	this.set_message_status(uid, flag, status);

	if ($.inArray(flag, ['unread', 'deleted', 'flagged']) > -1)
	$(row.obj)[row[flag] ? 'addClass' : 'removeClass'](flag);

	this.set_unread_children(uid);
	this.set_message_icon(uid);
	};

	// sets unroot (unread_children) class of parent row
	this.set_unread_children = function(uid)
	{
	var row = this.message_list.rows[uid];

	if (row.parent_uid)
	return;

	var enable = !row.unread && row.unread_children && !row.expanded;
	$(row.obj)[enable ? 'addClass' : 'removeClass']('unroot');
	};

	// sets flaggedroot (flagged_children) class of parent row
	this.set_flagged_children = function(uid)
	{
	var row = this.message_list.rows[uid];

	if (row.parent_uid)
	return;

	var enable = row.flagged_children && !row.expanded;
	$(row.obj)[enable ? 'addClass' : 'removeClass']('flaggedroot');
	};

	// copy selected messages to the specified mailbox
	this.copy_messages = function(mbox, event, uids)
	{
	if (mbox && typeof mbox === 'object') {
	mbox = mbox.id;
	}
	else if (!mbox) {
	uids = this.env.uid ? [this.env.uid] : this.message_list.get_selection();
	return this.folder_selector(event, function(folder) {
	ref.copy_messages(folder, null, uids);
	});
	}

	// exit if current or no mailbox specified
	if (!mbox \|\| mbox == this.env.mailbox)
	return;

	var post_data = this.selection_post_data({_target_mbox: mbox, _uid: uids});

	// exit if selection is empty
	if (!post_data._uid)
	return;

	// send request to server
	this.http_post('copy', post_data, this.display_message('copyingmessage', 'loading'));
	};

	// move selected messages to the specified mailbox
	this.move_messages = function(mbox, event, uids)
	{
	if (mbox && typeof mbox === 'object') {
	mbox = mbox.id;
	}
	else if (!mbox) {
	uids = this.env.uid ? [this.env.uid] : this.message_list.get_selection();
	return this.folder_selector(event, function(folder) {
	ref.move_messages(folder, null, uids);
	});
	}

	// exit if current or no mailbox specified
	if (!mbox \|\| (mbox == this.env.mailbox && !this.is_multifolder_listing()))
	return;

	var lock = false, post_data = this.selection_post_data({_target_mbox: mbox, _uid: uids});

	// exit if selection is empty
	if (!post_data._uid)
	return;

	// show wait message
	if (this.env.action == 'show')
	lock = this.set_busy(true, 'movingmessage');
	else
	this.show_contentframe(false);

	// Hide message command buttons until a message is selected
	this.enable_command(this.env.message_commands, false);

	this.with_selected_messages('move', post_data, lock);
	};

	// delete selected messages from the current mailbox
	this.delete_messages = function(event)
	{
	var list = this.message_list, trash = this.env.trash_mailbox;

	// if config is set to flag for deletion
	if (this.env.flag_for_deletion) {
	this.mark_message('delete');
	return false;
	}
	// if there isn't a defined trash mailbox or we are in it
	else if (!trash \|\| this.env.mailbox == trash)
	this.permanently_remove_messages();
	// we're in Junk folder and delete_junk is enabled
	else if (this.env.delete_junk && this.env.junk_mailbox && this.env.mailbox == this.env.junk_mailbox)
	this.permanently_remove_messages();
	// if there is a trash mailbox defined and we're not currently in it
	else {
	// if shift was pressed delete it immediately
	if ((list && list.modkey == SHIFT_KEY) \|\| (event && rcube_event.get_modifier(event) == SHIFT_KEY)) {
	this.confirm_dialog(this.get_label('deletemessagesconfirm'), 'delete', function() {
	ref.permanently_remove_messages();
	});
	}
	else
	this.move_messages(trash);
	}

	return true;
	};

	// delete the selected messages permanently
	this.permanently_remove_messages = function()
	{
	var post_data = this.selection_post_data();

	// exit if selection is empty
	if (!post_data._uid)
	return;

	this.show_contentframe(false);
	this.with_selected_messages('delete', post_data);
	};

	// Send a specific move/delete request with UIDs of all selected messages
	this.with_selected_messages = function(action, post_data, lock, http_action)
	{
	var count = 0, msg,
	remove = (action == 'delete' \|\| !this.is_multifolder_listing());

	// update the list (remove rows, clear selection)
	if (this.message_list) {
	var n, len, id, root, roots = [],
	selection = post_data._uid;

	if (selection === '*')
	selection = this.message_list.get_selection();
	else if (typeof selection == 'string')
	selection = selection.split(',');

	for (n=0, len=selection.length; n<len; n++) {
	id = selection[n];

	if (this.env.threading) {
	count += this.update_thread(id);
	root = this.message_list.find_root(id);
	if (root != id && $.inArray(root, roots) < 0) {
	roots.push(root);
	}
	}
	if (remove)
	this.message_list.remove_row(id, (this.env.display_next && n == selection.length-1));
	}
	// make sure there are no selected rows
	if (!this.env.display_next && remove)
	this.message_list.clear_selection();
	// update thread tree icons
	for (n=0, len=roots.length; n<len; n++) {
	this.add_tree_icons(roots[n]);
	}
	}

	if (count < 0)
	post_data._count = (count*-1);
	// remove threads from the end of the list
	else if (count > 0 && remove)
	this.delete_excessive_thread_rows();

	if (!remove)
	post_data._refresh = 1;

	if (!lock) {
	msg = action == 'move' ? 'movingmessage' : 'deletingmessage';
	lock = this.display_message(msg, 'loading');
	}

	// send request to server
	this.http_post(http_action \|\| action, post_data, lock);
	};

	// build post data for message delete/move/copy/flag requests
	this.selection_post_data = function(data)
	{
	if (typeof(data) != 'object')
	data = {};

	if (!data._uid)
	data._uid = this.env.uid ? [this.env.uid] : this.message_list.get_selection();

	data._mbox = this.env.mailbox;
	data._uid = this.uids_to_list(data._uid);

	if (this.env.action)
	data._from = this.env.action;

	// also send search request to get the right messages
	if (this.env.search_request)
	data._search = this.env.search_request;

	if (this.env.display_next && this.env.next_uid)
	data._next_uid = this.env.next_uid;

	return data;
	};

	// set a specific flag to one or more messages
	this.mark_message = function(flag, uid)
	{
	var a_uids = [], r_uids = [], len, n, id,
	list = this.message_list;

	if (uid)
	a_uids[0] = uid;
	else if (this.env.uid)
	a_uids[0] = this.env.uid;
	else if (list)
	a_uids = list.get_selection();

	if (!list)
	r_uids = a_uids;
	else {
	list.focus();
	for (n=0, len=a_uids.length; n<len; n++) {
	id = a_uids[n];
	if ((flag == 'read' && list.rows[id].unread)
	\|\| (flag == 'unread' && !list.rows[id].unread)
	\|\| (flag == 'delete' && !list.rows[id].deleted)
	\|\| (flag == 'undelete' && list.rows[id].deleted)
	\|\| (flag == 'flagged' && !list.rows[id].flagged)
	\|\| (flag == 'unflagged' && list.rows[id].flagged))
	{
	r_uids.push(id);
	}
	}
	}

	// nothing to do
	if (!r_uids.length && !this.select_all_mode)
	return;

	switch (flag) {
	case 'read':
	case 'unread':
	this.toggle_read_status(flag, r_uids);
	break;
	case 'delete':
	case 'undelete':
	this.toggle_delete_status(r_uids);
	break;
	case 'flagged':
	case 'unflagged':
	this.toggle_flagged_status(flag, a_uids);
	break;
	}
	};

	// set class to read/unread
	this.toggle_read_status = function(flag, a_uids)
	{
	var i, len = a_uids.length,
	post_data = this.selection_post_data({_uid: this.uids_to_list(a_uids), _flag: flag}),
	lock = this.display_message('markingmessage', 'loading');

	// mark all message rows as read/unread
	for (i=0; i<len; i++)
	this.set_message(a_uids[i], 'unread', (flag == 'unread' ? true : false));

	this.http_post('mark', post_data, lock);
	};

	// set image to flagged or unflagged
	this.toggle_flagged_status = function(flag, a_uids)
	{
	var i, len = a_uids.length,
	win = this.env.contentframe ? this.get_frame_window(this.env.contentframe) : window,
	post_data = this.selection_post_data({_uid: this.uids_to_list(a_uids), _flag: flag}),
	lock = this.display_message('markingmessage', 'loading');

	// mark all message rows as flagged/unflagged
	for (i=0; i<len; i++)
	this.set_message(a_uids[i], 'flagged', (flag == 'flagged' ? true : false));

	$(win.document.body)[flag == 'flagged' ? 'addClass' : 'removeClass']('status-flagged');

	this.http_post('mark', post_data, lock);
	};

	// mark all message rows as deleted/undeleted
	this.toggle_delete_status = function(a_uids)
	{
	var i, uid, all_deleted = true,
	len = a_uids.length,
	rows = this.message_list ? this.message_list.rows : {};

	if (len == 1) {
	if (!this.message_list \|\| (rows[a_uids[0]] && !rows[a_uids[0]].deleted))
	this.flag_as_deleted(a_uids);
	else
	this.flag_as_undeleted(a_uids);

	return true;
	}

	for (i=0; i<len; i++) {
	uid = a_uids[i];
	if (rows[uid] && !rows[uid].deleted) {
	all_deleted = false;
	break;
	}
	}

	if (all_deleted)
	this.flag_as_undeleted(a_uids);
	else
	this.flag_as_deleted(a_uids);

	return true;
	};

	this.flag_as_undeleted = function(a_uids)
	{
	var i, len = a_uids.length,
	post_data = this.selection_post_data({_uid: this.uids_to_list(a_uids), _flag: 'undelete'}),
	lock = this.display_message('markingmessage', 'loading');

	for (i=0; i<len; i++)
	this.set_message(a_uids[i], 'deleted', false);

	this.http_post('mark', post_data, lock);
	};

	this.flag_as_deleted = function(a_uids)
	{
	var r_uids = [],
	post_data = this.selection_post_data({_uid: this.uids_to_list(a_uids), _flag: 'delete'}),
	lock = this.display_message('markingmessage', 'loading'),
	list = this.message_list,
	rows = list ? list.rows : {},
	count = 0;

	for (var i=0, len=a_uids.length; i<len; i++) {
	uid = a_uids[i];
	if (rows[uid]) {
	if (rows[uid].unread)
	r_uids[r_uids.length] = uid;

	if (this.env.skip_deleted) {
	count += this.update_thread(uid);
	list.remove_row(uid, (this.env.display_next && i == list.get_selection(false).length-1));
	}
	else
	this.set_message(uid, 'deleted', true);
	}
	}

	// make sure there are no selected rows
	if (this.env.skip_deleted && list) {
	if (!this.env.display_next \|\| !list.rowcount)
	list.clear_selection();
	if (count < 0)
	post_data._count = (count*-1);
	else if (count > 0)
	// remove threads from the end of the list
	this.delete_excessive_thread_rows();
	}

	// set of messages to mark as seen
	if (r_uids.length)
	post_data._ruid = this.uids_to_list(r_uids);

	if (this.env.skip_deleted && this.env.display_next && this.env.next_uid)
	post_data._next_uid = this.env.next_uid;

	this.http_post('mark', post_data, lock);
	};

	// flag as read without mark request (called from backend)
	// argument should be a coma-separated list of uids
	this.flag_deleted_as_read = function(uids)
	{
	var uid, i, len,
	rows = this.message_list ? this.message_list.rows : {};

	if (typeof uids == 'string')
	uids = uids.split(',');

	for (i=0, len=uids.length; i<len; i++) {
	uid = uids[i];
	if (rows[uid])
	this.set_message(uid, 'unread', false);
	}
	};

	// Converts array of message UIDs to comma-separated list for use in URL
	// with select_all mode checking
	this.uids_to_list = function(uids)
	{
	return this.select_all_mode ? '*' : ($.isArray(uids) ? uids.join(',') : uids);
	};

	// Sets title of the delete button
	this.set_button_titles = function()
	{
	var label = 'deletemessage';

	if (!this.env.flag_for_deletion
	&& this.env.trash_mailbox && this.env.mailbox != this.env.trash_mailbox
	&& (!this.env.delete_junk \|\| !this.env.junk_mailbox \|\| this.env.mailbox != this.env.junk_mailbox)
	)
	label = 'movemessagetotrash';

	this.set_alttext('delete', label);
	};

	// Initialize input element for list page jump
	this.init_pagejumper = function(element)
	{
	$(element).addClass('rcpagejumper')
	.on('focus', function(e) {
	// create and display popup with page selection
	var i, html = '';

	for (i = 1; i <= ref.env.pagecount; i++)
	html += '<li>' + i + '</li>';

	html = '<ul class="toolbarmenu">' + html + '</ul>';

	if (!ref.pagejump) {
	ref.pagejump = $('<div id="pagejump-selector" class="popupmenu"></div>')
	.appendTo(document.body)
	.on('click', 'li', function() {
	if (!ref.busy)
	$(element).val($(this).text()).change();
	});
	}

	if (ref.pagejump.data('count') != i)
	ref.pagejump.html(html);

	ref.pagejump.attr('rel', '#' + this.id).data('count', i);

	// display page selector
	ref.show_menu('pagejump-selector', true, e);
	$(this).keydown();
	})
	// keyboard navigation
	.on('keydown keyup click', function(e) {
	var current, selector = $('#pagejump-selector'),
	ul = $('ul', selector),
	list = $('li', ul),
	height = ul.height(),
	p = parseInt(this.value);

	if (e.which != 27 && e.which != 9 && e.which != 13 && !selector.is(':visible'))
	return ref.show_menu('pagejump-selector', true, e);

	if (e.type == 'keydown') {
	// arrow-down
	if (e.which == 40) {
	if (list.length > p)
	this.value = (p += 1);
	}
	// arrow-up
	else if (e.which == 38) {
	if (p > 1 && list.length > p - 1)
	this.value = (p -= 1);
	}
	// enter
	else if (e.which == 13) {
	return $(this).change();
	}
	// esc, tab
	else if (e.which == 27 \|\| e.which == 9) {
	ref.hide_menu('pagejump-selector', e);
	return $(element).val(ref.env.current_page);
	}
	}

	$('li.selected', ul).removeClass('selected');

	if ((current = $(list[p - 1])).length) {
	current.addClass('selected');
	$('#pagejump-selector').scrollTop(((ul.height() / list.length) * (p - 1)) - selector.height() / 2);
	}
	})
	.on('change', function(e) {
	// go to specified page
	var p = parseInt(this.value);
	if (p && p != ref.env.current_page && !ref.busy) {
	ref.hide_menu('pagejump-selector', e);
	ref.list_page(p);
	}
	});
	};

	// Update page-jumper state on list updates
	this.update_pagejumper = function()
	{
	$('input.rcpagejumper').val(this.env.current_page).prop('disabled', this.env.pagecount < 2);
	};

	// check for mailvelope API
	this.check_mailvelope = function(action)
	{
	if (typeof window.mailvelope !== 'undefined') {
	this.mailvelope_load(action);
	}
	else {
	$(window).on('mailvelope', function() {
	ref.mailvelope_load(action);
	});
	}
	};

	// Load Mailvelope functionality (and initialize keyring if needed)
	this.mailvelope_load = function(action)
	{
	if (this.env.browser_capabilities)
	this.env.browser_capabilities['pgpmime'] = 1;

	var keyring = this.env.user_id,
	fn = function(kr) {
	ref.mailvelope_keyring = kr;
	ref.mailvelope_init(action, kr);
	};

	mailvelope.getVersion().then(function(v) {
	mailvelope.VERSION = v;
	mailvelope.VERSION_MAJOR = Math.floor(parseFloat(v));
	return mailvelope.getKeyring(keyring);
	}).then(fn, function(err) {
	// attempt to create a new keyring for this app/user
	mailvelope.createKeyring(keyring).then(fn, function(err) {
	console.error(err);
	});
	});
	};

	// Initializes Mailvelope editor or display container
	this.mailvelope_init = function(action, keyring)
	{
	if (!window.mailvelope)
	return;

	if (action == 'show' \|\| action == 'preview' \|\| action == 'print') {
	// decrypt text body
	if (this.env.is_pgp_content) {
	var data = $(this.env.is_pgp_content).text();
	ref.mailvelope_display_container(this.env.is_pgp_content, data, keyring);
	}
	// load pgp/mime message and pass it to the mailvelope display container
	else if (this.env.pgp_mime_part) {
	var msgid = this.display_message('loadingdata', 'loading'),
	selector = this.env.pgp_mime_container;

	$.ajax({
	type: 'GET',
	url: this.url('get', { '_mbox': this.env.mailbox, '_uid': this.env.uid, '_part': this.env.pgp_mime_part }),
	error: function(o, status, err) {
	ref.http_error(o, status, err, msgid);
	},
	success: function(data) {
	ref.mailvelope_display_container(selector, data, keyring, msgid);
	}
	});
	}
	}
	else if (action == 'compose') {
	this.env.compose_commands.push('compose-encrypted');

	var sign_supported = mailvelope.VERSION_MAJOR >= 2;
	var is_html = $('[name="_is_html"]').val() > 0;

	if (sign_supported)
	this.env.compose_commands.push('compose-encrypted-signed');

	if (this.env.pgp_mime_message) {
	// fetch PGP/Mime part and open load into Mailvelope editor
	var lock = this.set_busy(true, this.get_label('loadingdata'));

	$.ajax({
	type: 'GET',
	url: this.url('get', this.env.pgp_mime_message),
	error: function(o, status, err) {
	ref.http_error(o, status, err, lock);
	ref.enable_command('compose-encrypted', !is_html);
	if (sign_supported)
	ref.enable_command('compose-encrypted-signed', !is_html);
	},
	success: function(data) {
	ref.set_busy(false, null, lock);

	if (is_html) {
	ref.command('toggle-editor', {html: false, noconvert: true});
	$('#' + ref.env.composebody).val('');
	}

	ref.compose_encrypted({ quotedMail: data });
	ref.enable_command('compose-encrypted', true);
	ref.enable_command('compose-encrypted-signed', false);
	}
	});
	}
	else {
	// enable encrypted compose toggle
	this.enable_command('compose-encrypted', !is_html);
	if (sign_supported)
	this.enable_command('compose-encrypted-signed', !is_html);
	}

	// make sure to disable encryption button after toggling editor into HTML mode
	this.addEventListener('actionafter', function(args) {
	if (args.ret && args.action == 'toggle-editor') {
	ref.enable_command('compose-encrypted', !args.props.html);
	if (sign_supported)
	ref.enable_command('compose-encrypted-signed', !args.props.html);
	}
	});
	} else if (action == 'edit-identity') {
	ref.mailvelope_identity_keygen();
	}
	};

	// handler for the 'compose-encrypted-signed' command
	this.compose_encrypted_signed = function(props)
	{
	props = props \|\| {};
	props.signMsg = true;
	this.compose_encrypted(props);
	};

	// handler for the 'compose-encrypted' command
	this.compose_encrypted = function(props)
	{
	var options, container = $('#' + this.env.composebody).parent();

	// remove Mailvelope editor if active
	if (ref.mailvelope_editor) {
	ref.mailvelope_editor = null;
	ref.compose_skip_unsavedcheck = false;
	ref.set_button('compose-encrypted', 'act');

	container.removeClass('mailvelope')
	.find('iframe:not([aria-hidden=true])').remove();
	$('#' + ref.env.composebody).show();
	$("[name='_pgpmime']").remove();

	// disable commands that operate on the compose body
	ref.enable_command('spellcheck', 'insert-sig', 'toggle-editor', 'insert-response', 'save-response', true);
	ref.triggerEvent('compose-encrypted', { active:false });
	}
	// embed Mailvelope editor container
	else {
	if (this.spellcheck_state())
	this.editor.spellcheck_stop();

	if (props.quotedMail) {
	options = { quotedMail: props.quotedMail, quotedMailIndent: false };
	}
	else {
	options = { predefinedText: $('#' + this.env.composebody).val() };
	}

	if (props.signMsg) {
	options.signMsg = props.signMsg;
	}

	if (this.env.compose_mode == 'reply') {
	options.quotedMailIndent = true;
	options.quotedMailHeader = this.env.compose_reply_header;
	}

	mailvelope.createEditorContainer('#' + container.attr('id'), ref.mailvelope_keyring, options).then(function(editor) {
	ref.mailvelope_editor = editor;
	ref.compose_skip_unsavedcheck = true;
	ref.set_button('compose-encrypted', 'sel');

	container.addClass('mailvelope');
	$('#' + ref.env.composebody).hide();

	// disable commands that operate on the compose body
	ref.enable_command('spellcheck', 'insert-sig', 'toggle-editor', 'insert-response', 'save-response', false);
	ref.triggerEvent('compose-encrypted', { active:true });

	// notify user about loosing attachments
	if (ref.env.attachments && !$.isEmptyObject(ref.env.attachments)) {
	ref.alert_dialog(ref.get_label('encryptnoattachments'));

	$.each(ref.env.attachments, function(name, attach) {
	ref.remove_from_attachment_list(name);
	});
	}
	}, function(err) {
	console.error(err);
	console.log(options);
	});
	}
	};

	// callback to replace the message body with the full armored
	this.mailvelope_submit_messageform = function(draft, saveonly)
	{
	// get recipients
	var recipients = [];
	$.each(['to', 'cc', 'bcc'], function(i,field) {
	var pos, rcpt, val = $.trim($('[name="_' + field + '"]').val());
	while (val.length && rcube_check_email(val, true)) {
	rcpt = RegExp.$2;
	recipients.push(rcpt);
	val = val.substr(val.indexOf(rcpt) + rcpt.length + 1).replace(/^\s,\s/, '');
	}
	});

	// check if we have keys for all recipients
	var isvalid = recipients.length > 0;
	ref.mailvelope_keyring.validKeyForAddress(recipients).then(function(status) {
	var missing_keys = [];
	$.each(status, function(k,v) {
	if (v === false) {
	isvalid = false;
	missing_keys.push(k);
	}
	});

	// list recipients with missing keys
	if (!isvalid && missing_keys.length) {
	// display dialog with missing keys
	ref.simple_dialog(
	ref.get_label('nopubkeyfor').replace('$email', missing_keys.join(', ')) +
	'<p>' + ref.get_label('searchpubkeyservers') + '</p>',
	'encryptedsendialog',
	function() {
	ref.mailvelope_search_pubkeys(missing_keys, function() {
	return true; // close dialog
	});
	},
	{button: 'search'}
	);
	return false;
	}

	if (!isvalid) {
	if (!recipients.length) {
	ref.alert_dialog(ref.get_label('norecipientwarning'), function() {
	$("[name='_to']").focus();
	});
	}
	return false;
	}

	// add sender identity to recipients to be able to decrypt our very own message
	var senders = [], selected_sender = ref.env.identities[$("[name='_from'] option:selected").val()];
	$.each(ref.env.identities, function(k, sender) {
	senders.push(sender.email);
	});

	ref.mailvelope_keyring.validKeyForAddress(senders).then(function(status) {
	valid_sender = null;
	$.each(status, function(k,v) {
	if (v !== false) {
	valid_sender = k;
	if (valid_sender == selected_sender) {
	return false; // break
	}
	}
	});

	if (!valid_sender) {
	if (!confirm(ref.get_label('nopubkeyforsender'))) {
	return false;
	}
	}

	recipients.push(valid_sender);

	ref.mailvelope_editor.encrypt(recipients).then(function(armored) {
	// all checks passed, send message
	var form = ref.gui_objects.messageform,
	hidden = $("[name='_pgpmime']", form),
	msgid = ref.set_busy(true, draft \|\| saveonly ? 'savingmessage' : 'sendingmessage');

	form.target = ref.get_save_target();
	form._draft.value = draft ? '1' : '';
	form.action = ref.add_url(form.action, '_unlock', msgid);
	form.action = ref.add_url(form.action, '_framed', 1);

	if (saveonly) {
	form.action = ref.add_url(form.action, '_saveonly', 1);
	}

	// send pgp conent via hidden field
	if (!hidden.length) {
	hidden = $('<input type="hidden" name="_pgpmime">').appendTo(form);
	}
	hidden.val(armored);

	form.submit();

	}, function(err) {
	console.log(err);
	}); // mailvelope_editor.encrypt()

	}, function(err) {
	console.error(err);
	}); // mailvelope_keyring.validKeyForAddress(senders)

	}, function(err) {
	console.error(err);
	}); // mailvelope_keyring.validKeyForAddress(recipients)

	return false;
	};

	// wrapper for the mailvelope.createDisplayContainer API call
	this.mailvelope_display_container = function(selector, data, keyring, msgid)
	{
	var error_handler = function(error) {
	// remove mailvelope frame with the error message
	$(selector + ' > iframe').remove();
	ref.hide_message(msgid);
	ref.display_message(error.message, 'error');
	};

	mailvelope.createDisplayContainer(selector, data, keyring, { showExternalContent: this.env.safemode }).then(function(status) {
	if (status.error && status.error.message) {
	return error_handler(status.error);
	}

	ref.hide_message(msgid);
	$(selector).addClass('mailvelope').children().not('iframe').hide();

	// on success we can remove encrypted part from the attachments list
	if (ref.env.pgp_mime_part)
	$('#attach' + ref.env.pgp_mime_part).remove();

	setTimeout(function() { $(window).resize(); }, 10);
	}, error_handler);
	};

	// subroutine to query keyservers for public keys
	this.mailvelope_search_pubkeys = function(emails, resolve, import_handler)
	{
	// query with publickey.js
	var deferreds = [],
	pk = new PublicKey(),
	lock = ref.display_message('', 'loading');

	$.each(emails, function(i, email) {
	var d = $.Deferred();
	pk.search(email, function(results, errorCode) {
	if (errorCode !== null) {
	// rejecting would make all fail
	// d.reject(email);
	d.resolve([email]);
	}
	else {
	d.resolve([email].concat(results));
	}
	});
	deferreds.push(d);
	});

	$.when.apply($, deferreds).then(function() {
	var missing_keys = [],
	key_selection = [];

	// alanyze results of all queries
	$.each(arguments, function(i, result) {
	var email = result.shift();
	if (!result.length) {
	missing_keys.push(email);
	}
	else {
	key_selection = key_selection.concat(result);
	}
	});

	ref.hide_message(lock);
	resolve(true);

	// show key import dialog
	if (key_selection.length) {
	ref.mailvelope_key_import_dialog(key_selection, import_handler);
	}
	// some keys could not be found
	if (missing_keys.length) {
	ref.display_message(ref.get_label('nopubkeyfor').replace('$email', missing_keys.join(', ')), 'warning');
	}
	}).fail(function() {
	console.error('Pubkey lookup failed with', arguments);
	ref.hide_message(lock);
	ref.display_message('pubkeysearcherror', 'error');
	resolve(false);
	});
	};

	// list the given public keys in a dialog with options to import
	// them into the local Maivelope keyring
	this.mailvelope_key_import_dialog = function(candidates, import_handler)
	{
	var ul = $('<div>').addClass('listing pgpkeyimport');

	$.each(candidates, function(i, keyrec) {
	var li = $('<div>').addClass('key');

	if (keyrec.revoked) li.addClass('revoked');
	if (keyrec.disabled) li.addClass('disabled');
	if (keyrec.expired) li.addClass('expired');

	li.append($('<label>').addClass('keyid').text(ref.get_label('keyid')));
	li.append($('<a>').text(keyrec.keyid.substr(-8).toUpperCase())
	.attr('href', keyrec.info)
	.attr('target', '_blank')
	.attr('tabindex', '-1'));

	li.append($('<label>').addClass('keylen').text(ref.get_label('keylength')));
	li.append($('<span>').text(keyrec.keylen));

	if (keyrec.expirationdate) {
	li.append($('<label>').addClass('keyexpired').text(ref.get_label('keyexpired')));
	li.append($('<span>').text(new Date(keyrec.expirationdate * 1000).toDateString()));
	}

	if (keyrec.revoked) {
	li.append($('<span>').addClass('keyrevoked').text(ref.get_label('keyrevoked')));
	}

	var ul_ = $('<ul>').addClass('uids');
	$.each(keyrec.uids, function(j, uid) {
	var li_ = $('<li>').addClass('uid');
	if (uid.revoked) li_.addClass('revoked');
	if (uid.disabled) li_.addClass('disabled');
	if (uid.expired) li_.addClass('expired');

	ul_.append(li_.text(uid.uid));
	});

	li.append(ul_);
	li.append($('<button>')
	.attr('rel', keyrec.keyid)
	.text(ref.get_label('import'))
	.addClass('button import importkey')
	.prop('disabled', keyrec.revoked \|\| keyrec.disabled \|\| keyrec.expired));

	ul.append(li);
	});

	// display dialog with missing keys
	ref.simple_dialog(
	$('<div>')
	.append($('<p>').html(ref.get_label('encryptpubkeysfound')))
	.append(ul),
	ref.get_label('importpubkeys'),
	null,
	{cancel_label: 'close', cancel_button: 'close'}
	);

	// delegate handler for import button clicks
	ul.on('click', 'button.importkey', function() {
	var btn = $(this),
	keyid = btn.attr('rel'),
	pk = new PublicKey(),
	lock = ref.display_message('', 'loading');

	// fetch from keyserver and import to Mailvelope keyring
	pk.get(keyid, function(armored, errorCode) {
	ref.hide_message(lock);

	if (errorCode) {
	ref.display_message('keyservererror', 'error');
	return;
	}

	if (import_handler) {
	import_handler(armored);
	return;
	}

	// import to keyring
	ref.mailvelope_keyring.importPublicKey(armored).then(function(status) {
	if (status === 'REJECTED') {
	// ref.alert_dialog(ref.get_label('Key import was rejected'));
	}
	else {
	var $key = keyid.substr(-8).toUpperCase();
	btn.closest('.key').fadeOut();
	ref.display_message(ref.get_label('keyimportsuccess').replace('$key', $key), 'confirmation');
	}
	}, function(err) {
	console.log(err);
	});
	});
	});
	};

	// enable key management for identity
	this.mailvelope_identity_keygen = function()
	{
	var container = $(this.gui_objects.editform).find('.identity-encryption').first();
	var identity_email = $.trim($(this.gui_objects.editform).find('.ff_email').val());

	if (!container.length \|\| !identity_email \|\| !this.mailvelope_keyring.createKeyGenContainer)
	return;

	var key_fingerprint;
	this.mailvelope_keyring.validKeyForAddress([identity_email])
	.then(function(keys) {
	var private_keys = [];

	if (keys && keys[identity_email] && Array.isArray(keys[identity_email].keys)) {
	var checks = [];
	for (var j=0; j < keys[identity_email].keys.length; j++) {
	checks.push((function(key) {
	return ref.mailvelope_keyring.hasPrivateKey(key.fingerprint)
	.then(function(found) {
	if (found) {
	private_keys.push(key);
	}
	});
	})(keys[identity_email].keys[j]));
	}
	return Promise.all(checks)
	.then(function() {
	return private_keys;
	});
	}

	return private_keys;
	}).then(function(private_keys) {
	var content = container.find('.identity-encryption-block').empty();
	if (private_keys && private_keys.length) {
	// show private key information
	$('<p>').text(ref.get_label('encryptionprivkeysinmailvelope').replace('$nr', private_keys.length)).appendTo(content);
	var ul = $('<ul>').addClass('keylist').appendTo(content);
	$.each(private_keys, function(i, key) {
	$('<li>').appendTo(ul)
	.append($('<strong>').addClass('fingerprint').text(String(key.fingerprint).toUpperCase()))
	.append($('<span>').addClass('identity').text('<' + identity_email + '> '));
	});
	} else {
	$('<p>').text(ref.get_label('encryptionnoprivkeysinmailvelope')).appendTo(content);
	}

	// show button to create a new key
	$('<button>')
	.attr('type', 'button')
	.addClass('button create')
	.text(ref.get_label('encryptioncreatekey'))
	.appendTo(content)
	.on('click', function() { ref.mailvelope_show_keygen_container(content, identity_email); });
	$('<span>').addClass('space').html(' ').appendTo(content);
	$('<button>')
	.attr('type', 'button')
	.addClass('button settings')
	.text(ref.get_label('openmailvelopesettings'))
	.appendTo(content)
	.on('click', function() { ref.mailvelope_keyring.openSettings(); });

	container.show();
	ref.triggerEvent('identity-encryption-show', { container: container });
	})
	.catch(function(err) {
	console.error('Mailvelope keyring error', err);
	})
	};

	// start pgp key generation using Mailvelope
	this.mailvelope_show_keygen_container = function(container, identity_email)
	{
	var cid = new Date().getTime();
	var user_id = {email: identity_email, fullName: $.trim($(ref.gui_objects.editform).find('.ff_name').val())};
	var options = {userIds: [user_id], keySize: 4096};

	$('<div>').attr('id', 'mailvelope-keygen-container-' + cid)
	.css({height: '245px', marginBottom: '10px'})
	.appendTo(container.empty());

	this.mailvelope_keyring.createKeyGenContainer('#mailvelope-keygen-container-' + cid, options)
	.then(function(generator) {
	if (generator instanceof Error) {
	throw generator;
	}

	// append button to start key generation
	$('<button>')
	.attr('type', 'button')
	.addClass('button mainaction generate')
	.text(ref.get_label('generate'))
	.appendTo(container)
	.on('click', function() {
	var btn = $(this).prop('disabled', true);
	generator.generate()
	.then(function(result) {
	if (typeof result === 'string' && result.indexOf('BEGIN PGP') > 0) {
	ref.display_message(ref.get_label('keypaircreatesuccess').replace('$identity', identity_email), 'confirmation');
	// reset keygen view
	ref.mailvelope_identity_keygen();
	}
	})
	.catch(function(err) {
	debugger;
	ref.display_message(err.message \|\| 'errortitle', 'error');
	btn.prop('disabled', false);
	});
	});

	$('<span>').addClass('space').html(' ').appendTo(container);

	$('<button>')
	.attr('type', 'button')
	.addClass('button cancel')
	.text(ref.get_label('cancel'))
	.appendTo(container)
	.on('click', function() { ref.mailvelope_identity_keygen(); });

	ref.triggerEvent('identity-encryption-update', { container: container });
	})
	.catch(function(err) {
	ref.display_message('errortitle', 'error');
	// start over
	ref.mailvelope_identity_keygen();
	});
	};


	/*********************************************************/
	/******* mailbox folders methods *******/
	/*********************************************************/

	this.expunge_mailbox = function(mbox)
	{
	var lock, post_data = {_mbox: mbox};

	// lock interface if it's the active mailbox
	if (mbox == this.env.mailbox) {
	lock = this.set_busy(true, 'loading');
	post_data._reload = 1;
	if (this.env.search_request)
	post_data._search = this.env.search_request;
	}

	// send request to server
	this.http_post('expunge', post_data, lock);
	};

	this.purge_mailbox = function(mbox)
	{
	this.confirm_dialog(this.get_label('purgefolderconfirm'), 'delete', function() {
	var lock, post_data = {_mbox: mbox};

	// lock interface if it's the active mailbox
	if (mbox == ref.env.mailbox) {
	lock = ref.set_busy(true, 'loading');
	post_data._reload = 1;
	}

	// send request to server
	ref.http_post('purge', post_data, lock);
	});

	return false;
	};

	// test if purge command is allowed
	this.purge_mailbox_test = function()
	{
	return (this.env.exists && (
	this.env.mailbox == this.env.trash_mailbox
	\|\| this.env.mailbox == this.env.junk_mailbox
	\|\| this.env.mailbox.startsWith(this.env.trash_mailbox + this.env.delimiter)
	\|\| this.env.mailbox.startsWith(this.env.junk_mailbox + this.env.delimiter)
	));
	};

	// Mark all messages as read in:
	// - selected folder (mode=cur)
	// - selected folder and its subfolders (mode=sub)
	// - all folders (mode=all)
	this.mark_all_read = function(mbox, mode)
	{
	var state, content, nodes = [],
	list = this.message_list,
	folder = mbox \|\| this.env.mailbox,
	post_data = {_uid: '*', _flag: 'read', _mbox: folder, _folders: mode};

	if (typeof mode != 'string') {
	state = this.mark_all_read_state(folder);
	if (!state)
	return;

	if (state > 1) {
	// build content of the dialog
	$.each({cur: 1, sub: 2, all: 4}, function(i, v) {
	var id = 'readallmode' + i,
	label = $('<label>').attr('for', id).text(ref.get_label('folders-' + i)),
	input = $('<input>').attr({type: 'radio', value: i, name: 'mode', id: id, disabled: !(state & v)});

	nodes.push($('<li>').append([input, label]));
	});

	content = $('<ul class="proplist">').append(nodes);
	- $('input:not([disabled]):first', content).attr('checked', true);
	+ $('input:not([disabled])', content).first().attr('checked', true);

	this.simple_dialog(content, this.get_label('markallread'),
	function() {
	ref.mark_all_read(folder, $('input:checked', content).val());
	return true;
	},
	{button: 'mark', button_class: 'save'}
	);

	return;
	}

	post_data._folders = 'cur'; // only current folder has unread messages
	}

	// mark messages on the list
	$.each(list ? list.rows : [], function(uid, row) {
	if (!row.unread)
	return;

	var mbox = ref.env.messages[uid].mbox;
	if (mode == 'all' \|\| mbox == ref.env.mailbox
	\|\| (mode == 'sub' && mbox.startsWith(ref.env.mailbox + ref.env.delimiter))
	) {
	ref.set_message(uid, 'unread', false);
	}
	});

	// send the request
	this.http_post('mark', post_data, this.display_message('markingmessage', 'loading'));
	};

	// Enable/disable mark-all-read action depending on folders state
	this.mark_all_read_state = function(mbox)
	{
	var state = 0,
	li = this.treelist.get_item(mbox \|\| this.env.mailbox),
	folder_item = $(li).is('.unread') ? 1 : 0,
	subfolder_items = $('li.unread', li).length,
	all_items = $('li.unread', ref.gui_objects.folderlist).length;

	state += folder_item;
	state += subfolder_items ? 2 : 0;
	state += all_items > folder_item + subfolder_items ? 4 : 0;

	this.enable_command('mark-all-read', state > 0);

	return state;
	};

	// Display "bounce message" dialog
	this.bounce = function(props, obj, event)
	{
	// get message uid and folder
	var uid = this.get_single_uid(),
	url = this.url('bounce', {_framed: 1, _uid: uid, _mbox: this.get_message_mailbox(uid)}),
	dialog = $('<iframe>').attr('src', url),
	get_form = function() {
	var rc = $('iframe', dialog)[0].contentWindow.rcmail;
	return {rc: rc, form: rc.gui_objects.messageform};
	},
	post_func = function() {
	var post = {}, form = get_form();

	$.each($(form.form).serializeArray(), function() { post[this.name] = this.value; });

	post._uid = form.rc.env.uid;
	post._mbox = form.rc.env.mailbox;
	delete post._action;
	delete post._task;

	if (post._to \|\| post._cc \|\| post._bcc) {
	ref.http_post('bounce', post, ref.set_busy(true, 'sendingmessage'));
	dialog.dialog('close');
	}
	},
	submit_func = function() {
	var form = get_form();

	if (typeof form.form != 'object')
	return false;

	if (!form.rc.check_compose_address_fields(post_func, form.form))
	return false;

	return post_func();
	};

	this.hide_menu('forwardmenu', event);

	dialog = this.simple_dialog(dialog, this.gettext('bouncemsg'), submit_func, {
	button: 'bounce',
	width: 400,
	height: 300
	});

	return true;
	};


	/*********************************************************/
	/******* login form methods *******/
	/*********************************************************/

	// handler for keyboard events on the _user field
	this.login_user_keyup = function(e)
	{
	var key = rcube_event.get_keycode(e),
	passwd = $('#rcmloginpwd');

	// enter
	if (key == 13 && passwd.length && !passwd.val()) {
	passwd.focus();
	return rcube_event.cancel(e);
	}

	return true;
	};


	/*********************************************************/
	/******* message compose methods *******/
	/*********************************************************/

	this.open_compose_step = function(p)
	{
	var url = this.url('mail/compose', p);

	// open new compose window
	if (this.env.compose_extwin && !this.env.extwin) {
	this.open_window(url);
	}
	else {
	this.redirect(url);
	if (this.env.extwin)
	window.resizeTo(Math.max(this.env.popup_width, $(window).width()), $(window).height() + 24);
	}
	};

	// init message compose form: set focus and eventhandlers
	this.init_messageform = function()
	{
	if (!this.gui_objects.messageform)
	return false;

	var elem, pos,
	input_from = $("[name='_from']"),
	input_to = $("[name='_to']"),
	input_subject = $("[name='_subject']"),
	input_message = $("[name='_message']").get(0),
	html_mode = $("[name='_is_html']").val() == '1',
	opener_rc = this.opener();

	// close compose step in opener
	if (opener_rc && opener_rc.env.action == 'compose') {
	setTimeout(function(){
	if (opener.history.length > 1)
	opener.history.back();
	else
	opener_rc.redirect(opener_rc.get_task_url('mail'));
	}, 100);
	this.env.opened_extwin = true;
	}

	if (!html_mode) {
	// On Back button Chrome will overwrite textarea with old content
	// causing e.g. the same signature is added twice (#5809)
	if (input_message.value && input_message.defaultValue !== undefined)
	input_message.value = input_message.defaultValue;

	pos = this.env.top_posting && this.env.compose_mode ? 0 : input_message.value.length;

	// add signature according to selected identity
	// if we have HTML editor, signature is added in a callback
	if (input_from.prop('type') == 'select-one') {
	// for some reason the caret initially is not at pos=0 in Firefox 51 (#5628)
	this.set_caret_pos(input_message, 0);
	this.change_identity(input_from[0]);
	}

	// set initial cursor position
	this.set_caret_pos(input_message, pos);

	// scroll to the bottom of the textarea (#1490114)
	if (pos) {
	$(input_message).scrollTop(input_message.scrollHeight);
	}
	}

	// check for locally stored compose data
	if (this.env.save_localstorage)
	this.compose_restore_dialog(0, html_mode)

	if (input_to.val() == '')
	elem = input_to;
	else if (input_subject.val() == '')
	elem = input_subject;
	else if (input_message)
	elem = input_message;

	this.env.compose_focus_elem = this.init_messageform_inputs(elem);

	// get summary of all field values
	this.compose_field_hash(true);

	// start the auto-save timer
	this.auto_save_start();
	};

	// init autocomplete events on compose form inputs
	this.init_messageform_inputs = function(focused)
	{
	var i, ac_props,
	input_to = $("[name='_to']"),
	ac_fields = ['cc', 'bcc', 'replyto', 'followupto'];

	// configure parallel autocompletion
	if (this.env.autocomplete_threads > 0) {
	ac_props = {
	threads: this.env.autocomplete_threads,
	sources: this.env.autocomplete_sources
	};
	}

	// init live search events
	this.init_address_input_events(input_to, ac_props);
	for (i in ac_fields) {
	this.init_address_input_events($("[name='_"+ac_fields[i]+"']"), ac_props);
	}

	if (!focused)
	focused = input_to;

	// focus first empty element (and return it)
	return $(focused).focus().get(0);
	};

	this.compose_restore_dialog = function(j, html_mode)
	{
	var i, key, formdata, index = this.local_storage_get_item('compose.index', []);

	var show_next = function(i) {
	if (++i < index.length)
	ref.compose_restore_dialog(i, html_mode)
	}

	for (i = j \|\| 0; i < index.length; i++) {
	key = index[i];
	formdata = this.local_storage_get_item('compose.' + key, null, true);
	if (!formdata) {
	continue;
	}
	// restore saved copy of current compose_id
	if (formdata.changed && key == this.env.compose_id) {
	this.restore_compose_form(key, html_mode);
	break;
	}
	// skip records from 'other' drafts
	if (this.env.draft_id && formdata.draft_id && formdata.draft_id != this.env.draft_id) {
	continue;
	}
	// skip records on reply
	if (this.env.reply_msgid && formdata.reply_msgid != this.env.reply_msgid) {
	continue;
	}
	// show dialog asking to restore the message
	if (formdata.changed && formdata.session != this.env.session_id) {
	this.show_popup_dialog(
	this.get_label('restoresavedcomposedata')
	.replace('$date', new Date(formdata.changed).toLocaleString())
	.replace('$subject', formdata._subject)
	.replace(/\n/g, '<br/>'),
	this.get_label('restoremessage'),
	[{
	text: this.get_label('restore'),
	'class': 'mainaction restore',
	click: function(){
	ref.restore_compose_form(key, html_mode);
	ref.remove_compose_data(key); // remove old copy
	ref.save_compose_form_local(); // save under current compose_id
	$(this).dialog('close');
	}
	},
	{
	text: this.get_label('delete'),
	'class': 'delete',
	click: function(){
	ref.remove_compose_data(key);
	$(this).dialog('close');
	show_next(i);
	}
	},
	{
	text: this.get_label('ignore'),
	'class': 'cancel',
	click: function(){
	$(this).dialog('close');
	show_next(i);
	}
	}]
	);
	break;
	}
	}
	}

	this.init_address_input_events = function(obj, props)
	{
	obj.keydown(function(e) { return ref.ksearch_keydown(e, this, props); })
	.attr({autocomplete: 'off', 'aria-autocomplete': 'list', 'aria-expanded': 'false', role: 'combobox'});

	// hide the popup on any click
	var callback = function() { ref.ksearch_hide(); };
	$(document).on('click', callback);
	// and on scroll (that cannot be jQuery.on())
	document.addEventListener('scroll', callback, true);
	};

	this.submit_messageform = function(draft, saveonly)
	{
	var form = this.gui_objects.messageform;

	if (!form)
	return;

	// the message has been sent but not saved, ask the user what to do
	if (!saveonly && this.env.is_sent) {
	return this.simple_dialog(this.get_label('messageissent'), '', // TODO: dialog title
	function() {
	ref.submit_messageform(false, true);
	return true;
	}
	);
	}

	// delegate sending to Mailvelope routine
	if (this.mailvelope_editor) {
	return this.mailvelope_submit_messageform(draft, saveonly);
	}

	// all checks passed, send message
	var msgid = this.set_busy(true, draft \|\| saveonly ? 'savingmessage' : 'sendingmessage'),
	lang = this.spellcheck_lang(),
	files = [];

	// send files list
	$('li', this.gui_objects.attachmentlist).each(function() { files.push(this.id.replace(/^rcmfile/, '')); });
	$('[name="_attachments"]', form).val(files.join());

	form.target = this.get_save_target();
	form._draft.value = draft ? '1' : '';
	form.action = this.add_url(form.action, '_unlock', msgid);
	form.action = this.add_url(form.action, '_framed', 1);

	if (lang)
	form.action = this.add_url(form.action, '_lang', lang);
	if (saveonly)
	form.action = this.add_url(form.action, '_saveonly', 1);

	// register timer to notify about connection timeout
	this.submit_timer = setTimeout(function(){
	ref.set_busy(false, null, msgid);
	ref.display_message('requesttimedout', 'error');
	}, this.env.request_timeout * 1000);

	form.submit();
	};

	this.compose_recipient_select = function(list)
	{
	var id, n, recipients = 0, selection = list.get_selection();
	for (n=0; n < selection.length; n++) {
	id = selection[n];
	if (this.env.contactdata[id])
	recipients++;
	}
	this.enable_command('add-recipient', recipients);
	};

	this.compose_add_recipient = function(field)
	{
	// find last focused field name
	if (!field) {
	field = $(this.env.focused_field).filter(':visible');
	field = field.length ? field.attr('id').replace('_', '') : 'to';
	}

	var recipients = [], input = $('#_' + field), selection = this.contact_list.get_selection();

	if (this.contact_list && selection.length) {
	for (var id, n=0; n < selection.length; n++) {
	id = selection[n];
	if (id && this.env.contactdata[id]) {
	recipients.push(this.env.contactdata[id]);

	// group is added, expand it
	if (id.charAt(0) == 'E' && this.env.contactdata[id].indexOf('@') < 0 && input.length) {
	var gid = id.substr(1);
	this.group2expand[gid] = { name:this.env.contactdata[id], input:input.get(0) };
	this.http_request('group-expand', {_source: this.env.source, _gid: gid}, false);
	}
	}
	}
	}

	if (recipients.length && input.length) {
	var oldval = input.val();
	if (oldval && !/[,;]\s*$/.test(oldval))
	oldval += ', ';
	input.val(oldval + recipients.join(', ') + ', ').change();
	this.triggerEvent('add-recipient', { field:field, recipients:recipients });
	}

	return recipients.length;
	};

	// checks the input fields before sending a message
	this.check_compose_input = function(cmd)
	{
	var key,
	input_subject = $("[name='_subject']");

	// check if all files has been uploaded
	for (key in this.env.attachments) {
	if (typeof this.env.attachments[key] === 'object' && !this.env.attachments[key].complete) {
	this.alert_dialog(this.get_label('notuploadedwarning'));
	return false;
	}
	}

	// display localized warning for missing subject
	if (!this.env.nosubject_warned && input_subject.val() == '') {
	var dialog,
	prompt_value = $('<input>').attr({type: 'text', size: 40}),
	myprompt = $('<div class="prompt">')
	.append($('<div class="message">').text(this.get_label('nosubjectwarning')))
	.append(prompt_value),
	save_func = function() {
	input_subject.val(prompt_value.val());
	dialog.dialog('close');
	if (ref.check_compose_input(cmd))
	ref.command(cmd, { nocheck:true }); // repeat command which triggered this
	};

	dialog = this.show_popup_dialog(
	myprompt,
	this.get_label('nosubjecttitle'),
	[{
	text: this.get_label('sendmessage'),
	'class': 'mainaction send',
	click: function() { save_func(); }
	}, {
	text: this.get_label('cancel'),
	'class': 'cancel',
	click: function() {
	input_subject.focus();
	dialog.dialog('close');
	}
	}],
	{dialogClass: 'warning'}
	);

	prompt_value.select().keydown(function(e) {
	if (e.which == 13) save_func();
	});

	this.env.nosubject_warned = true;
	return false;
	}

	// check for empty body (only possible if not mailvelope encrypted)
	if (!this.mailvelope_editor && !this.editor.get_content() && !confirm(this.get_label('nobodywarning'))) {
	this.editor.focus();
	return false;
	}

	if (!this.check_compose_address_fields(cmd))
	return false;

	// move body from html editor to textarea (just to be sure, #1485860)
	this.editor.save();

	return true;
	};

	this.check_compose_address_fields = function(cmd, form)
	{
	if (!form)
	form = window.document;

	// check input fields
	var key, recipients, dialog,
	limit = this.env.max_disclosed_recipients,
	input_to = $("[name='_to']", form),
	input_cc = $("[name='_cc']", form),
	input_bcc = $("[name='_bcc']", form),
	input_from = $("[name='_from']", form),
	get_recipients = function(fields) {
	fields = $.map(fields, function(v) {
	v = $.trim(v.val());
	return v.length ? v : null;
	});
	return fields.join(',').replace(/^[\s,;]+/, '').replace(/[\s,;]+$/, '');
	};

	// check sender (if have no identities)
	if (input_from.prop('type') == 'text' && !rcube_check_email(input_from.val(), true)) {
	this.alert_dialog(this.get_label('nosenderwarning'), function() {
	input_from.focus();
	});
	return false;
	}

	// check for empty recipient
	if (!rcube_check_email(get_recipients([input_to, input_cc, input_bcc]), true)) {
	this.alert_dialog(this.get_label('norecipientwarning'), function() {
	input_to.focus();
	});
	return false;
	}

	// check disclosed recipients limit
	if (limit && !this.env.disclosed_recipients_warned
	&& rcube_check_email(recipients = get_recipients([input_to, input_cc]), true, true) > limit
	) {
	var save_func = function(move_to_bcc) {
	if (move_to_bcc) {
	var bcc = input_bcc.val();
	input_bcc.val((bcc ? (bcc + ', ') : '') + recipients).change();
	input_to.val('').change();
	input_cc.val('').change();
	}

	dialog.dialog('close');

	if (typeof cmd == 'function')
	cmd();
	else if (cmd)
	ref.command(cmd, { nocheck:true }); // repeat command which triggered this
	};

	dialog = this.show_popup_dialog(
	this.get_label('disclosedrecipwarning'),
	this.get_label('disclosedreciptitle'),
	[{
	text: this.get_label('sendmessage'),
	click: function() { save_func(false); },
	'class': 'mainaction'
	}, {
	text: this.get_label('bccinstead'),
	click: function() { save_func(true); }
	}, {
	text: this.get_label('cancel'),
	click: function() { dialog.dialog('close'); },
	'class': 'cancel'
	}],
	{dialogClass: 'warning'}
	);

	this.env.disclosed_recipients_warned = true;
	return false;
	}

	return true;
	};

	this.toggle_editor = function(props, obj, e)
	{
	// @todo: this should work also with many editors on page
	var result = this.editor.toggle(props.html, props.noconvert \|\| false);

	// satisfy the expectations of aftertoggle-editor event subscribers
	props.mode = props.html ? 'html' : 'plain';

	if (!result && e) {
	// fix selector value if operation failed
	props.mode = props.html ? 'plain' : 'html';
	$(e.target).filter('select').val(props.mode);
	}

	if (result) {
	// update internal format flag
	$("[name='_is_html']").val(props.html ? 1 : 0);
	}

	return result;
	};

	// Inserts a predefined response to the compose editor
	this.insert_response = function(key)
	{
	this.editor.replace(this.env.textresponses[key]);
	this.display_message('responseinserted', 'confirmation');
	};

	/**
	* Open the dialog to save a new canned response
	*/
	this.save_response = function()
	{
	// show dialog to enter a name and to modify the text to be saved
	var buttons = {}, text = this.editor.get_content({selection: true, format: 'text', nosig: true}),
	html = '<form class="propform">' +
	'<div class="prop block"><label for="ffresponsename">' + this.get_label('responsename') + '</label>' +
	'<input type="text" name="name" id="ffresponsename" size="40" /></div>' +
	'<div class="prop block"><label for="ffresponsetext">' + this.get_label('responsetext') + '</label>' +
	'<textarea name="text" id="ffresponsetext" cols="40" rows="8"></textarea></div>' +
	'</form>';

	buttons[this.get_label('save')] = function(e) {
	var name = $('#ffresponsename').val(),
	text = $('#ffresponsetext').val();

	if (!text) {
	$('#ffresponsetext').select();
	return false;
	}
	if (!name)
	name = text.replace(/[\r\n]+/g, ' ').substring(0,40);

	var lock = ref.display_message('savingresponse', 'loading');
	ref.http_post('settings/responses', { _insert:1, _name:name, _text:text }, lock);
	$(this).dialog('close');
	};

	buttons[this.get_label('cancel')] = function() {
	$(this).dialog('close');
	};

	this.show_popup_dialog(html, this.get_label('newresponse'), buttons, {button_classes: ['mainaction save', 'cancel']});

	$('#ffresponsetext').val(text);
	$('#ffresponsename').select();
	};

	this.add_response_item = function(response)
	{
	var key = response.key;
	this.env.textresponses[key] = response;

	// append to responses list
	if (this.gui_objects.responseslist) {
	var li = $('<li>').appendTo(this.gui_objects.responseslist);
	$('<a>').addClass('insertresponse active')
	.attr('href', '#')
	.attr('rel', key)
	.attr('tabindex', '0')
	.html(this.quote_html(response.name))
	.appendTo(li)
	.mousedown(function(e) {
	return rcube_event.cancel(e);
	})
	.on('mouseup keypress', function(e) {
	if (e.type == 'mouseup' \|\| rcube_event.get_keycode(e) == 13) {
	ref.command('insert-response', $(this).attr('rel'));
	$(document.body).trigger('mouseup'); // hides the menu
	return rcube_event.cancel(e);
	}
	});
	}
	};

	this.edit_responses = function()
	{
	// TODO: implement inline editing of responses
	};

	this.delete_response = function(key)
	{
	if (!key && this.responses_list) {
	var selection = this.responses_list.get_selection();
	key = selection[0];
	}

	// submit delete request
	if (key) {
	this.confirm_dialog(this.get_label('deleteresponseconfirm'), 'delete', function() {
	ref.http_post('settings/delete-response', { _key: key }, false);
	});
	}
	};

	// updates spellchecker buttons on state change
	this.spellcheck_state = function()
	{
	var active = this.editor.spellcheck_state();

	$.each(this.buttons.spellcheck \|\| [], function(i, v) {
	$('#' + v.id)[active ? 'addClass' : 'removeClass']('selected');
	});

	return active;
	};

	// get selected language
	this.spellcheck_lang = function()
	{
	return this.editor.get_language();
	};

	this.spellcheck_lang_set = function(lang)
	{
	this.editor.set_language(lang);
	};

	// resume spellchecking, highlight provided mispellings without new ajax request
	this.spellcheck_resume = function(data)
	{
	this.editor.spellcheck_resume(data);
	};

	this.set_draft_id = function(id)
	{
	if (id && id != this.env.draft_id) {
	var filter = {task: 'mail', action: ''},
	rc = this.opener(false, filter) \|\| this.opener(true, filter);

	// refresh the drafts folder in the opener window
	if (rc && rc.env.mailbox == this.env.drafts_mailbox)
	rc.command('checkmail');

	this.env.draft_id = id;
	$("[name='_draft_saveid']").val(id);
	}

	// always remove local copy upon saving as draft
	this.remove_compose_data(this.env.compose_id);
	this.compose_skip_unsavedcheck = false;
	};

	// Create (attach) 'savetarget' iframe before use
	this.get_save_target = function()
	{
	// Removing the frame on load/error to workaround issues with window history
	this.dummy_iframe('savetarget', 'about:blank')
	.on('load error', function() { $(this).remove(); });

	return 'savetarget';
	};

	this.auto_save_start = function()
	{
	if (this.env.draft_autosave) {
	this.save_timer = setTimeout(function() {
	ref.command("savedraft");
	}, this.env.draft_autosave * 1000);
	}

	// save compose form content to local storage every 5 seconds
	if (!this.local_save_timer && window.localStorage && this.env.save_localstorage) {
	// track typing activity and only save on changes
	this.compose_type_activity = this.compose_type_activity_last = 0;
	$(document).keypress(function(e) { ref.compose_type_activity++; });

	this.local_save_timer = setInterval(function(){
	if (ref.compose_type_activity > ref.compose_type_activity_last) {
	ref.save_compose_form_local();
	ref.compose_type_activity_last = ref.compose_type_activity;
	}
	}, 5000);

	$(window).on('unload', function() {
	// remove copy from local storage if compose screen is left after warning
	if (!ref.env.server_error)
	ref.remove_compose_data(ref.env.compose_id);
	});
	}

	// check for unsaved changes before leaving the compose page
	if (!window.onbeforeunload) {
	window.onbeforeunload = function() {
	if (!ref.compose_skip_unsavedcheck && ref.cmp_hash != ref.compose_field_hash()) {
	return ref.get_label('notsentwarning');
	}
	};
	}

	// Unlock interface now that saving is complete
	this.busy = false;
	};

	this.compose_field_hash = function(save)
	{
	// check input fields
	var i, id, val, str = '', hash_fields = ['to', 'cc', 'bcc', 'subject'];

	for (i=0; i<hash_fields.length; i++)
	if (val = $('[name="_' + hash_fields[i] + '"]').val())
	str += val + ':';

	str += this.editor.get_content({refresh: false});

	if (this.env.attachments)
	for (id in this.env.attachments)
	str += id;

	// we can't detect changes in the Mailvelope editor so assume it changed
	if (this.mailvelope_editor) {
	str += ';' + new Date().getTime();
	}

	if (save)
	this.cmp_hash = str;

	return str;
	};

	// store the contents of the compose form to localstorage
	this.save_compose_form_local = function()
	{
	// feature is disabled
	if (!this.env.save_localstorage)
	return;

	var formdata = { session:this.env.session_id, changed:new Date().getTime() },
	ed, empty = true;

	// get fresh content from editor
	this.editor.save();

	if (this.env.draft_id) {
	formdata.draft_id = this.env.draft_id;
	}
	if (this.env.reply_msgid) {
	formdata.reply_msgid = this.env.reply_msgid;
	}

	$('input, select, textarea', this.gui_objects.messageform).each(function(i, elem) {
	switch (elem.tagName.toLowerCase()) {
	case 'input':
	if (elem.type == 'button' \|\| elem.type == 'submit' \|\| (elem.type == 'hidden' && elem.name != '_is_html')) {
	break;
	}
	formdata[elem.name] = elem.type != 'checkbox' \|\| elem.checked ? $(elem).val() : '';

	if (formdata[elem.name] != '' && elem.type != 'hidden')
	empty = false;
	break;

	case 'select':
	formdata[elem.name] = $('option:checked', elem).val();
	break;

	default:
	formdata[elem.name] = $(elem).val();
	if (formdata[elem.name] != '')
	empty = false;
	}
	});

	if (!empty) {
	var index = this.local_storage_get_item('compose.index', []),
	key = this.env.compose_id;

	if ($.inArray(key, index) < 0) {
	index.push(key);
	}

	this.local_storage_set_item('compose.' + key, formdata, true);
	this.local_storage_set_item('compose.index', index);
	}
	};

	// write stored compose data back to form
	this.restore_compose_form = function(key, html_mode)
	{
	var ed, formdata = this.local_storage_get_item('compose.' + key, true);

	if (formdata && typeof formdata == 'object') {
	$.each(formdata, function(k, value) {
	if (k[0] == '_') {
	var elem = $("*[name='"+k+"']");
	if (elem[0] && elem[0].type == 'checkbox') {
	elem.prop('checked', value != '');
	}
	else {
	elem.val(value);
	}
	}
	});

	// initialize HTML editor
	if ((formdata._is_html == '1' && !html_mode) \|\| (formdata._is_html != '1' && html_mode)) {
	this.command('toggle-editor', {id: this.env.composebody, html: !html_mode, noconvert: true});
	}
	}
	};

	// remove stored compose data from localStorage
	this.remove_compose_data = function(key)
	{
	var index = this.local_storage_get_item('compose.index', []);

	if ($.inArray(key, index) >= 0) {
	this.local_storage_remove_item('compose.' + key);
	this.local_storage_set_item('compose.index', $.grep(index, function(val,i) { return val != key; }));
	}
	};

	// clear all stored compose data of this user
	this.clear_compose_data = function()
	{
	var i, index = this.local_storage_get_item('compose.index', []);

	for (i=0; i < index.length; i++) {
	this.local_storage_remove_item('compose.' + index[i]);
	}

	this.local_storage_remove_item('compose.index');
	};

	this.change_identity = function(obj, show)
	{
	if (!obj \|\| !obj.options)
	return false;

	var id = $(obj).val(),
	got_sig = this.env.signatures && this.env.signatures[id],
	sig = this.env.identity,
	show_sig = show ? show : this.env.show_sig;

	// enable manual signature insert
	if (got_sig) {
	this.enable_command('insert-sig', true);
	this.env.compose_commands.push('insert-sig');
	got_sig = true;
	}
	else
	this.enable_command('insert-sig', false);

	// first function execution
	if (!this.env.identities_initialized) {
	this.env.identities_initialized = true;
	if (this.env.show_sig_later)
	this.env.show_sig = true;
	if (this.env.opened_extwin)
	return;
	}

	// update reply-to/bcc fields with addresses defined in identities
	$.each(['replyto', 'bcc'], function() {
	var rx, key = this,
	old_val = sig && ref.env.identities[sig] ? ref.env.identities[sig][key] : '',
	new_val = id && ref.env.identities[id] ? ref.env.identities[id][key] : '',
	input = $('[name="_'+key+'"]'), input_val = input.val();

	// remove old address(es)
	if (old_val && input_val) {
	rx = new RegExp('\\s' + RegExp.escape(old_val) + '\\s');
	input_val = input_val.replace(rx, '');
	}

	// cleanup
	input_val = String(input_val).replace(/[,;]\s*[,;]/g, ',').replace(/^[\s,;]+/, '');

	// add new address(es)
	if (new_val && input_val.indexOf(new_val) == -1 && input_val.indexOf(new_val.replace(/"/g, '')) == -1) {
	if (input_val) {
	input_val = input_val.replace(/[,;\s]+$/, '') + ', ';
	}

	input_val += new_val + ', ';
	}

	if (old_val \|\| new_val)
	input.val(input_val).change();
	});

	if (this.editor)
	this.editor.change_signature(id, show_sig);

	if (show && got_sig)
	this.display_message('siginserted', 'confirmation');

	this.env.identity = id;
	this.triggerEvent('change_identity');

	return true;
	};

	// Open file selection dialog for defined upload form
	// Works only on click and only with smart-upload forms
	this.upload_input = function(name)
	{
	$('#' + name + ' input[type="file"]').click();
	};

	// upload (attachment) file
	this.upload_file = function(form, action, lock)
	{
	if (form) {
	var fname, files = [];
	$('input', form).each(function() {
	if (this.files) {
	fname = this.name;
	for (var i=0; i < this.files.length; i++)
	files.push(this.files[i]);
	}
	});

	return this.file_upload(files, {_id: this.env.compose_id \|\| ''}, {
	name: fname,
	action: action,
	lock: lock
	});
	}
	};

	// add file name to attachment list
	// called from upload page
	this.add2attachment_list = function(name, att, upload_id)
	{
	if (upload_id)
	this.triggerEvent('fileuploaded', {name: name, attachment: att, id: upload_id});

	if (!this.env.attachments)
	this.env.attachments = {};

	if (upload_id && this.env.attachments[upload_id])
	delete this.env.attachments[upload_id];

	this.env.attachments[name] = att;

	if (!this.gui_objects.attachmentlist)
	return false;

	var label, indicator, li = $('<li>');

	if (!att.complete && att.html.indexOf('<') < 0)
	att.html = '<span class="uploading">' + att.html + '</span>';

	if (!att.complete && this.env.loadingicon)
	att.html = '<img src="'+this.env.loadingicon+'" alt="" class="uploading" />' + att.html;

	if (!att.complete) {
	label = this.get_label('cancel');
	att.html = '<a title="'+label+'" onclick="return rcmail.cancel_attachment_upload(\''+name+'\');" href="#cancelupload" class="cancelupload">'
	+ (this.env.cancelicon ? '<img src="'+this.env.cancelicon+'" alt="'+label+'" />' : '<span class="inner">' + label + '</span>') + '</a>' + att.html;
	}

	li.attr('id', name).addClass(att.classname).html(att.html)
	.find('.attachment-name').on('mouseover', function() { rcube_webmail.long_subject_title_ex(this); });

	// replace indicator's li
	if (upload_id && (indicator = document.getElementById(upload_id))) {
	li.replaceAll(indicator);
	}
	else { // add new li
	li.appendTo(this.gui_objects.attachmentlist);
	}

	// set tabindex attribute
	var tabindex = $(this.gui_objects.attachmentlist).attr('data-tabindex') \|\| '0';
	li.find('a').attr('tabindex', tabindex);

	this.triggerEvent('fileappended', {name: name, attachment: att, id: upload_id, item: li});

	return true;
	};

	this.remove_from_attachment_list = function(name)
	{
	if (this.env.attachments) {
	delete this.env.attachments[name];
	$('#'+name).remove();
	}
	};

	this.remove_attachment = function(name)
	{
	if (name && this.env.attachments[name])
	this.http_post('remove-attachment', { _id:this.env.compose_id, _file:name });

	return false;
	};

	this.cancel_attachment_upload = function(name)
	{
	if (!name \|\| !this.uploads[name])
	return false;

	this.remove_from_attachment_list(name);
	this.uploads[name].abort();
	return false;
	};

	// rename uploaded attachment (in compose)
	this.rename_attachment = function(id)
	{
	var attachment = this.env.attachments ? this.env.attachments[id] : null;

	if (!attachment)
	return;

	var input = $('<input>').attr({type: 'text', size: 50}).val(attachment.name),
	content = $('<label>').text(this.get_label('namex')).append(input);

	this.simple_dialog(content, 'attachmentrename', function() {
	var name;
	if ((name = input.val()) && name != attachment.name) {
	ref.http_post('rename-attachment', {_id: ref.env.compose_id, _file: id, _name: name},
	ref.set_busy(true, 'loading'));
	return true;
	}
	}
	);
	};

	// update attachments list with the new name
	this.rename_attachment_handler = function(id, name)
	{
	var attachment = this.env.attachments ? this.env.attachments[id] : null;

	if (!attachment \|\| !name)
	return;

	attachment.name = name;

	$('#' + id + ' .attachment-name').text(name).attr('title', '');
	};

	// send remote request to add a new contact
	this.add_contact = function(value, reload)
	{
	if (value)
	this.http_post('addcontact', {_address: value, _reload: reload});
	};

	// send remote request to search mail or contacts
	this.qsearch = function(value)
	{
	// Note: Some plugins would like to do search without value,
	// so we keep value != '' check to allow that use-case. Which means
	// e.g. that qsearch() with no argument will execute the search.
	if (value != '' \|\| $(this.gui_objects.qsearchbox).val() \|\| $(this.gui_objects.search_interval).val()) {
	var r, lock = this.set_busy(true, 'searching'),
	url = this.search_params(value),
	action = this.env.action == 'compose' && this.contact_list ? 'search-contacts' : 'search';

	if (this.message_list)
	this.clear_message_list();
	else if (this.contact_list)
	this.list_contacts_clear();

	if (this.env.source)
	url._source = this.env.source;
	if (this.env.group)
	url._gid = this.env.group;

	// reset vars
	this.env.current_page = 1;

	r = this.http_request(action, url, lock);

	this.env.qsearch = {lock: lock, request: r};
	this.enable_command('set-listmode', this.env.threads && (this.env.search_scope \|\| 'base') == 'base');

	return true;
	}

	return false;
	};

	this.continue_search = function(request_id)
	{
	var lock = this.set_busy(true, 'stillsearching');

	setTimeout(function() {
	var url = ref.search_params();
	url._continue = request_id;
	ref.env.qsearch = { lock: lock, request: ref.http_request('search', url, lock) };
	}, 100);
	};

	// build URL params for search
	this.search_params = function(search, filter)
	{
	var n, url = {}, mods_arr = [],
	mods = this.env.search_mods,
	scope = this.env.search_scope \|\| 'base',
	mbox = scope == 'all' ? '*' : this.env.mailbox;

	if (!filter && this.gui_objects.search_filter)
	filter = this.gui_objects.search_filter.value;

	if (!search && this.gui_objects.qsearchbox)
	search = this.gui_objects.qsearchbox.value;

	if (this.gui_objects.search_interval)
	url._interval = $(this.gui_objects.search_interval).val();

	if (search) {
	url._q = search;

	if (mods && this.message_list)
	mods = mods[mbox] \|\| mods['*'];

	if (mods) {
	for (n in mods)
	mods_arr.push(n);
	url._headers = mods_arr.join(',');
	}
	}

	url._layout = this.env.layout;
	url._filter = filter;
	url._scope = scope;

	if (mbox && scope != 'all')
	url._mbox = mbox;

	return url;
	};

	// reset search filter
	this.reset_search_filter = function()
	{
	this.filter_disabled = true;
	if (this.gui_objects.search_filter)
	$(this.gui_objects.search_filter).val('ALL').change();
	this.filter_disabled = false;
	};

	// reset quick-search form
	this.reset_qsearch = function(all)
	{
	if (this.gui_objects.qsearchbox)
	this.gui_objects.qsearchbox.value = '';

	if (this.gui_objects.search_interval)
	$(this.gui_objects.search_interval).val('');

	if (this.env.qsearch)
	this.abort_request(this.env.qsearch);

	if (all) {
	this.env.search_scope = 'base';
	this.reset_search_filter();
	}

	this.env.qsearch = null;
	this.env.search_request = null;
	this.env.search_id = null;
	this.select_all_mode = false;

	this.enable_command('set-listmode', this.env.threads);
	};

	this.set_searchscope = function(scope)
	{
	var old = this.env.search_scope;
	this.env.search_scope = scope;

	// re-send search query with new scope
	if (scope != old && this.env.search_request) {
	if (!this.qsearch(this.gui_objects.qsearchbox.value) && this.env.search_filter && this.env.search_filter != 'ALL')
	this.filter_mailbox(this.env.search_filter);
	if (scope != 'all')
	this.select_folder(this.env.mailbox, '', true);
	}
	};

	this.set_searchinterval = function(interval)
	{
	var old = this.env.search_interval;
	this.env.search_interval = interval;

	// re-send search query with new interval
	if (interval != old && this.env.search_request) {
	if (!this.qsearch(this.gui_objects.qsearchbox.value) && this.env.search_filter && this.env.search_filter != 'ALL')
	this.filter_mailbox(this.env.search_filter);
	if (interval)
	this.select_folder(this.env.mailbox, '', true);
	}
	};

	this.set_searchmods = function(mods)
	{
	var mbox = this.env.mailbox,
	scope = this.env.search_scope \|\| 'base';

	if (scope == 'all')
	mbox = '*';

	if (!this.env.search_mods)
	this.env.search_mods = {};

	if (mbox)
	this.env.search_mods[mbox] = mods;
	};

	this.is_multifolder_listing = function()
	{
	return this.env.multifolder_listing !== undefined ? this.env.multifolder_listing :
	(this.env.search_request && (this.env.search_scope \|\| 'base') != 'base');
	};

	// action executed after mail is sent
	this.sent_successfully = function(type, msg, folders, save_error)
	{
	this.display_message(msg, type);
	this.compose_skip_unsavedcheck = true;

	if (this.env.extwin) {
	if (!save_error)
	this.lock_form(this.gui_objects.messageform);

	var filter = {task: 'mail', action: ''},
	rc = this.opener(false, filter) \|\| this.opener(true, filter);

	if (rc) {
	rc.display_message(msg, type);
	// refresh the folder where sent message was saved or replied message comes from
	if (folders && $.inArray(rc.env.mailbox, folders) >= 0) {
	rc.command('checkmail');
	}
	}

	if (!save_error)
	setTimeout(function() { window.close(); }, 1000);
	}
	else if (!save_error) {
	// before redirect we need to wait some time for Chrome (#1486177)
	setTimeout(function() { ref.list_mailbox(); }, 500);
	}

	if (save_error)
	this.env.is_sent = true;
	};

	this.image_rotate = function()
	{
	var curr = this.image_style ? (this.image_style.rotate \|\| 0) : 0;

	this.image_style.rotate = curr > 180 ? 0 : curr + 90;
	this.apply_image_style();
	};

	this.image_scale = function(prop)
	{
	var curr = this.image_style ? (this.image_style.scale \|\| 1) : 1;

	this.image_style.scale = Math.max(0.1, curr + 0.1 * (prop == '-' ? -1 : 1));
	this.apply_image_style();
	};

	this.apply_image_style = function()
	{
	var style = [],
	head = $(this.gui_objects.messagepartframe).contents().find('head');

	$('#image-style', head).remove();

	$.each({scale: '', rotate: 'deg'}, function(i, v) {
	var val = ref.image_style[i];
	if (val)
	style.push(i + '(' + val + v + ')');
	});

	if (style)
	head.append($('<style id="image-style">').text('img { transform: ' + style.join(' ') + '}'));
	};

	// Update import dialog state
	this.import_state_set = function(state)
	{
	if (this.import_dialog) {
	this.import_state = state;
	// activate Import button depending on state
	- $(this.import_dialog).parent().find('.ui-dialog-buttonset > button:first').attr('disabled', state != 'error');
	+ $(this.import_dialog).parent().find('.ui-dialog-buttonset > button').first().attr('disabled', state != 'error');
	}
	};


	/*********************************************************/
	/******* keyboard live-search methods *******/
	/*********************************************************/

	// handler for keyboard events on address-fields
	this.ksearch_keydown = function(e, obj, props)
	{
	if (this.ksearch_timer)
	clearTimeout(this.ksearch_timer);

	var key = rcube_event.get_keycode(e);

	switch (key) {
	case 38: // arrow up
	case 40: // arrow down
	if (!this.ksearch_visible())
	return;

	var dir = key == 38 ? 1 : 0,
	highlight = this.ksearch_pane.find('li.selected')[0];

	if (!highlight)
	highlight = this.ksearch_pane.__ul.firstChild;

	if (highlight)
	this.ksearch_select(dir ? highlight.previousSibling : highlight.nextSibling);

	return rcube_event.cancel(e);

	case 9: // tab
	if (rcube_event.get_modifier(e) == SHIFT_KEY \|\| !this.ksearch_visible()) {
	this.ksearch_hide();
	return;
	}

	case 13: // enter
	if (!this.ksearch_visible())
	return false;

	// insert selected address and hide ksearch pane
	this.insert_recipient(this.ksearch_selected);
	this.ksearch_hide();

	// Don't cancel on Tab, we want to jump to the next field (#5659)
	return key == 9 ? null : rcube_event.cancel(e);

	case 27: // escape
	this.ksearch_hide();
	return;

	case 37: // left
	case 39: // right
	return;
	}

	// start timer
	this.ksearch_timer = setTimeout(function(){ ref.ksearch_get_results(props); }, 200);
	this.ksearch_input = obj;

	return true;
	};

	this.ksearch_visible = function()
	{
	return this.ksearch_selected !== null && this.ksearch_selected !== undefined && this.ksearch_value;
	};

	this.ksearch_select = function(node)
	{
	if (this.ksearch_pane && node) {
	this.ksearch_pane.find('li.selected').removeClass('selected').removeAttr('aria-selected');
	}

	if (node) {
	$(node).addClass('selected').attr('aria-selected', 'true');
	this.ksearch_selected = node._rcm_id;
	$(this.ksearch_input).attr('aria-activedescendant', 'rcmkSearchItem' + this.ksearch_selected);
	}
	};

	this.insert_recipient = function(id)
	{
	if (id === null \|\| !this.env.contacts[id] \|\| !this.ksearch_input)
	return;

	var trigger = false, insert = '', delim = ', ';

	this.ksearch_destroy();

	// insert all members of a group
	if (typeof this.env.contacts[id] === 'object' && this.env.contacts[id].type == 'group' && !this.env.contacts[id].email) {
	insert += this.env.contacts[id].name + delim;
	this.group2expand[this.env.contacts[id].id] = $.extend({ input: this.ksearch_input }, this.env.contacts[id]);
	this.http_request('mail/group-expand', {_source: this.env.contacts[id].source, _gid: this.env.contacts[id].id}, false);
	}
	else if (typeof this.env.contacts[id] === 'object' && this.env.contacts[id].name) {
	insert = this.env.contacts[id].name + delim;
	trigger = true;
	}
	else if (typeof this.env.contacts[id] === 'string') {
	insert = this.env.contacts[id] + delim;
	trigger = true;
	}

	this.ksearch_input_replace(this.ksearch_value, insert);

	if (trigger) {
	this.triggerEvent('autocomplete_insert', { field:this.ksearch_input, insert:insert, data:this.env.contacts[id], search:this.ksearch_value_last, result_type:'person' });
	this.ksearch_value_last = null;
	this.compose_type_activity++;
	}
	};

	this.replace_group_recipients = function(id, recipients)
	{
	if (this.group2expand[id]) {
	this.ksearch_input_replace(this.group2expand[id].name, recipients, this.group2expand[id].input);
	this.triggerEvent('autocomplete_insert', { field:this.group2expand[id].input, insert:recipients, data:this.group2expand[id], search:this.ksearch_value_last, result_type:'group' });
	this.ksearch_value_last = null;
	this.group2expand[id] = null;
	this.compose_type_activity++;
	}
	};

	// address search processor
	this.ksearch_get_results = function(props)
	{
	if (this.ksearch_pane && this.ksearch_pane.is(":visible"))
	this.ksearch_pane.hide();

	// get string from cursor position back to the last comma or semicolon
	var q = this.ksearch_input_get(),
	min = this.env.autocomplete_min_length,
	data = this.ksearch_data;

	// trim query string
	q = $.trim(q);

	// Don't (re-)search if the last results are still active
	if (q == this.ksearch_value)
	return;

	this.ksearch_destroy();

	if (q.length && q.length < min) {
	if (!this.ksearch_info) {
	this.ksearch_info = this.display_message(this.get_label('autocompletechars').replace('$min', min));
	}
	return;
	}

	var old_value = this.ksearch_value;
	this.ksearch_value = q;
	this.ksearch_value_last = q; // Group expansion clears ksearch_value before calling autocomplete_insert trigger, therefore store it in separate variable for later consumption.

	// ...string is empty
	if (!q.length)
	return;

	// ...new search value contains old one and previous search was not finished or its result was empty
	if (old_value && old_value.length && q.startsWith(old_value) && (!data \|\| data.num <= 0) && this.env.contacts && !this.env.contacts.length)
	return;

	var sources = props && props.sources ? props.sources : [''];
	var reqid = this.multi_thread_http_request({
	items: sources,
	threads: props && props.threads ? props.threads : 1,
	action: props && props.action ? props.action : 'mail/autocomplete',
	postdata: { _search:q, _source:'%s' },
	lock: this.display_message('searching', 'loading')
	});

	this.ksearch_data = { id:reqid, sources:sources.slice(), num:sources.length };
	};

	this.ksearch_query_results = function(results, search, reqid)
	{
	// trigger multi-thread http response callback
	this.multi_thread_http_response(results, reqid);

	// search stopped in meantime?
	if (!this.ksearch_value)
	return;

	// ignore this outdated search response
	if (this.ksearch_input && search != this.ksearch_value)
	return;

	// display search results
	var i, id, len, ul, text, type, init,
	is_framed = this.is_framed(),
	value = this.ksearch_value,
	maxlen = this.env.autocomplete_max ? this.env.autocomplete_max : 15;

	// create results pane if not present
	if (!this.ksearch_pane) {
	ul = $('<ul>');
	this.ksearch_pane = $('<div>')
	.attr({id: 'rcmKSearchpane', role: 'listbox'})
	.css({position: 'absolute', 'z-index': 30000})
	.append(ul)
	.appendTo(is_framed ? parent.document.body : document.body);

	this.ksearch_pane.__ul = ul[0];
	this.triggerEvent('autocomplete_create', {obj: this.ksearch_pane});
	}

	ul = this.ksearch_pane.__ul;

	// remove all search results or add to existing list if parallel search
	if (reqid && this.ksearch_pane.data('reqid') == reqid) {
	maxlen -= ul.childNodes.length;
	}
	else {
	this.ksearch_pane.data('reqid', reqid);
	init = 1;
	// reset content
	ul.innerHTML = '';
	this.env.contacts = [];

	// Calculate the results pane position and size
	var pos = $(this.ksearch_input).offset();

	// ... consider scroll position
	pos.left -= $(document.documentElement).scrollLeft();
	pos.top -= $(document.documentElement).scrollTop();

	// ... consider iframe position
	if (is_framed) {
	try {
	parent.$('iframe').each(function() {
	if (this.contentWindow == window) {
	var offset = $(this).offset();
	pos.left += offset.left;
	pos.top += offset.top;
	}
	});
	}
	catch(e) {}
	}

	var w = $(is_framed ? parent : window).width(),
	left = w - pos.left > 200 ? pos.left : w - 200,
	width = Math.min(400, w - left);

	this.ksearch_pane.css({
	left: left + 'px',
	top: (pos.top + this.ksearch_input.offsetHeight + 1) + 'px',
	maxWidth: width + 'px',
	minWidth: '200px',
	display: 'none'
	});
	}

	// add each result line to list
	if (results && (len = results.length)) {
	for (i=0; i < len && maxlen > 0; i++) {
	text = typeof results[i] === 'object' ? (results[i].display \|\| results[i].name) : results[i];
	type = typeof results[i] === 'object' ? results[i].type : '';
	id = i + this.env.contacts.length;
	$('<li>').attr('id', 'rcmkSearchItem' + id)
	.attr('role', 'option')
	.html('<i class="icon"></i>' + this.quote_html(text.replace(new RegExp('('+RegExp.escape(value)+')', 'ig'), '##$1%%')).replace(/##([^%]+)%%/g, '<b>$1</b>'))
	.addClass(type \|\| '')
	.appendTo(ul)
	.mouseover(function() { ref.ksearch_select(this); })
	.mouseup(function() { ref.ksearch_click(this); })
	.get(0)._rcm_id = id;
	maxlen -= 1;
	}
	}

	if (ul.childNodes.length) {
	// set the right aria-* attributes to the input field
	$(this.ksearch_input)
	.attr('aria-haspopup', 'true')
	.attr('aria-expanded', 'true')
	.attr('aria-owns', 'rcmKSearchpane');

	this.ksearch_pane.show();

	// select the first
	if (!this.env.contacts.length) {
	- this.ksearch_select($('li:first', ul).get(0));
	+ this.ksearch_select($('li', ul)[0]);
	}
	}

	if (len)
	this.env.contacts = this.env.contacts.concat(results);

	if (this.ksearch_data.id == reqid)
	this.ksearch_data.num--;
	};

	// Getter for input value
	// returns a string from the last comma to current cursor position
	this.ksearch_input_get = function()
	{
	if (!this.ksearch_input)
	return '';

	var cp = this.get_caret_pos(this.ksearch_input);

	return this.ksearch_input.value.substr(0, cp).split(/[,;]/).pop();
	};

	// Setter for input value
	// replaces 'from' string with 'to' and sets cursor position at the end
	this.ksearch_input_replace = function(from, to, input)
	{
	if (!this.ksearch_input && !input)
	return;

	if (!input)
	input = this.ksearch_input;

	var cpos = this.get_caret_pos(input),
	p = input.value.lastIndexOf(from, cpos),
	pre = input.value.substring(0, p),
	end = input.value.substring(p + from.length, input.value.length);

	input.value = pre + to + end;

	// set caret to insert pos
	this.set_caret_pos(input, p + to.length);

	// run onchange action on the element
	$(input).change();
	};

	this.ksearch_click = function(node)
	{
	if (this.ksearch_input)
	this.ksearch_input.focus();

	this.insert_recipient(node._rcm_id);
	this.ksearch_hide();
	};

	this.ksearch_blur = function()
	{
	if (this.ksearch_timer)
	clearTimeout(this.ksearch_timer);

	this.ksearch_input = null;
	this.ksearch_hide();
	};

	this.ksearch_hide = function()
	{
	this.ksearch_selected = null;
	this.ksearch_value = '';

	if (this.ksearch_pane)
	this.ksearch_pane.hide();

	$(this.ksearch_input)
	.attr('aria-haspopup', 'false')
	.attr('aria-expanded', 'false')
	.removeAttr('aria-activedescendant')
	.removeAttr('aria-owns');

	this.ksearch_destroy();
	};

	// Clears autocomplete data/requests
	this.ksearch_destroy = function()
	{
	if (this.ksearch_data)
	this.multi_thread_request_abort(this.ksearch_data.id);

	if (this.ksearch_info)
	this.hide_message(this.ksearch_info);

	if (this.ksearch_msg)
	this.hide_message(this.ksearch_msg);

	this.ksearch_data = null;
	this.ksearch_info = null;
	this.ksearch_msg = null;
	};


	/*********************************************************/
	/******* address book methods *******/
	/*********************************************************/

	this.contactlist_keypress = function(list)
	{
	if (list.key_pressed == list.DELETE_KEY)
	this.command('delete');
	};

	this.contactlist_select = function(list)
	{
	if (this.preview_timer)
	clearTimeout(this.preview_timer);

	var id, targets, groupcount = 0, writable = false, copy_writable = false,
	selected = list.get_selection().length,
	source = this.env.source ? this.env.address_sources[this.env.source] : null;

	// we don't have dblclick handler here, so use 50 instead of this.dblclick_time
	if (this.env.contentframe && !list.multi_selecting && (id = list.get_single_selection()))
	this.preview_timer = setTimeout(function() { ref.load_contact(id, 'show'); }, this.preview_delay_click);
	else if (this.env.contentframe)
	this.show_contentframe(false);

	if (selected) {
	list.draggable = false;

	// no source = search result, we'll need to detect if any of
	// selected contacts are in writable addressbook to enable edit/delete
	// we'll also need to know sources used in selection for copy
	// and group-addmember operations (drag&drop)
	this.env.selection_sources = [];

	if (source) {
	this.env.selection_sources.push(this.env.source);
	}

	$.each(list.get_selection(), function(i, v) {
	var sid, contact = list.data[v];
	if (!source) {
	sid = String(v).replace(/^[^-]+-/, '');
	if (sid && ref.env.address_sources[sid]) {
	writable = writable \|\| (!ref.env.address_sources[sid].readonly && !contact.readonly);
	ref.env.selection_sources.push(sid);
	}
	}
	else {
	writable = writable \|\| (!source.readonly && !contact.readonly);
	}

	if (contact._type != 'group')
	list.draggable = true;
	});

	this.env.selection_sources = $.unique(this.env.selection_sources);

	if (source && source.groups)
	$.each(this.env.contactgroups, function() { if (this.source === ref.env.source) groupcount++; });

	targets = $.map(this.env.address_sources, function(v, i) { return v.readonly ? null : i; });
	copy_writable = $.grep(targets, function(v) { return jQuery.inArray(v, ref.env.selection_sources) < 0; }).length > 0;
	}

	// if a group is currently selected, and there is at least one contact selected
	// we can enable the group-remove-selected command
	this.enable_command('group-assign-selected', groupcount > 0 && writable);
	this.enable_command('group-remove-selected', this.env.group && writable);
	this.enable_command('print', 'qrcode', selected == 1);
	this.enable_command('export-selected', selected > 0);
	this.enable_command('edit', id && writable);
	this.enable_command('delete', 'move', writable);
	this.enable_command('copy', copy_writable);

	return false;
	};

	this.list_contacts = function(src, group, page, search)
	{
	var win, folder, index = -1, url = {},
	refresh = src === undefined && group === undefined && page === undefined,
	target = window;

	if (!src)
	src = this.env.source;

	if (refresh)
	group = this.env.group;

	if (src != this.env.source) {
	page = this.env.current_page = 1;
	this.reset_qsearch();
	}
	else if (!refresh && group != this.env.group)
	page = this.env.current_page = 1;

	if (this.env.search_id)
	folder = 'S'+this.env.search_id;
	else if (!this.env.search_request)
	folder = group ? 'G'+src+group : src;

	this.env.source = src;
	this.env.group = group;

	// truncate groups listing stack
	$.each(this.env.address_group_stack, function(i, v) {
	if (ref.env.group == v.id) {
	index = i;
	return false;
	}
	});

	this.env.address_group_stack = index < 0 ? [] : this.env.address_group_stack.slice(0, index);

	// remove cached contact group selector
	this.destroy_entity_selector('contactgroup-selector');

	// make sure the current group is on top of the stack
	if (this.env.group) {
	if (!search) search = {};
	search.id = this.env.group;
	this.env.address_group_stack.push(search);

	// mark the first group on the stack as selected in the directory list
	folder = 'G'+src+this.env.address_group_stack[0].id;
	}
	else if (this.gui_objects.addresslist_title) {
	$(this.gui_objects.addresslist_title).text(this.get_label('contacts'));
	}

	if (!this.env.search_id)
	this.select_folder(folder, '', true);

	// load contacts remotely
	if (this.gui_objects.contactslist) {
	this.list_contacts_remote(src, group, page);
	return;
	}

	if (win = this.get_frame_window(this.env.contentframe)) {
	target = win;
	url._framed = 1;
	}

	if (group)
	url._gid = group;
	if (page)
	url._page = page;
	if (src)
	url._source = src;

	// also send search request to get the correct listing
	if (this.env.search_request)
	url._search = this.env.search_request;

	this.set_busy(true, 'loading');
	this.location_href(url, target);
	};

	// send remote request to load contacts list
	this.list_contacts_remote = function(src, group, page)
	{
	// clear message list first
	this.list_contacts_clear();

	// send request to server
	var url = {}, lock = this.set_busy(true, 'loading');

	if (src)
	url._source = src;
	if (page)
	url._page = page;
	if (group)
	url._gid = group;

	this.env.source = src;
	this.env.group = group;

	// also send search request to get the right records
	if (this.env.search_request)
	url._search = this.env.search_request;

	this.http_request(this.env.task == 'mail' ? 'list-contacts' : 'list', url, lock);

	if (this.env.task != 'mail')
	this.update_state({_source: src, _page: page && page > 1 ? page : null, _gid: group});
	};

	this.list_contacts_clear = function()
	{
	this.contact_list.data = {};
	this.contact_list.clear(true);
	this.show_contentframe(false);
	this.enable_command('delete', 'move', 'copy', 'print', false);
	};

	this.set_group_prop = function(prop)
	{
	if (this.gui_objects.addresslist_title) {
	var boxtitle = $(this.gui_objects.addresslist_title).html(''); // clear contents

	// add link to pop back to parent group
	if (this.env.address_group_stack.length > 1
	\|\| (this.env.address_group_stack.length == 1 && this.env.address_group_stack[0].search_request)
	) {
	$('<a href="#list">...</a>')
	.attr('title', this.get_label('uponelevel'))
	.addClass('poplink')
	.appendTo(boxtitle)
	.click(function(e){ return ref.command('popgroup','',this); });
	boxtitle.append(' » ');
	}

	boxtitle.append($('<span>').text(prop ? prop.name : this.get_label('contacts')));
	}
	};

	// load contact record
	this.load_contact = function(cid, action, framed)
	{
	var win, url = {}, target = window,
	rec = this.contact_list ? this.contact_list.data[cid] : null;

	if (win = this.get_frame_window(this.env.contentframe)) {
	url._framed = 1;
	target = win;
	this.show_contentframe(true);

	// load dummy content, unselect selected row(s)
	if (!cid)
	this.contact_list.clear_selection();

	this.enable_command('export-selected', 'print', rec && rec._type != 'group');
	}
	else if (framed)
	return false;

	if (action && (cid \|\| action == 'add') && !this.drag_active) {
	if (this.env.group)
	url._gid = this.env.group;

	if (this.env.search_request)
	url._search = this.env.search_request;

	url._action = action;
	url._source = this.env.source;
	url._cid = cid;

	this.location_href(url, target, true);
	}

	return true;
	};

	// add/delete member to/from the group
	this.group_member_change = function(what, cid, source, gid)
	{
	if (what != 'add')
	what = 'del';

	var lock = this.display_message(what == 'add' ? 'addingmember' : 'removingmember', 'loading'),
	post_data = {_cid: cid, _source: source, _gid: gid};

	this.http_post('group-'+what+'members', post_data, lock);
	};

	this.contacts_drag_menu = function(e, to)
	{
	var dest = to.type == 'group' ? to.source : to.id,
	source = this.env.source;

	if (!this.env.address_sources[dest] \|\| this.env.address_sources[dest].readonly)
	return true;

	// search result may contain contacts from many sources, but if there is only one...
	if (source == '' && this.env.selection_sources.length == 1)
	source = this.env.selection_sources[0];

	if (to.type == 'group' && dest == source) {
	var cid = this.contact_list.get_selection().join(',');
	this.group_member_change('add', cid, dest, to.id);
	return true;
	}
	// move action is not possible, "redirect" to copy if menu wasn't requested
	else if (!this.commands.move && rcube_event.get_modifier(e) != SHIFT_KEY) {
	this.copy_contacts(to);
	return true;
	}

	return this.drag_menu(e, to);
	};

	// copy contact(s) to the specified target (group or directory)
	this.copy_contacts = function(to, event, cid)
	{
	if (!to) {
	cid = this.contact_list.get_selection();
	return this.addressbook_selector(event, function(to, obj) {
	var to = $(obj).data('source') ? ref.env.contactgroups['G' + $(obj).data('source') + $(obj).data('gid')] : ref.env.address_sources[to];
	ref.copy_contacts(to, null, cid);
	});
	}

	var dest = to.type == 'group' ? to.source : to.id,
	source = this.env.source,
	group = this.env.group ? this.env.group : '';

	cid = cid ? cid.join(',') : this.contact_list.get_selection().join(',');

	if (!cid \|\| !this.env.address_sources[dest] \|\| this.env.address_sources[dest].readonly)
	return;

	// search result may contain contacts from many sources, but if there is only one...
	if (source == '' && this.env.selection_sources.length == 1)
	source = this.env.selection_sources[0];

	// tagret is a group
	if (to.type == 'group') {
	if (dest == source)
	return;

	var lock = this.display_message('copyingcontact', 'loading'),
	post_data = {_cid: cid, _source: this.env.source, _to: dest, _togid: to.id, _gid: group};

	this.http_post('copy', post_data, lock);
	}
	// target is an addressbook
	else if (to.id != source) {
	var lock = this.display_message('copyingcontact', 'loading'),
	post_data = {_cid: cid, _source: this.env.source, _to: to.id, _gid: group};

	this.http_post('copy', post_data, lock);
	}
	};

	// move contact(s) to the specified target (group or directory)
	this.move_contacts = function(to, event, cid)
	{
	if (!to) {
	cid = this.contact_list.get_selection();
	return this.addressbook_selector(event, function(to, obj) {
	var to = $(obj).data('source') ? ref.env.contactgroups['G' + $(obj).data('source') + $(obj).data('gid')] : ref.env.address_sources[to];
	ref.move_contacts(to, null, cid);
	});
	}

	var dest = to.type == 'group' ? to.source : to.id,
	source = this.env.source,
	group = this.env.group ? this.env.group : '';

	if (!this.env.address_sources[dest] \|\| this.env.address_sources[dest].readonly)
	return;

	// search result may contain contacts from many sources, but if there is only one...
	if (source == '' && this.env.selection_sources.length == 1)
	source = this.env.selection_sources[0];

	if (to.type == 'group') {
	if (dest == source)
	return;

	this._with_selected_contacts('move', {_to: dest, _togid: to.id, _cid: cid});
	}
	// target is an addressbook
	else if (to.id != source)
	this._with_selected_contacts('move', {_to: to.id, _cid: cid});
	};

	// delete contact(s)
	this.delete_contacts = function()
	{
	var undelete = this.env.source && this.env.address_sources[this.env.source].undelete;

	if (undelete) {
	this._with_selected_contacts('delete', {_cid: this.contact_list.get_selection()});
	}
	else {
	var cid = this.contact_list.get_selection();
	this.confirm_dialog(this.get_label('deletecontactconfirm'), 'delete', function() {
	ref._with_selected_contacts('delete', {_cid: cid});
	});
	}
	};

	this._with_selected_contacts = function(action, post_data)
	{
	var selection = post_data._cid;

	// exit if no contact specified or if selection is empty
	if (!selection.length && !this.env.cid)
	return;

	var n, a_cids = [],
	label = action == 'delete' ? 'contactdeleting' : 'movingcontact',
	lock = this.display_message(label, 'loading');

	if (this.env.cid)
	a_cids.push(this.env.cid);
	else {
	for (n=0; n<selection.length; n++) {
	id = selection[n];
	a_cids.push(id);
	this.contact_list.remove_row(id, (n == selection.length-1));
	}

	// hide content frame if we delete the currently displayed contact
	if (selection.length == 1)
	this.show_contentframe(false);
	}

	if (!post_data)
	post_data = {};

	post_data._source = this.env.source;
	post_data._from = this.env.action;
	post_data._cid = a_cids.join(',');

	if (this.env.group)
	post_data._gid = this.env.group;

	// also send search request to get the right records from the next page
	if (this.env.search_request)
	post_data._search = this.env.search_request;

	// send request to server
	this.http_post(action, post_data, lock)

	return true;
	};

	// update a contact record in the list
	this.update_contact_row = function(cid, cols_arr, newcid, source, data)
	{
	var list = this.contact_list;

	cid = this.html_identifier(cid);

	// when in searching mode, concat cid with the source name
	if (!list.rows[cid]) {
	cid = cid + '-' + source;
	if (newcid)
	newcid = newcid + '-' + source;
	}

	list.update_row(cid, cols_arr, newcid, true);
	list.data[cid] = data;
	};

	// add row to contacts list
	this.add_contact_row = function(cid, cols, classes, data)
	{
	if (!this.gui_objects.contactslist)
	return false;

	var c, col, list = this.contact_list,
	row = { cols:[] };

	row.id = 'rcmrow' + this.html_identifier(cid);
	row.className = 'contact ' + (classes \|\| '');

	if (list.in_selection(cid))
	row.className += ' selected';

	// add each submitted col
	for (c in cols) {
	col = {};
	col.className = String(c).toLowerCase();
	col.innerHTML = cols[c];
	row.cols.push(col);
	}

	// store data in list member
	list.data[cid] = data;
	list.insert_row(row);

	this.enable_command('export', list.rowcount > 0);
	};

	this.init_contact_form = function()
	{
	var col;

	if (this.env.coltypes) {
	this.set_photo_actions($('#ff_photo').val());
	for (col in this.env.coltypes)
	this.init_edit_field(col, null);
	}

	$('.contactfieldgroup .row a.deletebutton').click(function() {
	ref.delete_edit_field(this);
	return false;
	});

	$('select.addfieldmenu').change(function() {
	ref.insert_edit_field($(this).val(), $(this).attr('rel'), this);
	this.selectedIndex = 0;
	});

	// enable date pickers on date fields
	if ($.datepicker && this.env.date_format) {
	$.datepicker.setDefaults({
	dateFormat: this.env.date_format,
	changeMonth: true,
	changeYear: true,
	yearRange: '-120:+10',
	showOtherMonths: true,
	selectOtherMonths: true
	});
	$('input.datepicker').datepicker();
	}

	// Submit search form on Enter
	if (this.env.action == 'search')
	$(this.gui_objects.editform).append($('<input type="submit">').hide())
	.submit(function() { $('input.mainaction').click(); return false; });
	};

	// group creation dialog
	this.group_create = function()
	{
	var input = $('<input>').attr('type', 'text'),
	content = $('<label>').text(this.get_label('namex')).append(input),
	source = this.env.source;

	this.simple_dialog(content, 'newgroup', function() {
	var name;
	if (name = input.val()) {
	ref.http_post('group-create', {_source: source, _name: name},
	ref.set_busy(true, 'loading'));
	return true;
	}
	});
	};

	// group rename dialog
	this.group_rename = function()
	{
	if (!this.env.group)
	return;

	var group_name = this.env.contactgroups['G' + this.env.source + this.env.group].name,
	input = $('<input>').attr('type', 'text').val(group_name),
	content = $('<label>').text(this.get_label('namex')).append(input),
	source = this.env.source,
	group = this.env.group;

	this.simple_dialog(content, 'grouprename', function() {
	var name;
	if ((name = input.val()) && name != group_name) {
	ref.http_post('group-rename', {_source: source, _gid: group, _name: name},
	ref.set_busy(true, 'loading'));
	return true;
	}
	});
	};

	this.group_delete = function()
	{
	if (this.env.group) {
	var group = this.env.group;
	this.confirm_dialog(this.get_label('deletegroupconfirm'), 'delete', function() {
	var lock = ref.set_busy(true, 'groupdeleting');
	ref.http_post('group-delete', {_source: ref.env.source, _gid: group}, lock);
	});
	}
	};

	// callback from server upon group-delete command
	this.remove_group_item = function(prop)
	{
	var key = 'G'+prop.source+prop.id;

	if (this.treelist.remove(key)) {
	// make sure there is no cached address book or contact group selectors
	this.destroy_entity_selector('addressbook-selector');
	this.destroy_entity_selector('contactgroup-selector');

	this.triggerEvent('group_delete', { source:prop.source, id:prop.id });
	delete this.env.contactfolders[key];
	delete this.env.contactgroups[key];
	}

	if (prop.source == this.env.source && prop.id == this.env.group)
	this.list_contacts(prop.source, 0);
	};

	//assign selected contacts to a group
	this.group_assign_selected = function(props, obj, event)
	{
	var cid = ref.contact_list.get_selection();
	var source = ref.env.source;
	this.contactgroup_selector(event, function(to) { ref.group_member_change('add', cid, source, to); });
	};

	//remove selected contacts from current active group
	this.group_remove_selected = function()
	{
	this.http_post('group-delmembers', {_cid: this.contact_list.get_selection(),
	_source: this.env.source, _gid: this.env.group});
	};

	//callback after deleting contact(s) from current group
	this.remove_group_contacts = function(props)
	{
	if (this.env.group !== undefined && (this.env.group === props.gid)) {
	var n, selection = this.contact_list.get_selection();
	for (n=0; n<selection.length; n++) {
	id = selection[n];
	this.contact_list.remove_row(id, (n == selection.length-1));
	this.contact_list.clear_selection();
	}
	}
	};

	// callback for creating a new contact group
	this.insert_contact_group = function(prop)
	{
	prop.type = 'group';

	var key = 'G'+prop.source+prop.id,
	link = $('<a>').attr('href', '#')
	.attr('rel', prop.source+':'+prop.id)
	.click(function() { return ref.command('listgroup', prop, this); })
	.html(prop.name);

	this.env.contactfolders[key] = this.env.contactgroups[key] = prop;
	this.treelist.insert({ id:key, html:link, classes:['contactgroup'] }, prop.source, 'contactgroup');

	// make sure there is no cached address book or contact group selectors
	this.destroy_entity_selector('addressbook-selector');
	this.destroy_entity_selector('contactgroup-selector');

	this.triggerEvent('group_insert', { id:prop.id, source:prop.source, name:prop.name, li:this.treelist.get_item(key) });
	};

	// callback for renaming a contact group
	this.update_contact_group = function(prop)
	{
	var key = 'G'+prop.source+prop.id,
	newnode = {};

	// group ID has changed, replace link node and identifiers
	if (prop.newid) {
	var newkey = 'G'+prop.source+prop.newid,
	newprop = $.extend({}, prop);

	this.env.contactfolders[newkey] = this.env.contactfolders[key];
	this.env.contactfolders[newkey].id = prop.newid;
	this.env.group = prop.newid;

	delete this.env.contactfolders[key];
	delete this.env.contactgroups[key];

	newprop.id = prop.newid;
	newprop.type = 'group';

	newnode.id = newkey;
	newnode.html = $('<a>').attr('href', '#')
	.attr('rel', prop.source+':'+prop.newid)
	.click(function() { return ref.command('listgroup', newprop, this); })
	.html(prop.name);
	}
	// update displayed group name
	else {
	$(this.treelist.get_item(key)).children().first().html(prop.name);
	this.env.contactfolders[key].name = this.env.contactgroups[key].name = prop.name;

	if (prop.source == this.env.source && prop.id == this.env.group)
	this.set_group_prop(prop);
	}

	// update list node and re-sort it
	this.treelist.update(key, newnode, true);

	// make sure there is no cached address book or contact group selectors
	this.destroy_entity_selector('addressbook-selector');
	this.destroy_entity_selector('contactgroup-selector');

	this.triggerEvent('group_update', { id:prop.id, source:prop.source, name:prop.name, li:this.treelist.get_item(key), newid:prop.newid });
	};

	this.update_group_commands = function()
	{
	var source = this.env.source != '' ? this.env.address_sources[this.env.source] : null,
	supported = source && source.groups && !source.readonly;

	this.enable_command('group-create', supported);
	this.enable_command('group-rename', 'group-delete', supported && this.env.group);
	};

	this.init_edit_field = function(col, elem)
	{
	var label = this.env.coltypes[col].label;

	if (!elem)
	elem = $('.ff_' + col);

	if (label && !$('label[for="ff_' + col + '"]').length)
	elem.placeholder(label);
	};

	this.insert_edit_field = function(col, section, menu)
	{
	// just make pre-defined input field visible
	var elem = $('#ff_' + col);
	if (elem.length) {
	$('label[for="ff_' + col + '"]').parent().show();
	elem.show().focus();
	$(menu).children('option[value="' + col + '"]').prop('disabled', true);
	}
	else {
	var lastelem = $('.ff_' + col),
	appendcontainer = $('#contactsection'+section+' .contactcontroller'+col);

	if (!appendcontainer.length) {
	var sect = $('#contactsection'+section),
	lastgroup = $('.contactfieldgroup', sect).last();
	appendcontainer = $('<fieldset>').addClass('contactfieldgroup contactcontroller'+col);
	if (lastgroup.length)
	appendcontainer.insertAfter(lastgroup);
	else
	sect.prepend(appendcontainer);
	}

	if (appendcontainer.get(0).nodeName == 'FIELDSET') {
	var label, input,
	colprop = this.env.coltypes[col],
	name_suffix = colprop.limit != 1 ? '[]' : '',
	compact = $(menu).data('compact') ? true : false,
	input_id = 'ff_' + col + (colprop.count \|\| 0),
	row = $('<div>').addClass('row input-group'),
	cell = $('<div>').addClass('contactfieldcontent ' + colprop.type);

	// Field label
	if (colprop.subtypes_select) {
	label = $(colprop.subtypes_select);
	if (!compact)
	label = $('<div>').addClass('contactfieldlabel label').append(label);
	else
	label.addClass('input-group-prepend');
	}
	else {
	label = $('<label>').addClass('contactfieldlabel label input-group-text')
	.attr('for', input_id).text(colprop.label);

	if (compact)
	label = $('<span class="input-group-prepend">').append(label);
	}

	// Field input
	if (colprop.type == 'text' \|\| colprop.type == 'date') {
	input = $('<input>')
	.addClass('form-control ff_' + col)
	.attr({type: 'text', name: '_'+col+name_suffix, size: colprop.size, id: input_id});

	this.init_edit_field(col, input);

	if (colprop.type == 'date' && $.datepicker)
	input.addClass('datepicker').datepicker();
	}
	else if (colprop.type == 'textarea') {
	input = $('<textarea>')
	.addClass('form-control ff_' + col)
	.attr({ name: '_' + col + name_suffix, cols: colprop.size, rows: colprop.rows, id: input_id });

	this.init_edit_field(col, input);
	}
	else if (colprop.type == 'composite') {
	var i, childcol, cp, first, templ, cols = [], suffices = [], content = cell;

	row.addClass('composite');

	if (compact)
	content = $('<div class="content input-group-text">');

	// read template for composite field order
	if (templ = this.env[col + '_template']) {
	for (i=0; i < templ.length; i++) {
	cols.push(templ[i][1]);
	suffices.push(templ[i][2]);
	}
	}
	else { // list fields according to appearance in colprop
	for (childcol in colprop.childs)
	cols.push(childcol);
	}

	for (i=0; i < cols.length; i++) {
	childcol = cols[i];
	cp = colprop.childs[childcol];
	input = $('<input>')
	.addClass('form-control ff_' + childcol)
	.attr({ type: 'text', name: '_' + childcol + name_suffix, size: cp.size })
	.appendTo(content);

	if (!compact)
	content.append(suffices[i] \|\| " ");

	this.init_edit_field(childcol, input);
	if (!first) first = input;
	}

	if (compact)
	input = content;
	else
	input = first; // set focus to the first of this composite fields
	}
	else if (colprop.type == 'select') {
	input = $('<select>')
	.addClass('custom-select ff_' + col)
	.attr({ name: '_' + col + name_suffix, id: input_id });

	var options = input.attr('options');
	options[options.length] = new Option('---', '');
	if (colprop.options)
	$.each(colprop.options, function(i, val) { options[options.length] = new Option(val, i); });
	}

	if (input) {
	var delbutton = $('<a href="#del"></a>')
	.addClass('contactfieldbutton deletebutton input-group-text icon delete')
	.attr({title: this.get_label('delete'), rel: col})
	.html(this.env.delbutton)
	.click(function() { ref.delete_edit_field(this); return false; });

	row.append(label);

	if (!compact) {
	if (colprop.type != 'composite')
	cell.append(input);
	row.append(cell.append(delbutton));
	}
	else {
	row.append(input).append(delbutton);
	delbutton.wrap('<span class="input-group-append">');
	}

	row.appendTo(appendcontainer.show());

	if (input.is('div'))
	- input.find('input:first').focus();
	+ input.find('input').first().focus();
	else
	input.first().focus();

	// disable option if limit reached
	if (!colprop.count) colprop.count = 0;
	if (++colprop.count == colprop.limit && colprop.limit)
	$(menu).children('option[value="' + col + '"]').prop('disabled', true);

	this.triggerEvent('insert-edit-field', input);
	}
	}
	}
	};

	this.delete_edit_field = function(elem)
	{
	var col = $(elem).attr('rel'),
	colprop = this.env.coltypes[col],
	input_group = $(elem).parents('div.row'),
	fieldset = $(elem).parents('fieldset.contactfieldgroup'),
	addmenu = fieldset.parent().find('select.addfieldmenu');

	// just clear input but don't hide the last field
	if (--colprop.count <= 0 && colprop.visible)
	input_group.find('input').val('').blur();
	else {
	input_group.remove();
	// hide entire fieldset if no more rows
	if (!fieldset.children('div.row').length)
	fieldset.hide();
	}

	// enable option in add-field selector or insert it if necessary
	if (addmenu.length) {
	var option = addmenu.children('option[value="'+col+'"]');
	if (option.length)
	option.prop('disabled', false);
	else
	option = $('<option>').attr('value', col).html(colprop.label).appendTo(addmenu);
	addmenu.show();
	}
	};

	this.upload_contact_photo = function(form)
	{
	if (form && form.elements._photo.value) {
	this.async_upload_form(form, 'upload-photo', function(e) {
	ref.set_busy(false, null, ref.file_upload_id);
	});

	// display upload indicator
	this.file_upload_id = this.set_busy(true, 'uploading');
	}
	};

	this.replace_contact_photo = function(id)
	{
	var img_src = id == '-del-' ? this.env.photo_placeholder :
	this.env.comm_path + '&_action=photo&_source=' + this.env.source + '&_cid=' + (this.env.cid \|\| 0) + '&_photo=' + id;

	this.set_photo_actions(id);
	$(this.gui_objects.contactphoto).children('img').attr('src', img_src);
	};

	this.photo_upload_end = function()
	{
	this.set_busy(false, null, this.file_upload_id);
	delete this.file_upload_id;
	};

	this.set_photo_actions = function(id)
	{
	var n, buttons = this.buttons['upload-photo'];
	for (n=0; buttons && n < buttons.length; n++)
	$('a#'+buttons[n].id).html(this.get_label(id == '-del-' ? 'addphoto' : 'replacephoto'));

	$('#ff_photo').val(id);
	this.enable_command('upload-photo', this.env.coltypes.photo ? true : false);
	this.enable_command('delete-photo', this.env.coltypes.photo && id != '-del-');
	};

	// load advanced search page
	this.advanced_search = function()
	{
	var dialog = $('<iframe>').attr('src', this.url('search', {_form: 1, _framed: 1})),
	search_func = function() {
	var valid = false, form = {_adv: 1};

	$.each($(dialog[0].contentWindow.rcmail.gui_objects.editform).serializeArray(), function() {
	if (this.name.match(/^_search/) && this.value != '') {
	form[this.name] = this.value;
	valid = true;
	}
	});

	if (valid) {
	ref.http_post('search', form, ref.set_busy(true, 'searching'));
	return true;
	}
	};

	this.simple_dialog(dialog, this.gettext('advsearch'), search_func, {
	button: 'search',
	width: 600,
	height: 500
	});

	return true;
	};

	// unselect directory/group
	this.unselect_directory = function()
	{
	this.select_folder('');
	this.enable_command('search-delete', false);
	};

	// callback for creating a new saved search record
	this.insert_saved_search = function(name, id)
	{
	var key = 'S'+id,
	link = $('<a>').attr('href', '#')
	.attr('rel', id)
	.click(function() { return ref.command('listsearch', id, this); })
	.html(name),
	prop = { name:name, id:id };

	this.savedsearchlist.insert({ id:key, html:link, classes:['contactsearch'] }, null, 'contactsearch');
	this.select_folder(key,'',true);
	this.enable_command('search-delete', true);
	this.env.search_id = id;

	this.triggerEvent('abook_search_insert', prop);
	};

	// creates a dialog for saved search
	this.search_create = function()
	{
	var input = $('<input>').attr('type', 'text'),
	content = $('<label>').text(this.get_label('namex')).append(input);

	this.simple_dialog(content, 'searchsave',
	function() {
	var name;
	if (name = input.val()) {
	ref.http_post('search-create', {_search: ref.env.search_request, _name: name},
	ref.set_busy(true, 'loading'));
	return true;
	}
	}
	);
	};

	this.search_delete = function()
	{
	if (this.env.search_request) {
	var lock = this.set_busy(true, 'savedsearchdeleting');
	this.http_post('search-delete', {_sid: this.env.search_id}, lock);
	}
	};

	// callback from server upon search-delete command
	this.remove_search_item = function(id)
	{
	var li, key = 'S'+id;
	if (this.savedsearchlist.remove(key)) {
	this.triggerEvent('search_delete', { id:id, li:li });
	}

	this.env.search_id = null;
	this.env.search_request = null;
	this.list_contacts_clear();
	this.reset_qsearch();
	this.enable_command('search-delete', 'search-create', false);
	};

	this.listsearch = function(id)
	{
	var lock = this.set_busy(true, 'searching');

	if (this.contact_list) {
	this.list_contacts_clear();
	}

	this.reset_qsearch();

	if (this.savedsearchlist) {
	this.treelist.select('');
	this.savedsearchlist.select('S'+id);
	}
	else
	this.select_folder('S'+id, '', true);

	// reset vars
	this.env.current_page = 1;
	this.http_request('search', {_sid: id}, lock);
	};

	// display a dialog with QR code image
	this.qrcode = function()
	{
	var title = this.get_label('qrcode'),
	options = {button: false, cancel_button: 'close', width: 300, height: 300},
	img = new Image(300, 300);

	img.src = this.url('addressbook/qrcode', {_source: this.env.source, _cid: this.get_single_cid()});

	return this.simple_dialog(img, title, null, options);
	};


	/*********************************************************/
	/******* user settings methods *******/
	/*********************************************************/

	// preferences section select and load options frame
	this.section_select = function(list)
	{
	var win, id = list.get_single_selection();

	if (id && (win = this.get_frame_window(this.env.contentframe))) {
	this.location_href({_action: 'edit-prefs', _section: id, _framed: 1}, win, true);
	}
	};

	this.response_select = function(list)
	{
	var id = list.get_single_selection();

	this.enable_command('delete', !!id && $.inArray(id, this.env.readonly_responses) < 0);

	if (id) {
	this.load_response(id, 'edit-response');
	}
	};

	// load response record
	this.load_response = function(id, action)
	{
	var win;

	if (win = this.get_frame_window(this.env.contentframe)) {
	if (id \|\| action == 'add-response') {
	if (!id)
	this.responses_list.clear_selection();

	this.location_href({_action: action, _key: id, _framed: 1}, win, true);
	}
	}
	};

	this.identity_select = function(list)
	{
	var id = list.get_single_selection();

	this.enable_command('delete', !!id && list.rowcount > 1 && this.env.identities_level < 2);

	if (id) {
	this.load_identity(id, 'edit-identity');
	}
	};

	// load identity record
	this.load_identity = function(id, action)
	{
	var win;

	if (win = this.get_frame_window(this.env.contentframe)) {
	if (id \|\| action == 'add-identity') {
	if (!id)
	this.identity_list.clear_selection();

	this.location_href({_action: action, _iid: id, _framed: 1}, win, true);
	}
	}
	};

	this.delete_identity = function(id)
	{
	// exit if no identity is specified or if selection is empty
	var selection = this.identity_list.get_selection();
	if (!(selection.length \|\| this.env.iid))
	return;

	if (!id)
	id = this.env.iid ? this.env.iid : selection[0];

	// submit request with appended token
	if (id) {
	this.confirm_dialog(this.get_label('deleteidentityconfirm'), 'delete', function() {
	ref.http_post('settings/delete-identity', { _iid: id }, true);
	});
	}
	};

	this.update_identity_row = function(id, name, add)
	{
	var list = this.identity_list,
	rid = this.html_identifier(id);

	if (add) {
	list.insert_row({ id:'rcmrow'+rid, cols:[ { className:'mail', innerHTML:name } ] });
	list.select(rid);
	}
	else {
	list.update_row(rid, [ name ]);
	}
	};

	this.update_response_row = function(response, oldkey)
	{
	var list = this.responses_list;

	if (list && oldkey) {
	list.update_row(oldkey, [ response.name ], response.key, true);
	}
	else if (list) {
	list.insert_row({ id:'rcmrow'+response.key, cols:[ { className:'name', innerHTML:response.name } ] });
	list.select(response.key);
	}
	};

	this.remove_response = function(key)
	{
	var frame;

	if (this.env.textresponses) {
	delete this.env.textresponses[key];
	}

	if (this.responses_list) {
	this.responses_list.remove_row(key);
	this.show_contentframe(false);
	}

	this.enable_command('delete', false);
	};

	this.remove_identity = function(id)
	{
	var frame, list = this.identity_list,
	rid = this.html_identifier(id);

	if (list && id) {
	list.remove_row(rid);
	this.show_contentframe(false);
	}

	this.enable_command('delete', false);
	};


	/*********************************************************/
	/******* folder manager methods *******/
	/*********************************************************/

	this.init_subscription_list = function()
	{
	var delim = RegExp.escape(this.env.delimiter);

	this.last_sub_rx = RegExp('['+delim+']?[^'+delim+']+$');

	this.subscription_list = new rcube_treelist_widget(this.gui_objects.subscriptionlist, {
	selectable: true,
	tabexit: false,
	parent_focus: true,
	id_prefix: 'rcmli',
	id_encode: this.html_identifier_encode,
	id_decode: this.html_identifier_decode,
	searchbox: '#foldersearch'
	});

	this.subscription_list
	.addEventListener('select', function(node) { ref.subscription_select(node.id); })
	.addEventListener('collapse', function(node) { ref.folder_collapsed(node) })
	.addEventListener('expand', function(node) { ref.folder_collapsed(node) })
	.addEventListener('search', function(p) { if (p.query) ref.subscription_select(); })
	.draggable({cancel: 'li.mailbox.root,input,div.treetoggle'})
	.droppable({
	// @todo: find better way, accept callback is executed for every folder
	// on the list when dragging starts (and stops), this is slow, but
	// I didn't find a method to check droptarget on over event
	accept: function(node) {
	if (!node.is('.mailbox'))
	return false;

	var source_folder = ref.folder_id2name(node.attr('id')),
	dest_folder = ref.folder_id2name(this.id),
	source = ref.env.subscriptionrows[source_folder],
	dest = ref.env.subscriptionrows[dest_folder];

	return source && !source[2]
	&& dest_folder != source_folder.replace(ref.last_sub_rx, '')
	&& !dest_folder.startsWith(source_folder + ref.env.delimiter);
	},
	drop: function(e, ui) {
	var source = ref.folder_id2name(ui.draggable.attr('id')),
	dest = ref.folder_id2name(this.id);

	ref.subscription_move_folder(source, dest);
	}
	});
	};

	this.folder_id2name = function(id)
	{
	return id ? ref.html_identifier_decode(id.replace(/^rcmli/, '')) : null;
	};

	this.subscription_select = function(id)
	{
	var folder;

	if (id && id != '*' && (folder = this.env.subscriptionrows[id])) {
	this.env.mailbox = id;
	this.show_folder(id);
	this.enable_command('delete-folder', !folder[2]);
	}
	else {
	this.env.mailbox = null;
	this.show_contentframe(false);
	this.enable_command('delete-folder', 'purge', false);
	}
	};

	this.subscription_move_folder = function(from, to)
	{
	if (from && to !== null && from != to && to != from.replace(this.last_sub_rx, '')) {
	var path = from.split(this.env.delimiter),
	basename = path.pop(),
	newname = to === '' \|\| to === '*' ? basename : to + this.env.delimiter + basename;

	if (newname != from) {
	this.confirm_dialog(this.get_label('movefolderconfirm'), 'move', function() {
	ref.http_post('rename-folder', {_folder_oldname: from, _folder_newname: newname},
	ref.set_busy(true, 'foldermoving'));
	}, {button_class: 'save move'});
	}
	}
	};

	// tell server to create and subscribe a new mailbox
	this.create_folder = function()
	{
	this.show_folder('', this.env.mailbox);
	};

	// delete a specific mailbox with all its messages
	this.delete_folder = function(name)
	{
	if (!name)
	name = this.env.mailbox;

	if (name) {
	this.confirm_dialog(this.get_label('deletefolderconfirm'), 'delete', function() {
	ref.http_post('delete-folder', {_mbox: name}, ref.set_busy(true, 'folderdeleting'));
	});
	}
	};

	// Add folder row to the table and initialize it
	this.add_folder_row = function (id, name, display_name, is_protected, subscribed, class_name, refrow, subfolders)
	{
	if (!this.gui_objects.subscriptionlist)
	return false;

	// reset searching
	if (this.subscription_list.is_search()) {
	this.subscription_select();
	this.subscription_list.reset_search();
	}

	// disable drag-n-drop temporarily
	// some skins disable dragging in mobile mode, so we have to check if it is still draggable
	if (this.subscription_list.is_draggable())
	this.subscription_list.draggable('destroy').droppable('destroy');

	var row, n, tmp, tmp_name, rowid, collator, pos, p, parent = '',
	folders = [], list = [], slist = [],
	list_element = $(this.gui_objects.subscriptionlist);
	row = refrow ? refrow : $($('li', list_element).get(1)).clone(true);

	if (!row.length) {
	// Refresh page if we don't have a table row to clone
	this.goto_url('folders');
	return false;
	}

	// set ID, reset css class
	row.attr({id: 'rcmli' + this.html_identifier_encode(id), 'class': class_name});

	if (!refrow \|\| !refrow.length) {
	// remove old data, subfolders and toggle
	$('ul,div.treetoggle', row).remove();
	row.removeData('filtered');
	}

	// set folder name
	- $('a:first', row).text(display_name).removeAttr('title');
	+ $('a', row).first().text(display_name).removeAttr('title');

	// update subscription checkbox
	- $('input[name="_subscribed[]"]:first', row).val(id)
	+ $('input[name="_subscribed[]"]', row).first().val(id)
	.prop({checked: subscribed ? true : false, disabled: is_protected ? true : false});

	// add to folder/row-ID map
	this.env.subscriptionrows[id] = [name, display_name, false];

	// copy folders data to an array for sorting
	$.each(this.env.subscriptionrows, function(k, v) { v[3] = k; folders.push(v); });

	try {
	// use collator if supported (FF29, IE11, Opera15, Chrome24)
	collator = new Intl.Collator(this.env.locale.replace('_', '-'));
	}
	catch (e) {};

	// sort folders
	folders.sort(function(a, b) {
	var i, f1, f2,
	path1 = a[0].split(ref.env.delimiter),
	path2 = b[0].split(ref.env.delimiter),
	len = path1.length;

	for (i=0; i<len; i++) {
	f1 = path1[i];
	f2 = path2[i];

	if (f1 !== f2) {
	if (f2 === undefined)
	return 1;
	if (collator)
	return collator.compare(f1, f2);
	else
	return f1 < f2 ? -1 : 1;
	}
	else if (i == len-1) {
	return -1
	}
	}
	});

	for (n in folders) {
	p = folders[n][3];
	// protected folder
	if (folders[n][2]) {
	tmp_name = p + this.env.delimiter;
	// prefix namespace cannot have subfolders (#1488349)
	if (tmp_name == this.env.prefix_ns)
	continue;
	slist.push(p);
	tmp = tmp_name;
	}
	// protected folder's child
	else if (tmp && p.startsWith(tmp))
	slist.push(p);
	// other
	else {
	list.push(p);
	tmp = null;
	}
	}

	// check if subfolder of a protected folder
	for (n=0; n<slist.length; n++) {
	if (id.startsWith(slist[n] + this.env.delimiter))
	rowid = slist[n];
	}

	// find folder position after sorting
	for (n=0; !rowid && n<list.length; n++) {
	if (n && list[n] == id)
	rowid = list[n-1];
	}

	// add row to the table
	if (rowid && (n = this.subscription_list.get_item(rowid, true))) {
	// find parent folder
	if (pos = id.lastIndexOf(this.env.delimiter)) {
	parent = id.substring(0, pos);
	parent = this.subscription_list.get_item(parent, true);

	// add required tree elements to the parent if not already there
	if (!$('div.treetoggle', parent).length) {
	$('<div> </div>').addClass('treetoggle collapsed').appendTo(parent);
	}
	if (!$('ul', parent).length) {
	$('<ul>').css('display', 'none').appendTo(parent);
	}
	}

	if (parent && n == parent) {
	- $('ul:first', parent).append(row);
	+ $('ul', parent).first().append(row);
	}
	else {
	while (p = $(n).parent().parent().get(0)) {
	if (parent && p == parent)
	break;
	if (!$(p).is('li.mailbox'))
	break;
	n = p;
	}

	$(n).after(row);
	}
	}
	else {
	list_element.append(row);
	}

	// add subfolders
	$.extend(this.env.subscriptionrows, subfolders \|\| {});

	// update list widget
	this.subscription_list.reset(true);
	this.subscription_select();

	// expand parent
	if (parent) {
	this.subscription_list.expand(this.folder_id2name(parent.id));
	}

	row = row.show().get(0);
	if (row.scrollIntoView)
	row.scrollIntoView(false);

	return row;
	};

	// replace an existing table row with a new folder line (with subfolders)
	this.replace_folder_row = function(oldid, id, name, display_name, is_protected, class_name)
	{
	if (!this.gui_objects.subscriptionlist) {
	if (this.is_framed()) {
	// @FIXME: for some reason this 'parent' variable need to be prefixed with 'window.'
	return window.parent.rcmail.replace_folder_row(oldid, id, name, display_name, is_protected, class_name);
	}

	return false;
	}

	// reset searching
	if (this.subscription_list.is_search()) {
	this.subscription_select();
	this.subscription_list.reset_search();
	}

	var subfolders = {},
	row = this.subscription_list.get_item(oldid, true),
	parent = $(row).parent(),
	old_folder = this.env.subscriptionrows[oldid],
	prefix_len_id = oldid.length,
	prefix_len_name = old_folder[0].length,
	- subscribed = $('input[name="_subscribed[]"]:first', row).prop('checked');
	+ subscribed = $('input[name="_subscribed[]"]', row).first().prop('checked');

	// no renaming, only update class_name
	if (oldid == id) {
	$(row).attr('class', class_name \|\| '');
	return;
	}

	// update subfolders
	$('li', row).each(function() {
	var fname = ref.folder_id2name(this.id),
	folder = ref.env.subscriptionrows[fname],
	newid = id + fname.slice(prefix_len_id);

	this.id = 'rcmli' + ref.html_identifier_encode(newid);
	- $('input[name="_subscribed[]"]:first', this).val(newid);
	+ $('input[name="_subscribed[]"]', this).first().val(newid);
	folder[0] = name + folder[0].slice(prefix_len_name);

	subfolders[newid] = folder;
	delete ref.env.subscriptionrows[fname];
	});

	// get row off the list
	row = $(row).detach();

	delete this.env.subscriptionrows[oldid];

	// remove parent list/toggle elements if not needed
	if (parent.get(0) != this.gui_objects.subscriptionlist && !$('li', parent).length) {
	$('ul,div.treetoggle', parent.parent()).remove();
	}

	// move the existing table row
	this.add_folder_row(id, name, display_name, is_protected, subscribed, class_name, row, subfolders);
	};

	// remove the table row of a specific mailbox from the table
	this.remove_folder_row = function(folder)
	{
	// reset searching
	if (this.subscription_list.is_search()) {
	this.subscription_select();
	this.subscription_list.reset_search();
	}

	var list = [], row = this.subscription_list.get_item(folder, true);

	// get subfolders if any
	$('li', row).each(function() { list.push(ref.folder_id2name(this.id)); });

	// remove folder row (and subfolders)
	this.subscription_list.remove(folder);

	// update local list variable
	list.push(folder);
	$.each(list, function(i, v) { delete ref.env.subscriptionrows[v]; });
	};

	this.subscribe = function(folder)
	{
	if (folder) {
	var lock = this.display_message('foldersubscribing', 'loading');
	this.http_post('subscribe', {_mbox: folder}, lock);
	}
	};

	this.unsubscribe = function(folder)
	{
	if (folder) {
	var lock = this.display_message('folderunsubscribing', 'loading');
	this.http_post('unsubscribe', {_mbox: folder}, lock);
	}
	};

	// when user select a folder in manager
	this.show_folder = function(folder, path, force)
	{
	var win, target = window,
	action = folder === '' ? 'add' : 'edit',
	url = '&_action=' + action + '-folder&_mbox=' + urlencode(folder);

	if (path)
	url += '&_path='+urlencode(path);

	if (win = this.get_frame_window(this.env.contentframe)) {
	target = win;
	url += '&_framed=1';
	}

	if (String(target.location.href).indexOf(url) >= 0 && !force)
	this.show_contentframe(true);
	else
	this.location_href(this.env.comm_path+url, target, true);
	};

	// disables subscription checkbox (for protected folder)
	this.disable_subscription = function(folder)
	{
	var row = this.subscription_list.get_item(folder, true);
	if (row)
	- $('input[name="_subscribed[]"]:first', row).prop('disabled', true);
	+ $('input[name="_subscribed[]"]', row).first().prop('disabled', true);
	};

	// resets state of subscription checkbox (e.g. on error)
	this.reset_subscription = function(folder, state)
	{
	var row = this.subscription_list.get_item(folder, true);
	if (row)
	- $('input[name="_subscribed[]"]:first', row).prop('checked', state);
	+ $('input[name="_subscribed[]"]', row).first().prop('checked', state);
	};

	this.folder_size = function(folder)
	{
	var lock = this.set_busy(true, 'loading');
	this.http_post('folder-size', {_mbox: folder}, lock);
	};

	this.folder_size_update = function(size)
	{
	$('#folder-size').replaceWith(size);
	};

	// filter folders by namespace
	this.folder_filter = function(prefix)
	{
	this.subscription_list.reset_search();

	this.subscription_list.container.children('li').each(function() {
	var i, folder = ref.folder_id2name(this.id);
	// show all folders
	if (prefix == '---') {
	}
	// got namespace prefix
	else if (prefix) {
	if (folder !== prefix) {
	$(this).data('filtered', true).hide();
	return
	}
	}
	// no namespace prefix, filter out all other namespaces
	else {
	// first get all namespace roots
	for (i in ref.env.ns_roots) {
	if (folder === ref.env.ns_roots[i]) {
	$(this).data('filtered', true).hide();
	return;
	}
	}
	}

	$(this).removeData('filtered').show();
	});
	};

	/*********************************************************/
	/******* GUI functionality *******/
	/*********************************************************/

	this.init_button = function(cmd, prop)
	{
	var elm = document.getElementById(prop.id);
	if (!elm)
	return;

	var preload = false;
	if (prop.type == 'image') {
	elm = elm.parentNode;
	preload = true;
	}

	elm._command = cmd;
	elm._id = prop.id;
	if (prop.sel) {
	elm.onmousedown = function(e) { return ref.button_sel(this._command, this._id); };
	elm.onmouseup = function(e) { return ref.button_out(this._command, this._id); };
	if (preload)
	new Image().src = prop.sel;
	}
	if (prop.over) {
	elm.onmouseover = function(e) { return ref.button_over(this._command, this._id); };
	elm.onmouseout = function(e) { return ref.button_out(this._command, this._id); };
	if (preload)
	new Image().src = prop.over;
	}
	};

	// set event handlers on registered buttons
	this.init_buttons = function()
	{
	for (var cmd in this.buttons) {
	if (typeof cmd !== 'string')
	continue;

	for (var i=0; i<this.buttons[cmd].length; i++) {
	this.init_button(cmd, this.buttons[cmd][i]);
	}
	}
	};

	// set button to a specific state
	this.set_button = function(command, state)
	{
	var n, button, obj, $obj, a_buttons = this.buttons[command],
	len = a_buttons ? a_buttons.length : 0;

	for (n=0; n<len; n++) {
	button = a_buttons[n];
	obj = document.getElementById(button.id);

	if (!obj \|\| button.status === state)
	continue;

	// get default/passive setting of the button
	if (button.type == 'image' && !button.status) {
	button.pas = obj._original_src ? obj._original_src : obj.src;
	// respect PNG fix on IE browsers
	if (obj.runtimeStyle && obj.runtimeStyle.filter && obj.runtimeStyle.filter.match(/src=['"]([^'"]+)['"]/))
	button.pas = RegExp.$1;
	}
	else if (!button.status)
	button.pas = String(obj.className);

	button.status = state;

	// set image according to button state
	if (button.type == 'image' && button[state]) {
	obj.src = button[state];
	}
	// set class name according to button state
	else if (button[state] !== undefined) {
	obj.className = button[state];
	}

	// disable/enable input buttons
	if (button.type == 'input' \|\| button.type == 'button') {
	obj.disabled = state == 'pas';
	}
	else {
	$obj = $(obj);
	$obj
	.attr('tabindex', state == 'pas' \|\| state == 'sel' ? '-1' : ($obj.attr('data-tabindex') \|\| '0'))
	.attr('aria-disabled', state == 'pas' \|\| state == 'sel' ? 'true' : 'false');
	}
	}
	};

	// display a specific alttext
	this.set_alttext = function(command, label)
	{
	var n, button, obj, link, a_buttons = this.buttons[command],
	len = a_buttons ? a_buttons.length : 0;

	for (n=0; n<len; n++) {
	button = a_buttons[n];
	obj = document.getElementById(button.id);

	if (button.type == 'image' && obj) {
	obj.setAttribute('alt', this.get_label(label));
	if ((link = obj.parentNode) && link.tagName.toLowerCase() == 'a')
	link.setAttribute('title', this.get_label(label));
	}
	else if (obj)
	obj.setAttribute('title', this.get_label(label));
	}
	};

	// mouse over button
	this.button_over = function(command, id)
	{
	this.button_event(command, id, 'over');
	};

	// mouse down on button
	this.button_sel = function(command, id)
	{
	this.button_event(command, id, 'sel');
	};

	// mouse out of button
	this.button_out = function(command, id)
	{
	this.button_event(command, id, 'act');
	};

	// event of button
	this.button_event = function(command, id, event)
	{
	var n, button, obj, a_buttons = this.buttons[command],
	len = a_buttons ? a_buttons.length : 0;

	for (n=0; n<len; n++) {
	button = a_buttons[n];
	if (button.id == id && button.status == 'act') {
	if (button[event] && (obj = document.getElementById(button.id))) {
	obj[button.type == 'image' ? 'src' : 'className'] = button[event];
	}

	if (event == 'sel') {
	this.buttons_sel[id] = command;
	}
	}
	}
	};

	// write to the document/window title
	this.set_pagetitle = function(title)
	{
	if (title && document.title)
	document.title = title;
	};

	// display a system message, list of types in common.css (below #message definition)
	this.display_message = function(msg, type, timeout, key)
	{
	if (msg && msg.length && /^[a-z._]+$/.test(msg))
	msg = this.get_label(msg);

	// pass command to parent window
	if (this.is_framed())
	return parent.rcmail.display_message(msg, type, timeout);

	if (!this.gui_objects.message) {
	// save message in order to display after page loaded
	if (type != 'loading')
	this.pending_message = [msg, type, timeout, key];
	return 1;
	}

	if (!type)
	type = 'notice';
	else if (type == 'loading') {
	if (!key)
	key = 'loading';
	if (!timeout)
	timeout = this.env.request_timeout * 1000;
	if (!msg)
	msg = this.get_label('loading');
	}

	if (!key)
	key = this.html_identifier(msg);

	var date = new Date(),
	id = type + date.getTime();

	if (!timeout) {
	switch (type) {
	case 'error':
	case 'warning':
	timeout = this.message_time * 2;
	break;

	case 'uploading':
	timeout = 0;
	break;

	default:
	timeout = this.message_time;
	}
	}

	// The same message is already displayed
	if (this.messages[key]) {
	// replace label
	if (this.messages[key].obj)
	$('div.content', this.messages[key].obj).html(msg);
	// store label in stack
	if (type == 'loading') {
	this.messages[key].labels.push({'id': id, 'msg': msg});
	}
	// add element and set timeout
	this.messages[key].elements.push(id);
	setTimeout(function() { ref.hide_message(id, type == 'loading'); }, timeout);
	return id;
	}

	// create DOM object and display it
	var obj = $('<div>').addClass(type + ' content').html(msg).data('key', key),
	cont = $(this.gui_objects.message).append(obj).show();

	this.messages[key] = {'obj': obj, 'elements': [id]};

	if (type == 'loading') {
	this.messages[key].labels = [{'id': id, 'msg': msg}];
	}
	else if (type != 'uploading') {
	obj.click(function() { return ref.hide_message(obj); })
	.attr('role', 'alert');
	}

	this.triggerEvent('message', { message:msg, type:type, timeout:timeout, object:obj });

	if (timeout > 0)
	setTimeout(function() { ref.hide_message(id, type != 'loading'); }, timeout);

	return id;
	};

	// make a message to disapear
	this.hide_message = function(obj, fade)
	{
	// pass command to parent window
	if (this.is_framed())
	return parent.rcmail.hide_message(obj, fade);

	if (!this.gui_objects.message)
	return;

	var k, n, i, o, m = this.messages;

	// Hide message by object, don't use for 'loading'!
	if (typeof obj === 'object') {
	o = $(obj);
	k = o.data('key');
	this.hide_message_object(o, fade);
	if (m[k])
	delete m[k];
	}
	// Hide message by id
	else {
	for (k in m) {
	for (n in m[k].elements) {
	if (m[k] && m[k].elements[n] == obj) {
	m[k].elements.splice(n, 1);
	// hide DOM element if last instance is removed
	if (!m[k].elements.length) {
	this.hide_message_object(m[k].obj, fade);
	delete m[k];
	}
	// set pending action label for 'loading' message
	else if (k == 'loading') {
	for (i in m[k].labels) {
	if (m[k].labels[i].id == obj) {
	delete m[k].labels[i];
	}
	else {
	o = m[k].labels[i].msg;
	$('div.content', m[k].obj).html(o);
	}
	}
	}
	}
	}
	}
	}
	};

	// hide message object and remove from the DOM
	this.hide_message_object = function(o, fade)
	{
	if (fade)
	o.fadeOut(600, function() { $(this).remove(); });
	else
	o.hide().remove();
	};

	// remove all messages immediately
	this.clear_messages = function()
	{
	// pass command to parent window
	if (this.is_framed())
	return parent.rcmail.clear_messages();

	var k, n, m = this.messages;

	for (k in m)
	for (n in m[k].elements)
	if (m[k].obj)
	this.hide_message_object(m[k].obj);

	this.messages = {};
	};

	// display uploading message with progress indicator
	// data should contain: name, total, current, percent, text
	this.display_progress = function(data)
	{
	if (!data \|\| !data.name)
	return;

	var msg = this.messages['progress' + data.name];

	if (!data.label)
	data.label = this.get_label('uploadingmany');

	if (!msg) {
	if (!data.percent \|\| data.percent < 100)
	this.display_message(data.label, 'uploading', 0, 'progress' + data.name);
	return;
	}

	if (!data.total \|\| data.percent >= 100) {
	this.hide_message(msg.obj);
	return;
	}

	if (data.text)
	data.label += ' ' + data.text;

	msg.obj.text(data.label);
	};

	// open a jquery UI dialog with the given content
	this.show_popup_dialog = function(content, title, buttons, options)
	{
	// forward call to parent window
	if (this.is_framed()) {
	return parent.rcmail.show_popup_dialog(content, title, buttons, options);
	}

	var popup = $('<div class="popup">');

	if (typeof content == 'object') {
	popup.append(content);
	if ($(content).is('iframe'))
	popup.addClass('iframe');
	}
	else
	popup.html(content);

	// assign special classes to dialog buttons
	var i = 0, fn = function(button, classes, idx) {
	if (typeof button == 'function') {
	button = {
	click: button,
	text: idx,
	'class': classes
	};
	}
	else {
	buttons['class'] = classes;
	}

	return button;
	};

	if (options && options.button_classes)
	$.each(buttons, function(idx, button) {
	var cl = options.button_classes[i];
	if (cl)
	buttons[idx] = fn(button, cl, idx);
	i++;
	});

	options = $.extend({
	title: title,
	buttons: buttons,
	modal: true,
	resizable: true,
	width: 500,
	close: function(event, ui) { $(this).remove(); }
	}, options \|\| {});

	popup.dialog(options);

	if (options.width)
	popup.width(options.width);
	if (options.height)
	popup.height(options.height);

	// resize and center popup
	var win = $(window), w = win.width(), h = win.height(),
	width = popup.width(),
	height = options.height \|\| (popup[0].scrollHeight + 20),
	dialog = popup.parent(),
	titlebar_height = $('.ui-dialog-titlebar', dialog).outerHeight() \|\| 0,
	buttonpane_height = $('.ui-dialog-buttonpane', dialog).outerHeight() \|\| 0,
	padding = (parseInt(dialog.css('padding-top')) + parseInt(popup.css('padding-top'))) * 2;

	popup.dialog('option', {
	height: Math.min(h - 40, height + titlebar_height + buttonpane_height + padding + 2),
	width: Math.min(w - 20, width + 24)
	});

	// Don't propagate keyboard events to the UI below the dialog (#6055)
	popup.parent().on('keydown keyup', function(e) { e.stopPropagation(); });

	return popup;
	};

	// show_popup_dialog() wrapper for simple dialogs with action and Cancel buttons
	this.simple_dialog = function(content, title, action_func, options)
	{
	if (!options)
	options = {};

	var title = this.get_label(title),
	save_label = options.button \|\| 'save',
	save_class = options.button_class \|\| save_label.replace(/^[^\.]+\./i, ''),
	cancel_label = options.cancel_button \|\| 'cancel',
	cancel_class = options.cancel_class \|\| cancel_label.replace(/^[^\.]+\./i, ''),
	close_func = function(e, ui, dialog) {
	(ref.is_framed() ? parent.$ : $)(dialog \|\| this).dialog('close');
	if (options.cancel_func) options.cancel_func(e, ref);
	},
	buttons = [{
	text: this.get_label(cancel_label),
	'class': cancel_class.replace(/close/i, 'cancel'),
	click: close_func
	}];

	if (!action_func)
	buttons[0]['class'] += ' mainaction';
	else
	buttons.unshift({
	text: this.get_label(save_label),
	'class': 'mainaction ' + save_class,
	click: function(e, ui) { if (action_func(e, ref)) close_func(e, ui, this); }
	});

	return this.show_popup_dialog(content, title, buttons, options);
	};

	// show_popup_dialog() wrapper for alert() type dialogs
	this.alert_dialog = function(content, action, options)
	{
	options = $.extend(options \|\| {}, {
	cancel_button: 'ok',
	cancel_class: 'save',
	cancel_func: action
	});

	return this.simple_dialog(content, options.title \|\| 'alerttitle', null, options);
	};

	// simple_dialog() wrapper for confirm() type dialogs
	this.confirm_dialog = function(content, button_label, action, options)
	{
	var action_func = function(e, ref) { action(e, ref); return true; };

	options = $.extend(options \|\| {}, {
	button: button_label \|\| 'continue'
	});

	return this.simple_dialog(content, options.title \|\| 'confirmationtitle', action_func, options);
	};

	// enable/disable buttons for page shifting
	this.set_page_buttons = function()
	{
	this.enable_command('nextpage', 'lastpage', this.env.pagecount > this.env.current_page);
	this.enable_command('previouspage', 'firstpage', this.env.current_page > 1);

	this.update_pagejumper();
	};

	// mark a mailbox as selected and set environment variable
	this.select_folder = function(name, prefix, encode)
	{
	if (this.savedsearchlist) {
	this.savedsearchlist.select('');
	}

	if (this.treelist) {
	this.treelist.select(name);
	}
	else if (this.gui_objects.folderlist) {
	$('li.selected', this.gui_objects.folderlist).removeClass('selected');
	$(this.get_folder_li(name, prefix, encode)).addClass('selected');

	// trigger event hook
	this.triggerEvent('selectfolder', { folder:name, prefix:prefix });
	}
	};

	// adds a class to selected folder
	this.mark_folder = function(name, class_name, prefix, encode)
	{
	$(this.get_folder_li(name, prefix, encode)).addClass(class_name);
	this.triggerEvent('markfolder', {folder: name, mark: class_name, status: true});
	};

	// adds a class to selected folder
	this.unmark_folder = function(name, class_name, prefix, encode)
	{
	$(this.get_folder_li(name, prefix, encode)).removeClass(class_name);
	this.triggerEvent('markfolder', {folder: name, mark: class_name, status: false});
	};

	// helper method to find a folder list item
	this.get_folder_li = function(name, prefix, encode)
	{
	if (!prefix)
	prefix = 'rcmli';

	if (this.gui_objects.folderlist) {
	name = this.html_identifier(name, encode);
	return document.getElementById(prefix+name);
	}
	};

	// for reordering column array (Konqueror workaround)
	// and for setting some message list global variables
	this.set_message_coltypes = function(listcols, repl, smart_col)
	{
	var list = this.message_list,
	thead = list ? list.thead : null,
	repl, cell, col, n, len, tr;

	this.env.listcols = listcols;

	if (!this.env.coltypes)
	this.env.coltypes = {};

	// replace old column headers
	if (thead) {
	if (repl) {
	thead.innerHTML = '';
	tr = document.createElement('tr');

	for (c=0, len=repl.length; c < len; c++) {
	cell = document.createElement('th');
	cell.innerHTML = repl[c].html \|\| '';
	if (repl[c].id) cell.id = repl[c].id;
	if (repl[c].className) cell.className = repl[c].className;
	tr.appendChild(cell);
	}
	thead.appendChild(tr);
	}

	for (n=0, len=this.env.listcols.length; n<len; n++) {
	col = this.env.listcols[n];
	if ((cell = thead.rows[0].cells[n]) && (col == 'from' \|\| col == 'to' \|\| col == 'fromto')) {
	$(cell).attr('rel', col).find('span,a').text(this.get_label(col == 'fromto' ? smart_col : col));
	}
	}
	}

	this.env.subject_col = null;
	this.env.flagged_col = null;
	this.env.status_col = null;

	if (this.env.coltypes.folder)
	this.env.coltypes.folder.hidden = !(this.env.search_request \|\| this.env.search_id) \|\| this.env.search_scope == 'base';

	if ((n = $.inArray('subject', this.env.listcols)) >= 0) {
	this.env.subject_col = n;
	if (list)
	list.subject_col = n;
	}
	if ((n = $.inArray('flag', this.env.listcols)) >= 0)
	this.env.flagged_col = n;
	if ((n = $.inArray('status', this.env.listcols)) >= 0)
	this.env.status_col = n;

	if (list) {
	list.hide_column('folder', (this.env.coltypes.folder && this.env.coltypes.folder.hidden) \|\| $.inArray('folder', this.env.listcols) < 0);
	list.init_header();
	}
	};

	// replace content of row count display
	this.set_rowcount = function(text, mbox)
	{
	// #1487752
	if (mbox && mbox != this.env.mailbox)
	return false;

	$(this.gui_objects.countdisplay).html(text);

	// update page navigation buttons
	this.set_page_buttons();
	};

	// replace content of mailboxname display
	this.set_mailboxname = function(content)
	{
	if (this.gui_objects.mailboxname && content)
	this.gui_objects.mailboxname.innerHTML = content;
	};

	// replace content of quota display
	this.set_quota = function(content)
	{
	if (this.gui_objects.quotadisplay && content && content.type == 'text')
	$(this.gui_objects.quotadisplay).text((content.percent\|\|0) + '%').attr('title', content.title \|\| '');

	this.triggerEvent('setquota', content);
	this.env.quota_content = content;
	};

	// update trash folder state
	this.set_trash_count = function(count)
	{
	this[(count ? 'un' : '') + 'mark_folder'](this.env.trash_mailbox, 'empty', '', true);
	};

	// update the mailboxlist
	this.set_unread_count = function(mbox, count, set_title, mark)
	{
	if (!this.gui_objects.mailboxlist)
	return false;

	this.env.unread_counts[mbox] = count;
	this.set_unread_count_display(mbox, set_title);

	if (mark)
	this.mark_folder(mbox, mark, '', true);
	else if (!count)
	this.unmark_folder(mbox, 'recent', '', true);

	this.mark_all_read_state();
	};

	// update the mailbox count display
	this.set_unread_count_display = function(mbox, set_title)
	{
	var reg, link, text_obj, item, mycount, childcount, div;

	if (item = this.get_folder_li(mbox, '', true)) {
	mycount = this.env.unread_counts[mbox] ? this.env.unread_counts[mbox] : 0;
	link = $(item).children('a').eq(0);
	text_obj = link.children('span.unreadcount');
	if (!text_obj.length && mycount)
	text_obj = $('<span>').addClass('unreadcount').appendTo(link);
	reg = /\s+$[0-9]+$$/i;

	childcount = 0;
	if ((div = item.getElementsByTagName('div')[0]) &&
	div.className.match(/collapsed/)) {
	// add children's counters
	for (var k in this.env.unread_counts)
	if (k.startsWith(mbox + this.env.delimiter))
	childcount += this.env.unread_counts[k];
	}

	if (mycount && text_obj.length)
	text_obj.html(this.env.unreadwrap.replace(/%[sd]/, mycount));
	else if (text_obj.length)
	text_obj.remove();

	// set parent's display
	reg = new RegExp(RegExp.escape(this.env.delimiter) + '[^' + RegExp.escape(this.env.delimiter) + ']+$');
	if (mbox.match(reg))
	this.set_unread_count_display(mbox.replace(reg, ''), false);

	// set the right classes
	if ((mycount+childcount)>0)
	$(item).addClass('unread');
	else
	$(item).removeClass('unread');
	}

	// set unread count to window title
	reg = /^$[0-9]+$\s+/i;
	if (set_title && document.title) {
	var new_title = '',
	doc_title = String(document.title);

	if (mycount && doc_title.match(reg))
	new_title = doc_title.replace(reg, '('+mycount+') ');
	else if (mycount)
	new_title = '('+mycount+') '+doc_title;
	else
	new_title = doc_title.replace(reg, '');

	this.set_pagetitle(new_title);
	}
	};

	// display fetched raw headers
	this.set_headers = function(content)
	{
	if (this.gui_objects.all_headers_box && content)
	$(this.gui_objects.all_headers_box).html(content).show();
	};

	// display all-headers row and fetch raw message headers
	this.show_headers = function(props, elem)
	{
	if (!this.gui_objects.all_headers_row \|\| !this.gui_objects.all_headers_box \|\| !this.env.uid)
	return;

	$(elem).removeClass('show-headers').addClass('hide-headers');
	$(this.gui_objects.all_headers_row).show();
	elem.onclick = function() { ref.command('hide-headers', '', elem); };

	// fetch headers only once
	if (!this.gui_objects.all_headers_box.innerHTML) {
	this.http_request('headers', {_uid: this.env.uid, _mbox: this.env.mailbox},
	this.display_message('', 'loading')
	);
	}
	};

	// hide all-headers row
	this.hide_headers = function(props, elem)
	{
	if (!this.gui_objects.all_headers_row \|\| !this.gui_objects.all_headers_box)
	return;

	$(elem).removeClass('hide-headers').addClass('show-headers');
	$(this.gui_objects.all_headers_row).hide();
	elem.onclick = function() { ref.command('show-headers', '', elem); };
	};

	// create folder selector popup
	this.folder_selector = function(event, callback)
	{
	this.entity_selector('folder-selector', callback, this.env.mailboxes_list, function(obj, a) {
	var n = 0, s = 0,
	delim = ref.env.delimiter,
	folder = ref.env.mailboxes[obj],
	id = folder.id,
	row = $('<li>');

	if (folder.virtual)
	a.addClass('virtual').attr({'aria-disabled': 'true', tabindex: '-1'});
	else
	a.addClass('active').data('id', folder.id);

	if (folder['class'])
	row.addClass(folder['class']);

	// calculate/set indentation level
	while ((s = id.indexOf(delim, s)) >= 0) {
	n++; s++;
	}
	a.css('padding-left', n ? (n * 16) + 'px' : 0);

	// add folder name element
	a.append($('<span>').text(folder.name));

	return row.append(a);
	}, event);
	};

	// create addressbook selector popup
	this.addressbook_selector = function(event, callback)
	{
	// build addressbook + groups list
	var combined_sources = [];

	// check we really need it before processing
	if (!this.entity_selectors['addressbook-selector']) {
	$.each(this.env.address_sources, function() {
	if (!this.readonly) {
	var source = this;
	combined_sources.push(source);

	$.each(ref.env.contactgroups, function() {
	if (source.id === this.source) {
	combined_sources.push(this);
	}
	});
	}
	});
	}

	this.entity_selector('addressbook-selector', callback, combined_sources, function(obj, a) {
	if (obj.type == 'group') {
	a.attr('rel', obj.source + ':' + obj.id)
	.addClass('contactgroup active')
	.data({source: obj.source, gid: obj.id, id: obj.source + ':' + obj.id})
	.css('padding-left', '16px');
	}
	else {
	a.addClass('addressbook active').data('id', obj.id);
	}
	a.append($('<span>').text(obj.name));

	return $('<li>').append(a);
	}, event);
	};

	// create contactgroup selector popup
	this.contactgroup_selector = function(event, callback)
	{
	this.entity_selector('contactgroup-selector', callback, this.env.contactgroups, function(obj, a) {
	if (ref.env.source === obj.source) {
	a.addClass('contactgroup active')
	.data({id: obj.id})
	.append($('<span>').text(obj.name));

	return $('<li>').append(a);
	}
	}, event);
	};

	// create selector popup (eg for folders or address books), position and display it
	this.entity_selector = function(name, click_callback, entity_list, list_callback, event)
	{
	var container = this.entity_selectors[name];

	if (!container) {
	var rows = [],
	container = $('<div>').attr('id', name).addClass('popupmenu'),
	ul = $('<ul>').addClass('toolbarmenu'),
	link = document.createElement('a');

	link.href = '#';
	link.className = 'icon';

	// loop over entity list
	$.each(entity_list, function(i) {
	var a = $(link.cloneNode(false)).attr('rel', this.id);
	rows.push(list_callback(this, a, i));
	});

	ul.append(rows).appendTo(container);

	// temporarily show element to calculate its size
	container.css({left: '-1000px', top: '-1000px'})
	.appendTo(document.body).show();

	// set max-height if the list is long
	if (rows.length > 10)
	container.css('max-height', $('li', container)[0].offsetHeight * 10 + 9);

	// register delegate event handler for folder item clicks
	container.on('click', 'a.active', function(e) {
	container.data('callback')($(this).data('id'), this);
	});

	this.entity_selectors[name] = container;
	}

	container.data('callback', click_callback);

	// position menu on the screen
	this.show_menu(name, true, event);
	};

	this.destroy_entity_selector = function(name)
	{
	$("#" + name).remove();
	delete this.entity_selectors[name];
	};

	/***********************************************/
	/******* popup menu functions *******/
	/***********************************************/

	// Show/hide a specific popup menu
	this.show_menu = function(prop, show, event)
	{
	var name = typeof prop == 'object' ? prop.menu : prop,
	obj = $('#'+name),
	ref = event && event.target ? $(event.target) : $(obj.attr('rel') \|\| '#'+name+'link'),
	keyboard = rcube_event.is_keyboard(event),
	align = obj.attr('data-align') \|\| '',
	stack = false;

	// find "real" button element
	if (ref.get(0).tagName != 'A' && ref.closest('a').length)
	ref = ref.closest('a');

	if (typeof prop == 'string')
	prop = { menu:name };

	// let plugins or skins provide the menu element
	if (!obj.length) {
	obj = this.triggerEvent('menu-get', { name:name, props:prop, originalEvent:event });
	}

	if (!obj \|\| !obj.length) {
	// just delegate the action to subscribers
	return this.triggerEvent(show === false ? 'menu-close' : 'menu-open', { name:name, props:prop, originalEvent:event });
	}

	// move element to top for proper absolute positioning
	obj.appendTo(document.body);

	if (typeof show == 'undefined')
	show = obj.is(':visible') ? false : true;

	if (show && ref.length) {
	var win = $(window),
	pos = ref.offset(),
	above = align.indexOf('bottom') >= 0;

	stack = ref.attr('role') == 'menuitem' \|\| ref.closest('[role=menuitem]').length > 0;

	ref.offsetWidth = ref.outerWidth();
	ref.offsetHeight = ref.outerHeight();
	if (!above && pos.top + ref.offsetHeight + obj.height() > win.height()) {
	above = true;
	}
	if (align.indexOf('right') >= 0) {
	pos.left = pos.left + ref.outerWidth() - obj.width();
	}
	else if (stack) {
	pos.left = pos.left + ref.offsetWidth - 5;
	pos.top -= ref.offsetHeight;
	}
	if (pos.left + obj.width() > win.width()) {
	pos.left = win.width() - obj.width() - 12;
	}
	pos.top = Math.max(0, pos.top + (above ? -obj.height() : ref.offsetHeight));
	obj.css({ left:pos.left+'px', top:pos.top+'px' });
	}

	// add menu to stack
	if (show) {
	// truncate stack down to the one containing the ref link
	for (var i = this.menu_stack.length - 1; stack && i >= 0; i--) {
	if (!$(ref).parents('#'+this.menu_stack[i]).length && $(event.target).parent().attr('role') != 'menuitem')
	this.hide_menu(this.menu_stack[i], event);
	}
	if (stack && this.menu_stack.length) {
	obj.data('parent', $.last(this.menu_stack));
	obj.css('z-index', ($('#'+$.last(this.menu_stack)).css('z-index') \|\| 0) + 1);
	}
	else if (!stack && this.menu_stack.length) {
	this.hide_menu(this.menu_stack[0], event);
	}

	obj.show().attr('aria-hidden', 'false').data('opener', ref.attr('aria-expanded', 'true').get(0));
	this.triggerEvent('menu-open', { name:name, obj:obj, props:prop, originalEvent:event });
	this.menu_stack.push(name);

	this.menu_keyboard_active = show && keyboard;
	if (this.menu_keyboard_active) {
	this.focused_menu = name;
	obj.find('a,input:not(:disabled)').not('[aria-disabled=true]').first().focus();
	}
	}
	else { // close menu
	this.hide_menu(name, event);
	}

	return show;
	};

	// hide the given popup menu (and it's childs)
	this.hide_menu = function(name, event)
	{
	if (!this.menu_stack.length) {
	// delegate to subscribers
	this.triggerEvent('menu-close', { name:name, props:{ menu:name }, originalEvent:event });
	return;
	}

	var obj, keyboard = rcube_event.is_keyboard(event);
	for (var j=this.menu_stack.length-1; j >= 0; j--) {
	obj = $('#' + this.menu_stack[j]).hide().attr('aria-hidden', 'true').data('parent', false);
	this.triggerEvent('menu-close', { name:this.menu_stack[j], obj:obj, props:{ menu:this.menu_stack[j] }, originalEvent:event });
	if (this.menu_stack[j] == name) {
	j = -1; // stop loop
	if (obj.data('opener')) {
	$(obj.data('opener')).attr('aria-expanded', 'false');
	if (keyboard)
	obj.data('opener').focus();
	}
	}
	this.menu_stack.pop();
	}

	// focus previous menu in stack
	if (this.menu_stack.length && keyboard) {
	this.menu_keyboard_active = true;
	this.focused_menu = $.last(this.menu_stack);
	if (!obj \|\| !obj.data('opener'))
	$('#'+this.focused_menu).find('a,input:not(:disabled)').not('[aria-disabled=true]').first().focus();
	}
	else {
	this.focused_menu = null;
	this.menu_keyboard_active = false;
	}
	};

	// position a menu element on the screen in relation to other object
	this.element_position = function(element, obj)
	{
	var obj = $(obj), win = $(window),
	width = obj.outerWidth(),
	height = obj.outerHeight(),
	menu_pos = obj.data('menu-pos'),
	win_height = win.height(),
	elem_height = $(element).height(),
	elem_width = $(element).width(),
	pos = obj.offset(),
	top = pos.top,
	left = pos.left + width;

	if (menu_pos == 'bottom') {
	top += height;
	left -= width;
	}
	else
	left -= 5;

	if (top + elem_height > win_height) {
	top -= elem_height - height;
	if (top < 0)
	top = Math.max(0, (win_height - elem_height) / 2);
	}

	if (left + elem_width > win.width())
	left -= elem_width + width;

	element.css({left: left + 'px', top: top + 'px'});
	};

	// initialize HTML editor
	this.editor_init = function(config, id)
	{
	this.editor = new rcube_text_editor(config, id);
	};


	/********************************************************/
	/******* html to text conversion functions *******/
	/********************************************************/

	this.html2plain = function(html, func)
	{
	return this.format_converter(html, 'html', func);
	};

	this.plain2html = function(plain, func)
	{
	return this.format_converter(plain, 'plain', func);
	};

	this.format_converter = function(text, format, func)
	{
	// warn the user (if converted content is not empty)
	if (!text
	\|\| (format == 'html' && !(text.replace(/<[^>]+>\| \|\xC2\xA0\|\s/g, '')).length)
	\|\| (format != 'html' && !(text.replace(/\xC2\xA0\|\s/g, '')).length)
	) {
	// without setTimeout() here, textarea is filled with initial (onload) content
	if (func)
	setTimeout(function() { func(''); }, 50);
	return true;
	}

	var confirmed = this.env.editor_warned \|\| confirm(this.get_label('editorwarning'));

	this.env.editor_warned = true;

	if (!confirmed)
	return false;

	var url = '?_task=utils&_action=' + (format == 'html' ? 'html2text' : 'text2html'),
	lock = this.set_busy(true, 'converting');

	$.ajax({ type: 'POST', url: url, data: text, contentType: 'application/octet-stream',
	error: function(o, status, err) { ref.http_error(o, status, err, lock); },
	success: function(data) {
	ref.set_busy(false, null, lock);
	if (func) func(data);
	}
	});

	return true;
	};


	/********************************************************/
	/******* remote request methods *******/
	/********************************************************/

	// compose a valid url with the given parameters
	this.url = function(action, query)
	{
	var querystring = typeof query === 'string' ? query : '';

	if (typeof action !== 'string')
	query = action;
	else if (!query \|\| typeof query !== 'object')
	query = {};

	if (action)
	query._action = action;
	else if (this.env.action)
	query._action = this.env.action;

	var url = this.env.comm_path, k, param = {};

	// overwrite task name
	if (action && action.match(/([a-z0-9_-]+)\/([a-z0-9-_.]+)/)) {
	query._action = RegExp.$2;
	url = url.replace(/\_task=[a-z0-9_-]+/, '_task=' + RegExp.$1);
	}

	// force _framed=0
	if (query._framed === 0) {
	url = url.replace('&_framed=1', '');
	query._framed = null;
	}

	// remove undefined values
	for (k in query) {
	if (query[k] !== undefined && query[k] !== null)
	param[k] = query[k];
	}

	if (param = $.param(param))
	url += (url.indexOf('?') > -1 ? '&' : '?') + param;

	if (querystring)
	url += (url.indexOf('?') > -1 ? '&' : '?') + querystring;

	return url;
	};

	this.redirect = function(url, lock)
	{
	if (lock !== false)
	this.set_busy(true, 'loading');

	if (this.is_framed()) {
	url = url.replace(/&_framed=1/, '');
	parent.rcmail.redirect(url, lock);
	}
	else {
	if (this.env.extwin) {
	if (typeof url == 'string')
	url += (url.indexOf('?') < 0 ? '?' : '&') + '_extwin=1';
	else
	url._extwin = 1;
	}
	this.location_href(url, window);
	}
	};

	this.goto_url = function(action, query, lock, secure)
	{
	var url = this.url(action, query)
	if (secure) url = this.secure_url(url);
	this.redirect(url, lock);
	};

	this.location_href = function(url, target, frame)
	{
	if (frame)
	this.lock_frame();

	if (typeof url == 'object')
	url = this.env.comm_path + '&' + $.param(url);

	// simulate real link click to force IE to send referer header
	if (bw.ie && target == window)
	$('<a>').attr('href', url).appendTo(document.body).get(0).click();
	else
	target.location.href = url;

	// reset keep-alive interval
	this.start_keepalive();
	};

	// update browser location to remember current view
	this.update_state = function(query)
	{
	if (window.history.replaceState)
	try {
	// This may throw security exception in Firefox (#5400)
	window.history.replaceState({}, document.title, rcmail.url('', query));
	}
	catch(e) { /* ignore */ };
	};

	// send a http request to the server
	this.http_request = function(action, data, lock, type)
	{
	if (type != 'POST')
	type = 'GET';

	if (typeof data !== 'object')
	data = rcube_parse_query(data);

	data._remote = 1;
	data._unlock = lock ? lock : 0;

	// trigger plugin hook
	var result = this.triggerEvent('request' + action, data);

	// abort if one of the handlers returned false
	if (result === false) {
	if (data._unlock)
	this.set_busy(false, null, data._unlock);
	return false;
	}
	else if (result && result.getResponseHeader) {
	return result;
	}
	else if (result !== undefined) {
	data = result;
	if (data._action) {
	action = data._action;
	delete data._action;
	}
	}

	var url = this.url(action);

	// reset keep-alive interval
	this.start_keepalive();

	// send request
	return $.ajax({
	type: type, url: url, data: data, dataType: 'json',
	success: function(data) { ref.http_response(data); },
	error: function(o, status, err) { ref.http_error(o, status, err, lock, action); }
	});
	};

	// send a http GET request to the server
	this.http_get = this.http_request;

	// send a http POST request to the server
	this.http_post = function(action, data, lock)
	{
	return this.http_request(action, data, lock, 'POST');
	};

	// aborts ajax request
	this.abort_request = function(r)
	{
	if (r.request)
	r.request.abort();
	if (r.lock)
	this.set_busy(false, null, r.lock);
	};

	// handle HTTP response
	this.http_response = function(response)
	{
	if (!response)
	return;

	if (response.unlock)
	this.set_busy(false, null, response.unlock);

	this.triggerEvent('responsebefore', {response: response});
	this.triggerEvent('responsebefore'+response.action, {response: response});

	// set env vars
	if (response.env)
	this.set_env(response.env);

	var i;

	// we have labels to add
	if (typeof response.texts === 'object') {
	for (i in response.texts)
	if (typeof response.texts[i] === 'string')
	this.add_label(i, response.texts[i]);
	}

	// if we get javascript code from server -> execute it
	if (response.exec) {
	eval(response.exec);
	}

	// execute callback functions of plugins
	if (response.callbacks && response.callbacks.length) {
	for (i=0; i < response.callbacks.length; i++)
	this.triggerEvent(response.callbacks[i][0], response.callbacks[i][1]);
	}

	// process the response data according to the sent action
	switch (response.action) {
	case 'mark':
	// Mark the message as Seen also in the opener/parent
	if ((this.env.action == 'show' \|\| this.env.action == 'preview') && this.env.last_flag == 'SEEN')
	this.set_unread_message(this.env.uid, this.env.mailbox);
	break;

	case 'delete':
	if (this.task == 'addressbook') {
	var sid, uid = this.contact_list.get_selection(), writable = false;

	if (uid && this.contact_list.rows[uid]) {
	// search results, get source ID from record ID
	if (this.env.source == '') {
	sid = String(uid).replace(/^[^-]+-/, '');
	writable = sid && this.env.address_sources[sid] && !this.env.address_sources[sid].readonly;
	}
	else {
	writable = !this.env.address_sources[this.env.source].readonly;
	}
	}
	this.enable_command('delete', 'edit', writable);
	this.enable_command('export', (this.contact_list && this.contact_list.rowcount > 0));
	this.enable_command('export-selected', 'print', false);
	}

	case 'move':
	if (this.env.action == 'show') {
	// re-enable commands on move/delete error
	this.enable_command(this.env.message_commands, true);
	if (!this.env.list_post)
	this.enable_command('reply-list', false);
	}
	else if (this.task == 'addressbook') {
	this.triggerEvent('listupdate', { list:this.contact_list, folder:this.env.source, rowcount:this.contact_list.rowcount });
	}

	case 'purge':
	case 'expunge':
	if (this.task == 'mail') {
	if (!this.env.exists) {
	// clear preview pane content
	if (this.env.contentframe)
	this.show_contentframe(false);
	// disable commands useless when mailbox is empty
	this.enable_command(this.env.message_commands, 'purge', 'expunge',
	'select-all', 'select-none', 'expand-all', 'expand-unread', 'collapse-all', false);
	}
	if (this.message_list)
	this.triggerEvent('listupdate', { list:this.message_list, folder:this.env.mailbox, rowcount:this.message_list.rowcount });
	}
	break;

	case 'refresh':
	case 'check-recent':
	// update message flags
	$.each(this.env.recent_flags \|\| {}, function(uid, flags) {
	ref.set_message(uid, 'deleted', flags.deleted);
	ref.set_message(uid, 'replied', flags.answered);
	ref.set_message(uid, 'unread', !flags.seen);
	ref.set_message(uid, 'forwarded', flags.forwarded);
	ref.set_message(uid, 'flagged', flags.flagged);
	});
	delete this.env.recent_flags;

	case 'getunread':
	case 'search':
	this.env.qsearch = null;
	case 'list':
	if (this.task == 'mail') {
	var is_multifolder = this.is_multifolder_listing(),
	list = this.message_list,
	uid = this.env.list_uid;

	this.enable_command('show', 'select-all', 'select-none', this.env.messagecount > 0);
	this.enable_command('expunge', this.env.exists && !is_multifolder);
	this.enable_command('purge', this.purge_mailbox_test() && !is_multifolder);
	this.enable_command('import-messages', !is_multifolder);
	this.enable_command('expand-all', 'expand-unread', 'collapse-all', this.env.threading && this.env.messagecount && !is_multifolder);

	if (list) {
	if (response.action == 'list' \|\| response.action == 'search') {
	// highlight message row when we're back from message page
	if (uid) {
	if (uid === 'FIRST') {
	uid = list.get_first_row();
	}
	else if (uid === 'LAST') {
	uid = list.get_last_row();
	}
	else if (!list.rows[uid]) {
	uid += '-' + this.env.mailbox;
	}

	if (uid && list.rows[uid]) {
	list.select(uid);
	}

	delete this.env.list_uid;
	}

	this.enable_command('set-listmode', this.env.threads && !is_multifolder);
	if (list.rowcount > 0 && !$(document.activeElement).is('input,textarea'))
	list.focus();

	// trigger 'select' so all dependent actions update its state
	// e.g. plugins use this event to activate buttons (#1490647)
	list.triggerEvent('select');
	}

	if (response.action != 'getunread')
	this.triggerEvent('listupdate', { list:list, folder:this.env.mailbox, rowcount:list.rowcount });
	}
	}
	else if (this.task == 'addressbook') {
	var list = this.contact_list,
	uid = this.env.list_uid;

	this.enable_command('export', 'select-all', 'select-none', (list && list.rowcount > 0));

	if (response.action == 'list' \|\| response.action == 'search') {
	this.enable_command('search-create', this.env.source == '');
	this.enable_command('search-delete', this.env.search_id);
	this.update_group_commands();

	if (list && uid) {
	if (uid === 'FIRST') {
	uid = list.get_first_row();
	}
	else if (uid === 'LAST') {
	uid = list.get_last_row();
	}

	if (uid && list.rows[uid]) {
	list.select(uid);
	}

	delete this.env.list_uid;

	// trigger 'select' so all dependent actions update its state
	list.triggerEvent('select');
	}

	if (list.rowcount > 0 && !$(document.activeElement).is('input,textarea'))
	list.focus();

	this.triggerEvent('listupdate', { list:list, folder:this.env.source, rowcount:list.rowcount });
	}
	}
	break;

	case 'list-contacts':
	case 'search-contacts':
	if (this.contact_list) {
	if (this.contact_list.rowcount > 0)
	this.contact_list.focus();
	this.triggerEvent('listupdate', { list:this.contact_list, rowcount:this.contact_list.rowcount });
	}
	break;
	}

	if (response.unlock)
	this.hide_message(response.unlock);

	this.triggerEvent('responseafter', {response: response});
	this.triggerEvent('responseafter'+response.action, {response: response});

	// reset keep-alive interval
	this.start_keepalive();
	};

	// handle HTTP request errors
	this.http_error = function(request, status, err, lock, action)
	{
	var errmsg = request.statusText;

	this.set_busy(false, null, lock);
	request.abort();

	// don't display error message on page unload (#1488547)
	if (this.unload)
	return;

	if (request.status && errmsg)
	this.display_message(this.get_label('servererror') + ' (' + errmsg + ')', 'error');
	else if (status == 'timeout')
	this.display_message('requesttimedout', 'error');
	else if (request.status == 0 && status != 'abort')
	this.display_message('connerror', 'error');

	// redirect to url specified in location header if not empty
	var location_url = request.getResponseHeader("Location");
	if (location_url && this.env.action != 'compose') // don't redirect on compose screen, contents might get lost (#1488926)
	this.redirect(location_url);

	// 403 Forbidden response (CSRF prevention) - reload the page.
	// In case there's a new valid session it will be used, otherwise
	// login form will be presented (#1488960).
	if (request.status == 403) {
	(this.is_framed() ? parent : window).location.reload();
	return;
	}

	// re-send keep-alive requests after 30 seconds
	if (action == 'keep-alive')
	setTimeout(function(){ ref.keep_alive(); ref.start_keepalive(); }, 30000);
	};

	// handler for session errors detected on the server
	this.session_error = function(redirect_url)
	{
	this.env.server_error = 401;

	// save message in local storage and do not redirect
	if (this.env.action == 'compose') {
	this.save_compose_form_local();
	this.compose_skip_unsavedcheck = true;
	// stop keep-alive and refresh processes
	this.env.session_lifetime = 0;
	if (this._keepalive)
	clearInterval(this._keepalive);
	if (this._refresh)
	clearInterval(this._refresh);
	}
	else if (redirect_url) {
	setTimeout(function(){ ref.redirect(redirect_url, true); }, 2000);
	}
	};

	// callback when an iframe finished loading
	this.iframe_loaded = function(unlock)
	{
	if (!unlock)
	unlock = this.env.frame_lock;

	this.set_busy(false, null, unlock);

	if (this.submit_timer)
	clearTimeout(this.submit_timer);
	};

	/**
	Send multi-threaded parallel HTTP requests to the server for a list if items.
	The string '%' in either a GET query or POST parameters will be replaced with the respective item value.
	This is the argument object expected: {
	items: ['foo','bar','gna'], // list of items to send requests for
	action: 'task/some-action', // Roudncube action to call
	query: { q:'%s' }, // GET query parameters
	postdata: { source:'%s' }, // POST data (sends a POST request if present)
	threads: 3, // max. number of concurrent requests
	onresponse: function(data){ }, // Callback function called for every response received from server
	whendone: function(alldata){ } // Callback function called when all requests have been sent
	}
	*/
	this.multi_thread_http_request = function(prop)
	{
	var i, item, reqid = new Date().getTime(),
	threads = prop.threads \|\| 1;

	prop.reqid = reqid;
	prop.running = 0;
	prop.requests = [];
	prop.result = [];
	prop._items = $.extend([], prop.items); // copy items

	if (!prop.lock)
	prop.lock = this.display_message('', 'loading');

	// add the request arguments to the jobs pool
	this.http_request_jobs[reqid] = prop;

	// start n threads
	for (i=0; i < threads; i++) {
	item = prop._items.shift();
	if (item === undefined)
	break;

	prop.running++;
	prop.requests.push(this.multi_thread_send_request(prop, item));
	}

	return reqid;
	};

	// helper method to send an HTTP request with the given iterator value
	this.multi_thread_send_request = function(prop, item)
	{
	var k, postdata, query;

	// replace %s in post data
	if (prop.postdata) {
	postdata = {};
	for (k in prop.postdata) {
	postdata[k] = String(prop.postdata[k]).replace('%s', item);
	}
	postdata._reqid = prop.reqid;
	}
	// replace %s in query
	else if (typeof prop.query == 'string') {
	query = prop.query.replace('%s', item);
	query += '&_reqid=' + prop.reqid;
	}
	else if (typeof prop.query == 'object' && prop.query) {
	query = {};
	for (k in prop.query) {
	query[k] = String(prop.query[k]).replace('%s', item);
	}
	query._reqid = prop.reqid;
	}

	// send HTTP GET or POST request
	return postdata ? this.http_post(prop.action, postdata) : this.http_request(prop.action, query);
	};

	// callback function for multi-threaded http responses
	this.multi_thread_http_response = function(data, reqid)
	{
	var prop = this.http_request_jobs[reqid];
	if (!prop \|\| prop.running <= 0 \|\| prop.cancelled)
	return;

	prop.running--;

	// trigger response callback
	if (prop.onresponse && typeof prop.onresponse == 'function') {
	prop.onresponse(data);
	}

	prop.result = $.extend(prop.result, data);

	// send next request if prop.items is not yet empty
	var item = prop._items.shift();
	if (item !== undefined) {
	prop.running++;
	prop.requests.push(this.multi_thread_send_request(prop, item));
	}
	// trigger whendone callback and mark this request as done
	else if (prop.running == 0) {
	if (prop.whendone && typeof prop.whendone == 'function') {
	prop.whendone(prop.result);
	}

	this.set_busy(false, '', prop.lock);

	// remove from this.http_request_jobs pool
	delete this.http_request_jobs[reqid];
	}
	};

	// abort a running multi-thread request with the given identifier
	this.multi_thread_request_abort = function(reqid)
	{
	var prop = this.http_request_jobs[reqid];
	if (prop) {
	for (var i=0; prop.running > 0 && i < prop.requests.length; i++) {
	if (prop.requests[i].abort)
	prop.requests[i].abort();
	}

	prop.running = 0;
	prop.cancelled = true;
	this.set_busy(false, '', prop.lock);
	}
	};

	// post the given form to a hidden iframe
	this.async_upload_form = function(form, action, onload)
	{
	// create hidden iframe
	var ts = new Date().getTime(),
	frame_name = 'rcmupload' + ts,
	frame = this.dummy_iframe(frame_name);

	// handle upload errors by parsing iframe content in onload
	frame.on('load', {ts:ts}, onload);

	$(form).attr({
	target: frame_name,
	action: this.url(action, {_id: this.env.compose_id \|\| '', _uploadid: ts, _from: this.env.action}),
	method: 'POST'})
	.attr(form.encoding ? 'encoding' : 'enctype', 'multipart/form-data')
	.submit();

	return frame_name;
	};

	// create hidden iframe element
	this.dummy_iframe = function(name, src)
	{
	return $('<iframe>').attr({
	name: name,
	src: src,
	style: 'width:0;height:0;visibility:hidden',
	'aria-hidden': 'true'
	})
	.appendTo(document.body);
	};

	// html5 file-drop API
	this.document_drag_hover = function(e, over)
	{
	// don't e.preventDefault() here to not block text dragging on the page (#1490619)
	$(this.gui_objects.filedrop)[(over?'addClass':'removeClass')]('active');
	};

	this.file_drag_hover = function(e, over)
	{
	e.preventDefault();
	e.stopPropagation();
	$(this.gui_objects.filedrop)[(over?'addClass':'removeClass')]('hover');
	};

	// handler when files are dropped to a designated area.
	// compose a multipart form data and submit it to the server
	this.file_dropped = function(e)
	{
	// abort event and reset UI
	this.file_drag_hover(e, false);

	// prepare multipart form data composition
	var uri,
	files = e.target.files \|\| e.dataTransfer.files,
	args = {_id: this.env.compose_id \|\| this.env.cid \|\| '', _remote: 1, _from: this.env.action};

	if (!files \|\| !files.length) {
	// Roundcube attachment, pass its uri to the backend and attach
	if (uri = e.dataTransfer.getData('roundcube-uri')) {
	var ts = 'upload' + new Date().getTime(),
	// jQuery way to escape filename (#1490530)
	content = $('<span>').text(e.dataTransfer.getData('roundcube-name') \|\| this.get_label('attaching')).html();

	args._uri = uri;
	args._uploadid = ts;

	// add to attachments list
	if (!this.add2attachment_list(ts, {name: '', html: content, classname: 'uploading', complete: false}))
	this.file_upload_id = this.set_busy(true, 'attaching');

	this.http_post(this.env.filedrop.action \|\| 'upload', args);
	}

	return;
	}

	this.file_upload(files, args, {
	name: (this.env.filedrop.fieldname \|\| '_file') + (this.env.filedrop.single ? '' : '[]'),
	single: this.env.filedrop.single,
	filter: this.env.filedrop.filter,
	action: ref.env.filedrop.action
	});
	};

	// Files upload using ajax
	this.file_upload = function(files, post_args, props)
	{
	if (!window.FormData \|\| !files \|\| !files.length)
	return false;

	var f, i, fname, size = 0, numfiles = 0,
	formdata = new FormData(),
	fieldname = props.name \|\| '_file[]',
	limit = props.single ? 1 : files.length;
	args = $.extend({_remote: 1, _from: this.env.action}, post_args \|\| {});

	// add files to form data
	for (i=0; numfiles < limit && (f = files[i]); i++) {
	// filter by file type if requested
	if (props.filter && !f.type.match(new RegExp(props.filter))) {
	// TODO: show message to user
	continue;
	}

	formdata.append(fieldname, f);
	size += f.size;
	fname = f.name;
	numfiles++;
	}

	if (numfiles) {
	if (this.env.max_filesize && this.env.filesizeerror && size > this.env.max_filesize) {
	this.display_message(this.env.filesizeerror, 'error');
	return false;
	}

	if (this.env.max_filecount && this.env.filecounterror && numfiles > this.env.max_filecount) {
	this.display_message(this.env.filecounterror, 'error');
	return false;
	}

	var ts = 'upload' + new Date().getTime(),
	label = numfiles > 1 ? this.get_label('uploadingmany') : fname,
	// jQuery way to escape filename (#1490530)
	content = $('<span>').text(label).html();

	// add to attachments list
	if (!this.add2attachment_list(ts, {name: '', html: content, classname: 'uploading', complete: false}) && !props.lock)
	props.lock = this.file_upload_id = this.set_busy(true, 'uploading');

	args._uploadid = ts;
	args._unlock = props.lock;

	this.uploads[ts] = $.ajax({
	type: 'POST',
	dataType: 'json',
	url: this.url(props.action \|\| 'upload', args),
	contentType: false,
	processData: false,
	timeout: 0, // disable default timeout set in ajaxSetup()
	data: formdata,
	headers: {'X-Roundcube-Request': this.env.request_token},
	xhr: function() {
	var xhr = $.ajaxSettings.xhr();
	if (xhr.upload && ref.labels.uploadprogress) {
	xhr.upload.onprogress = function(e) {
	var msg = ref.file_upload_msg(e.loaded, e.total);
	if (msg) {
	$('#' + ts).find('.uploading').text(msg);
	}
	};
	}
	return xhr;
	},
	success: function(data) {
	delete ref.uploads[ts];
	ref.http_response(data);
	},
	error: function(o, status, err) {
	delete ref.uploads[ts];
	ref.remove_from_attachment_list(ts);
	ref.http_error(o, status, err, props.lock, 'attachment');
	}
	});
	}

	return true;
	};

	this.file_upload_msg = function(current, total)
	{
	if (total && current < total) {
	var percent = Math.round(current/total * 100),
	label = ref.get_label('uploadprogress');

	if (total >= 1073741824) {
	total = parseFloat(total/1073741824).toFixed(1) + ' ' . this.get_label('GB');
	current = parseFloat(current/1073741824).toFixed(1);
	}
	else if (total >= 1048576) {
	total = parseFloat(total/1048576).toFixed(1) + ' ' + this.get_label('MB');
	current = parseFloat(current/1048576).toFixed(1);
	}
	else if (total >= 1024) {
	total = parseInt(total/1024) + ' ' + this.get_label('KB');
	current = parseInt(current/1024);
	}
	else {
	total = total + ' ' + this.get_label('B');
	}

	return label.replace('$percent', percent + '%').replace('$current', current).replace('$total', total);
	}
	};

	// starts interval for keep-alive signal
	this.start_keepalive = function()
	{
	if (!this.env.session_lifetime \|\| this.env.framed \|\| this.env.extwin \|\| this.task == 'login' \|\| this.env.action == 'print')
	return;

	if (this._keepalive)
	clearInterval(this._keepalive);

	// use Math to prevent from an integer overflow (#5273)
	// maximum interval is 15 minutes, minimum is 30 seconds
	var interval = Math.min(1800, this.env.session_lifetime) * 0.5 * 1000;
	this._keepalive = setInterval(function() { ref.keep_alive(); }, interval < 30000 ? 30000 : interval);
	};

	// starts interval for refresh signal
	this.start_refresh = function()
	{
	if (!this.env.refresh_interval \|\| this.env.framed \|\| this.env.extwin \|\| this.task == 'login' \|\| this.env.action == 'print')
	return;

	if (this._refresh)
	clearInterval(this._refresh);

	this._refresh = setInterval(function(){ ref.refresh(); }, this.env.refresh_interval * 1000);
	};

	// sends keep-alive signal
	this.keep_alive = function()
	{
	if (!this.busy)
	this.http_request('keep-alive');
	};

	// sends refresh signal
	this.refresh = function()
	{
	if (this.busy) {
	// try again after 10 seconds
	setTimeout(function(){ ref.refresh(); ref.start_refresh(); }, 10000);
	return;
	}

	var params = {}, lock = this.set_busy(true, 'refreshing');

	if (this.task == 'mail' && this.gui_objects.mailboxlist)
	params = this.check_recent_params();

	params._last = Math.floor(this.env.lastrefresh.getTime() / 1000);
	this.env.lastrefresh = new Date();

	// plugins should bind to 'requestrefresh' event to add own params
	this.http_post('refresh', params, lock);
	};

	// returns check-recent request parameters
	this.check_recent_params = function()
	{
	var params = {_mbox: this.env.mailbox};

	if (this.gui_objects.mailboxlist)
	params._folderlist = 1;
	if (this.gui_objects.quotadisplay)
	params._quota = 1;
	if (this.env.search_request)
	params._search = this.env.search_request;

	if (this.gui_objects.messagelist) {
	params._list = 1;

	// message uids for flag updates check
	params._uids = $.map(this.message_list.rows, function(row, uid) { return uid; }).join(',');
	}

	return params;
	};


	/********************************************************/
	/******* helper methods *******/
	/********************************************************/

	/**
	* Quote html entities
	*/
	this.quote_html = function(str)
	{
	return String(str).replace(/</g, '<').replace(/>/g, '>').replace(/"/g, '"');
	};

	// get window.opener.rcmail if available
	this.opener = function(deep, filter)
	{
	var i, win = window.opener;

	// catch Error: Permission denied to access property rcmail
	try {
	if (win && !win.closed && win !== window) {
	// try parent of the opener window, e.g. preview frame
	if (deep && (!win.rcmail \|\| win.rcmail.env.framed) && win.parent && win.parent.rcmail)
	win = win.parent;

	if (win.rcmail && filter)
	for (i in filter)
	if (win.rcmail.env[i] != filter[i])
	return;

	return win.rcmail;
	}
	}
	catch (e) {}
	};

	// check if we're in show mode or if we have a unique selection
	// and return the message uid
	this.get_single_uid = function()
	{
	var uid = this.env.uid \|\| (this.message_list ? this.message_list.get_single_selection() : null);
	var result = ref.triggerEvent('get_single_uid', { uid: uid });
	return result \|\| uid;
	};

	// same as above but for contacts
	this.get_single_cid = function()
	{
	var cid = this.env.cid \|\| (this.contact_list ? this.contact_list.get_single_selection() : null);
	var result = ref.triggerEvent('get_single_cid', { cid: cid });
	return result \|\| cid;
	};

	// get the IMP mailbox of the message with the given UID
	this.get_message_mailbox = function(uid)
	{
	var msg = (this.env.messages && uid ? this.env.messages[uid] : null) \|\| {};
	return msg.mbox \|\| this.env.mailbox;
	};

	// build request parameters from single message id (maybe with mailbox name)
	this.params_from_uid = function(uid, params)
	{
	if (!params)
	params = {};

	params._uid = String(uid).split('-')[0];
	params._mbox = this.get_message_mailbox(uid);

	return params;
	};

	// gets cursor position
	this.get_caret_pos = function(obj)
	{
	if (obj.selectionEnd !== undefined)
	return obj.selectionEnd;

	return obj.value.length;
	};

	// moves cursor to specified position
	this.set_caret_pos = function(obj, pos)
	{
	try {
	if (obj.setSelectionRange)
	obj.setSelectionRange(pos, pos);
	}
	catch(e) {} // catch Firefox exception if obj is hidden
	};

	// get selected text from an input field
	this.get_input_selection = function(obj)
	{
	var start = 0, end = 0, normalizedValue = '';

	if (typeof obj.selectionStart == "number" && typeof obj.selectionEnd == "number") {
	normalizedValue = obj.value;
	start = obj.selectionStart;
	end = obj.selectionEnd;
	}

	return {start: start, end: end, text: normalizedValue.substr(start, end-start)};
	};

	// disable/enable all fields of a form
	this.lock_form = function(form, lock)
	{
	if (!form \|\| !form.elements)
	return;

	if (lock)
	this.disabled_form_elements = [];

	$.each(form.elements, function() {
	if (this.type == 'hidden')
	return;
	// remember which elem was disabled before lock
	if (lock && this.disabled)
	ref.disabled_form_elements.push(this);
	else if (lock \|\| $.inArray(this, ref.disabled_form_elements) < 0)
	this.disabled = lock;
	});
	};

	this.mailto_handler_uri = function()
	{
	return location.href.split('?')[0] + '?_task=mail&_action=compose&_to=%s';
	};

	this.register_protocol_handler = function(name)
	{
	try {
	window.navigator.registerProtocolHandler('mailto', this.mailto_handler_uri(), name);
	}
	catch(e) {
	this.display_message(String(e), 'error');
	}
	};

	this.check_protocol_handler = function(name, elem)
	{
	var nav = window.navigator;

	if (!nav \|\| (typeof nav.registerProtocolHandler != 'function')) {
	$(elem).addClass('disabled').click(function() {
	ref.display_message('nosupporterror', 'error');
	return false;
	});
	}
	else if (typeof nav.isProtocolHandlerRegistered == 'function') {
	var status = nav.isProtocolHandlerRegistered('mailto', this.mailto_handler_uri());
	if (status)
	$(elem).parent().find('.mailtoprotohandler-status').html(status);
	}
	else {
	$(elem).click(function() { ref.register_protocol_handler(name); return false; });
	}
	};

	// Checks browser capabilities eg. PDF support, TIF support
	this.browser_capabilities_check = function()
	{
	if (!this.env.browser_capabilities)
	this.env.browser_capabilities = {};

	$.each(['pdf', 'flash', 'tiff', 'webp'], function() {
	if (ref.env.browser_capabilities[this] === undefined)
	ref.env.browser_capabilities[this] = ref[this + '_support_check']();
	});
	};

	// Returns browser capabilities string
	this.browser_capabilities = function()
	{
	if (!this.env.browser_capabilities)
	return '';

	var n, ret = [];

	for (n in this.env.browser_capabilities)
	ret.push(n + '=' + this.env.browser_capabilities[n]);

	return ret.join();
	};

	this.tiff_support_check = function()
	{
	this.image_support_check('tiff');
	return 0;
	};

	this.webp_support_check = function()
	{
	this.image_support_check('webp');
	return 0;
	};

	this.image_support_check = function(type)
	{
	window.setTimeout(function() {
	var img = new Image();
	img.onload = function() { ref.env.browser_capabilities[type] = 1; };
	img.onerror = function() { ref.env.browser_capabilities[type] = 0; };
	img.src = ref.assets_path('program/resources/blank.' + type);
	}, 10);
	};

	this.pdf_support_check = function()
	{
	var i, plugin = navigator.mimeTypes ? navigator.mimeTypes["application/pdf"] : {},
	plugins = navigator.plugins,
	len = plugins.length,
	regex = /Adobe Reader\|PDF\|Acrobat/i;

	if (plugin && plugin.enabledPlugin)
	return 1;

	if ('ActiveXObject' in window) {
	try {
	if (plugin = new ActiveXObject("AcroPDF.PDF"))
	return 1;
	}
	catch (e) {}
	try {
	if (plugin = new ActiveXObject("PDF.PdfCtrl"))
	return 1;
	}
	catch (e) {}
	}

	for (i=0; i<len; i++) {
	plugin = plugins[i];
	if (typeof plugin === 'String') {
	if (regex.test(plugin))
	return 1;
	}
	else if (plugin.name && regex.test(plugin.name))
	return 1;
	}

	window.setTimeout(function() {
	$('<object>').attr({
	data: ref.assets_path('program/resources/dummy.pdf'),
	type: 'application/pdf',
	style: 'position: "absolute"; top: -1000px; height: 1px; width: 1px'
	})
	.on('load error', function(e) {
	ref.env.browser_capabilities.pdf = e.type == 'load' ? 1 : 0;
	$(this).remove();
	})
	.appendTo(document.body);
	}, 10);

	return 0;
	};

	this.flash_support_check = function()
	{
	var plugin = navigator.mimeTypes ? navigator.mimeTypes["application/x-shockwave-flash"] : {};

	if (plugin && plugin.enabledPlugin)
	return 1;

	if ('ActiveXObject' in window) {
	try {
	if (plugin = new ActiveXObject("ShockwaveFlash.ShockwaveFlash"))
	return 1;
	}
	catch (e) {}
	}

	return 0;
	};

	this.assets_path = function(path)
	{
	if (this.env.assets_path && !path.startsWith(this.env.assets_path)) {
	path = this.env.assets_path + path;
	}

	return path;
	};

	// Cookie setter
	this.set_cookie = function(name, value, expires)
	{
	setCookie(name, value, expires, this.env.cookie_path, this.env.cookie_domain, this.env.cookie_secure);
	};

	this.get_local_storage_prefix = function()
	{
	if (!this.local_storage_prefix)
	this.local_storage_prefix = 'roundcube.' + (this.env.user_id \|\| 'anonymous') + '.';

	return this.local_storage_prefix;
	};

	// wrapper for localStorage.getItem(key)
	this.local_storage_get_item = function(key, deflt, encrypted)
	{
	var item, result;

	// TODO: add encryption
	try {
	item = localStorage.getItem(this.get_local_storage_prefix() + key);
	result = JSON.parse(item);
	}
	catch (e) { }

	return result \|\| deflt \|\| null;
	};

	// wrapper for localStorage.setItem(key, data)
	this.local_storage_set_item = function(key, data, encrypted)
	{
	// try/catch to handle no localStorage support, but also error
	// in Safari-in-private-browsing-mode where localStorage exists
	// but can't be used (#1489996)
	try {
	// TODO: add encryption
	localStorage.setItem(this.get_local_storage_prefix() + key, JSON.stringify(data));
	return true;
	}
	catch (e) {
	return false;
	}
	};

	// wrapper for localStorage.removeItem(key)
	this.local_storage_remove_item = function(key)
	{
	try {
	localStorage.removeItem(this.get_local_storage_prefix() + key);
	return true;
	}
	catch (e) {
	return false;
	}
	};

	this.print_dialog = function()
	{
	if (bw.safari)
	setTimeout('window.print()', 10);
	else
	window.print();
	};
	} // end object rcube_webmail


	// some static methods
	rcube_webmail.long_subject_title = function(elem, indent, text_elem)
	{
	if (!elem.title) {
	var $elem = $(text_elem \|\| elem);
	if ($elem.width() + (indent \|\| 0) * 15 > $elem.parent().width())
	elem.title = rcube_webmail.subject_text($elem[0]);
	}
	};

	rcube_webmail.long_subject_title_ex = function(elem)
	{
	if (!elem.title) {
	var $elem = $(elem),
	txt = $.trim($elem.text()),
	indent = $('span.branch', $elem).width() \|\| 0,
	tmp = $('<span>').text(txt)
	.css({position: 'absolute', 'float': 'left', visibility: 'hidden',
	'font-size': $elem.css('font-size'), 'font-weight': $elem.css('font-weight')})
	.appendTo(document.body),
	w = tmp.width();

	tmp.remove();
	if (w + indent * 15 > $elem.width())
	elem.title = rcube_webmail.subject_text(elem);
	}
	};

	rcube_webmail.subject_text = function(elem)
	{
	var t = $(elem).clone();
	t.find('.skip-on-drag,.skip-content,.voice').remove();
	return $.trim(t.text());
	};

	// set event handlers on all iframe elements (and their contents)
	rcube_webmail.set_iframe_events = function(events)
	{
	$('iframe').each(function() {
	var frame = $(this);
	$.each(events, function(event_name, event_handler) {
	frame.on('load', function(e) {
	try { $(this).contents().on(event_name, event_handler); }
	catch (e) {/* catch possible permission error in IE */ }
	});

	try { frame.contents().on(event_name, event_handler); }
	catch (e) {/* catch possible permission error in IE */ }
	});
	});
	};

	rcube_webmail.prototype.get_cookie = getCookie;

	// copy event engine prototype
	rcube_webmail.prototype.addEventListener = rcube_event_engine.prototype.addEventListener;
	rcube_webmail.prototype.removeEventListener = rcube_event_engine.prototype.removeEventListener;
	rcube_webmail.prototype.triggerEvent = rcube_event_engine.prototype.triggerEvent;
	diff --git a/program/js/editor.js b/program/js/editor.js
	index 191196eb6..994ba638d 100644
	--- a/program/js/editor.js
	+++ b/program/js/editor.js
	@@ -1,849 +1,849 @@
	/**
	* Roundcube editor js library
	*
	* This file is part of the Roundcube Webmail client
	*
	* @licstart The following is the entire license notice for the
	* JavaScript code in this file.
	*
	* Copyright (c) 2006-2014, The Roundcube Dev Team
	*
	* The JavaScript code in this page is free software: you can
	* redistribute it and/or modify it under the terms of the GNU
	* General Public License (GNU GPL) as published by the Free Software
	* Foundation, either version 3 of the License, or (at your option)
	* any later version. The code is distributed WITHOUT ANY WARRANTY;
	* without even the implied warranty of MERCHANTABILITY or FITNESS
	* FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
	*
	* As additional permission under GNU GPL version 3 section 7, you
	* may distribute non-source (e.g., minimized or compacted) forms of
	* that code without the copy of the GNU GPL normally required by
	* section 4, provided you include this license notice and a URL
	* through which recipients can access the Corresponding Source.
	*
	* @licend The above is the entire license notice
	* for the JavaScript code in this file.
	*
	* @author Eric Stadtherr <estadtherr@gmail.com>
	* @author Aleksander Machniak <alec@alec.pl>
	*/

	/**
	* Roundcube Text Editor Widget class
	* @constructor
	*/
	function rcube_text_editor(config, id)
	{
	var ref = this,
	abs_url = location.href.replace(/[?#].*$/, '').replace(/\/$/, ''),
	conf = {
	selector: '#' + ($('#' + id).is('.mce_editor') ? id : 'fake-editor-id'),
	cache_suffix: 's=4080200',
	theme: 'modern',
	language: config.lang,
	content_css: rcmail.assets_path(config.content_css),
	menubar: false,
	statusbar: false,
	toolbar_items_size: 'small',
	extended_valid_elements: 'font[face\|size\|color\|style],span[id\|class\|align\|style]',
	fontsize_formats: '8pt 9pt 10pt 11pt 12pt 14pt 18pt 24pt 36pt',
	valid_children: '+body[style]',
	relative_urls: false,
	remove_script_host: false,
	convert_urls: false, // #1486944
	image_description: false,
	paste_webkit_style: "color font-size font-family",
	paste_data_images: true,
	browser_spellcheck: true,
	anchor_bottom: false,
	anchor_top: false
	};

	// register spellchecker for plain text editor
	this.spellcheck_observer = function() {};
	if (config.spellchecker) {
	this.spellchecker = config.spellchecker;
	if (config.spellcheck_observer) {
	this.spellchecker.spelling_state_observer = this.spellcheck_observer = config.spellcheck_observer;
	}
	}

	// secure spellchecker requests with Roundcube token
	// Note: must be registered only once (#1490311)
	if (!tinymce.registered_request_token) {
	tinymce.registered_request_token = true;
	tinymce.util.XHR.on('beforeSend', function(e) {
	e.xhr.setRequestHeader('X-Roundcube-Request', rcmail.env.request_token);
	});
	}

	// minimal editor
	if (config.mode == 'identity') {
	$.extend(conf, {
	plugins: 'autolink charmap code colorpicker hr image link paste tabfocus textcolor',
	toolbar: 'bold italic underline alignleft aligncenter alignright alignjustify'
	+ ' \| outdent indent charmap hr link unlink image code forecolor'
	+ ' \| fontselect fontsizeselect',
	file_browser_callback: function(name, url, type, win) { ref.file_browser_callback(name, url, type); },
	file_browser_callback_types: 'image'
	});
	}
	// full-featured editor
	else {
	$.extend(conf, {
	plugins: 'autolink charmap code colorpicker directionality link lists image media nonbreaking'
	+ ' paste table tabfocus textcolor searchreplace spellchecker',
	toolbar: 'bold italic underline \| alignleft aligncenter alignright alignjustify'
	+ ' \| bullist numlist outdent indent ltr rtl blockquote \| forecolor backcolor \| fontselect fontsizeselect'
	+ ' \| link unlink table \| $extra charmap image media \| code searchreplace undo redo',
	spellchecker_rpc_url: abs_url + '/?_task=utils&_action=spell_html&_remote=1',
	spellchecker_language: rcmail.env.spell_lang,
	accessibility_focus: false,
	file_browser_callback: function(name, url, type, win) { ref.file_browser_callback(name, url, type); },
	// @todo: support more than image (types: file, image, media)
	file_browser_callback_types: 'image media'
	});
	}

	// add TinyMCE plugins/buttons from Roundcube plugin
	$.each(config.extra_plugins \|\| [], function() {
	if (conf.plugins.indexOf(this) < 0)
	conf.plugins = conf.plugins + ' ' + this;
	});
	$.each(config.extra_buttons \|\| [], function() {
	if (conf.toolbar.indexOf(this) < 0)
	conf.toolbar = conf.toolbar.replace('$extra', '$extra ' + this);
	});

	// disable TinyMCE plugins/buttons from Roundcube plugin
	$.each(config.disabled_plugins \|\| [], function() {
	conf.plugins = conf.plugins.replace(this, '');
	});
	$.each(config.disabled_buttons \|\| [], function() {
	conf.toolbar = conf.toolbar.replace(this, '');
	});

	conf.toolbar = conf.toolbar.replace('$extra', '').replace(/\\|\s+\\|/g, '\|');

	// support external configuration settings e.g. from skin
	if (window.rcmail_editor_settings)
	$.extend(conf, window.rcmail_editor_settings);

	conf.setup = function(ed) {
	ed.on('init', function(ed) { ref.init_callback(ed); });
	// add handler for spellcheck button state update
	ed.on('SpellcheckStart SpellcheckEnd', function(args) {
	ref.spellcheck_active = args.type == 'spellcheckstart';
	ref.spellcheck_observer();
	});
	ed.on('keypress', function() {
	rcmail.compose_type_activity++;
	});
	// make links open on shift-click
	ed.on('click', function(e) {
	var link = $(e.target).closest('a');
	if (link.length && e.shiftKey) {
	window.open(link.get(0).href, '_blank');
	return false;
	}
	});
	ed.on('focus blur', function(e) {
	$(ed.getContainer()).toggleClass('focused');
	});

	if (conf.setup_callback)
	conf.setup_callback(ed);
	};

	rcmail.triggerEvent('editor-init', {config: conf, ref: ref});

	// textarea identifier
	this.id = id;
	// reference to active editor (if in HTML mode)
	this.editor = null;

	tinymce.init(conf);

	// react to real individual tinyMCE editor init
	this.init_callback = function(event)
	{
	this.editor = event.target;

	rcmail.triggerEvent('editor-load', {config: conf, ref: ref});

	if (rcmail.env.action == 'compose') {
	var area = $('#' + this.id),
	- height = $('div.mce-toolbar-grp:first', area.parent()).height();
	+ height = $('div.mce-toolbar-grp', area.parent()).first().height();

	// the editor might be still not fully loaded, making the editing area
	// inaccessible, wait and try again (#1490310)
	if (height > 200 \|\| height > area.height()) {
	return setTimeout(function () { ref.init_callback(event); }, 300);
	}

	var css = {},
	elem = rcube_find_object('_from'),
	fe = rcmail.env.compose_focus_elem;

	if (rcmail.env.default_font)
	css['font-family'] = rcmail.env.default_font;

	if (rcmail.env.default_font_size)
	css['font-size'] = rcmail.env.default_font_size;

	if (css['font-family'] \|\| css['font-size'])
	$(this.editor.getBody()).css(css);

	if (elem && elem.type == 'select-one') {
	// insert signature (only for the first time)
	if (!rcmail.env.identities_initialized)
	rcmail.change_identity(elem);

	// Focus previously focused element
	if (fe && fe.id != this.id && fe.nodeName != 'BODY') {
	window.focus(); // for WebKit (#1486674)
	fe.focus();
	rcmail.env.compose_focus_elem = null;
	}
	}
	}

	// set tabIndex and set focus to element that was focused before
	ref.tabindex(ref.force_focus \|\| (fe && fe.id == ref.id));

	// Trigger resize (needed for proper editor resizing in some browsers)
	$(window).resize();
	};

	// set tabIndex on tinymce editor
	this.tabindex = function(focus)
	{
	if (rcmail.env.task == 'mail' && this.editor) {
	var textarea = this.editor.getElement(),
	node = this.editor.getContentAreaContainer().childNodes[0];

	if (textarea && node)
	node.tabIndex = textarea.tabIndex;

	// find :prev and :next elements to get focus when tabbing away
	if (textarea.tabIndex > 0) {
	var x = null,
	tabfocus_elements = [':prev',':next'],
	el = tinymce.DOM.select('*[tabindex='+textarea.tabIndex+']:not(iframe)');

	tinymce.each(el, function(e, i) { if (e.id == ref.id) { x = i; return false; } });
	if (x !== null) {
	if (el[x-1] && el[x-1].id) {
	tabfocus_elements[0] = el[x-1].id;
	}
	if (el[x+1] && el[x+1].id) {
	tabfocus_elements[1] = el[x+1].id;
	}
	this.editor.settings.tabfocus_elements = tabfocus_elements.join(',');
	}
	}

	// ContentEditable reset fixes invisible cursor issue in Firefox < 25
	if (bw.mz && bw.vendver < 25)
	$(this.editor.getBody()).prop('contenteditable', false).prop('contenteditable', true);
	}

	if (focus)
	this.focus();
	};

	// focus the editor
	this.focus = function()
	{
	$(this.editor \|\| ('#' + this.id)).focus();
	this.force_focus = false;
	};

	// switch html/plain mode
	this.toggle = function(ishtml, noconvert)
	{
	var curr, content, result,
	// these non-printable chars are not removed on text2html and html2text
	// we can use them as temp signature replacement
	sig_mark = "\u0002\u0003",
	input = $('#' + this.id),
	signature = rcmail.env.identity ? rcmail.env.signatures[rcmail.env.identity] : null,
	is_sig = signature && signature.text && signature.text.length > 1;

	// apply spellcheck changes if spell checker is active
	this.spellcheck_stop();

	if (ishtml) {
	content = input.val();

	// replace current text signature with temp mark
	if (is_sig) {
	content = content.replace(/\r\n/, "\n");
	content = content.replace(signature.text.replace(/\r\n/, "\n"), sig_mark);
	}

	var init_editor = function(data) {
	// replace signature mark with html version of the signature
	if (is_sig)
	data = data.replace(sig_mark, '<div id="_rc_sig">' + signature.html + '</div>');

	ref.force_focus = true;
	input.val(data);
	tinymce.execCommand('mceAddEditor', false, ref.id);
	};

	// convert to html
	if (!noconvert) {
	result = rcmail.plain2html(content, init_editor);
	}
	else {
	init_editor(content);
	result = true;
	}
	}
	else if (this.editor) {
	if (is_sig) {
	// get current version of signature, we'll need it in
	// case of html2text conversion abort
	if (curr = this.editor.dom.get('_rc_sig'))
	curr = curr.innerHTML;

	// replace current signature with some non-printable characters
	// we use non-printable characters, because this replacement
	// is visible to the user
	// doing this after getContent() would be hard
	this.editor.dom.setHTML('_rc_sig', sig_mark);
	}

	// get html content
	content = this.editor.getContent();

	var init_plaintext = function(data) {
	tinymce.execCommand('mceRemoveEditor', false, ref.id);
	ref.editor = null;

	// replace signture mark with text version of the signature
	if (is_sig)
	data = data.replace(sig_mark, "\n" + signature.text);

	input.val(data).focus();
	rcmail.set_caret_pos(input.get(0), 0);
	};

	// convert html to text
	if (!noconvert) {
	result = rcmail.html2plain(content, init_plaintext);
	}
	else {
	init_plaintext(input.val());
	result = true;
	}

	// bring back current signature
	if (!result && curr)
	this.editor.dom.setHTML('_rc_sig', curr);
	}

	return result;
	};

	// start spellchecker
	this.spellcheck_start = function()
	{
	if (this.editor) {
	tinymce.execCommand('mceSpellCheck', true);
	this.spellcheck_observer();
	}
	else if (this.spellchecker && this.spellchecker.spellCheck) {
	this.spellchecker.spellCheck();
	}
	};

	// stop spellchecker
	this.spellcheck_stop = function()
	{
	var ed = this.editor;

	if (ed) {
	if (ed.plugins && ed.plugins.spellchecker && this.spellcheck_active) {
	ed.execCommand('mceSpellCheck', false);
	this.spellcheck_observer();
	}
	}
	else if (ed = this.spellchecker) {
	if (ed.state && ed.state != 'ready' && ed.state != 'no_error_found')
	$(ed.spell_span).trigger('click');
	}
	};

	// spellchecker state
	this.spellcheck_state = function()
	{
	var ed;

	if (this.editor)
	return this.spellcheck_active;
	else if ((ed = this.spellchecker) && ed.state)
	return ed.state != 'ready' && ed.state != 'no_error_found';
	};

	// resume spellchecking, highlight provided mispellings without a new ajax request
	this.spellcheck_resume = function(data)
	{
	var ed = this.editor;

	if (ed) {
	ed.plugins.spellchecker.markErrors(data);
	}
	else if (ed = this.spellchecker) {
	ed.prepare(false, true);
	ed.processData(data);
	}
	};

	// get selected (spellchecker) language
	this.get_language = function()
	{
	if (this.editor) {
	return this.editor.settings.spellchecker_language \|\| rcmail.env.spell_lang;
	}
	else if (this.spellchecker) {
	return GOOGIE_CUR_LANG;
	}
	};

	// set language for spellchecking
	this.set_language = function(lang)
	{
	var ed = this.editor;

	if (ed) {
	ed.settings.spellchecker_language = lang;
	}
	if (ed = this.spellchecker) {
	ed.setCurrentLanguage(lang);
	}
	};

	// replace selection with text snippet
	// input can be a string or object with 'text' and 'html' properties
	this.replace = function(input)
	{
	var format, ed = this.editor;

	if (!input)
	return false;

	// insert into tinymce editor
	if (ed) {
	ed.getWin().focus(); // correct focus in IE & Chrome

	if ($.type(input) == 'object' && ('html' in input)) {
	input = input.html;
	format = 'html';
	}
	else {
	if ($.type(input) == 'object')
	input = input.text \|\| '';

	input = rcmail.quote_html(input).replace(/\r?\n/g, '<br/>');
	format = 'text';
	}

	ed.selection.setContent(input, {format: format});
	}
	// replace selection in compose textarea
	else if (ed = rcube_find_object(this.id)) {
	var selection = $(ed).is(':focus') ? rcmail.get_input_selection(ed) : {start: 0, end: 0},
	value = ed.value,
	pre = value.substring(0, selection.start),
	end = value.substring(selection.end, value.length);

	if ($.type(input) == 'object')
	input = input.text \|\| '';

	// insert response text
	ed.value = pre + input + end;

	// set caret after inserted text
	rcmail.set_caret_pos(ed, selection.start + input.length);
	ed.focus();
	}
	};

	// Fill the editor with specified content
	// TODO: support format conversion
	this.set_content = function(content)
	{
	if (this.editor) {
	this.editor.setContent(content);
	this.editor.getWin().focus();
	}
	else if (ed = rcube_find_object(this.id)) {
	$(ed).val(content).focus();
	}
	};

	// get selected text (if no selection returns all text) from the editor
	this.get_content = function(args)
	{
	var sigstart, ed = this.editor, text = '', strip = false,
	defaults = {refresh: true, selection: false, nosig: false, format: 'html'};

	if (!args)
	args = defaults;
	else
	args = $.extend(defaults, args);

	// apply spellcheck changes if spell checker is active
	if (args.refresh) {
	this.spellcheck_stop();
	}

	// get selected text from tinymce editor
	if (ed) {
	if (args.selection)
	text = ed.selection.getContent({format: args.format});

	if (!text) {
	text = ed.getContent({format: args.format});
	// @todo: strip signature in html mode
	strip = args.format == 'text';
	}
	}
	// get selected text from compose textarea
	else if (ed = rcube_find_object(this.id)) {
	if (args.selection && $(ed).is(':focus')) {
	text = rcmail.get_input_selection(ed).text;
	}

	if (!text) {
	text = ed.value;
	strip = true;
	}
	}

	// strip off signature
	// @todo: make this optional
	if (strip && args.nosig) {
	sigstart = text.indexOf('-- \n');
	if (sigstart > 0) {
	text = text.substring(0, sigstart);
	}
	}

	return text;
	};

	// change user signature text
	this.change_signature = function(id, show_sig)
	{
	var position_element, cursor_pos, p = -1,
	input_message = $('#' + this.id),
	message = input_message.val(),
	sig = rcmail.env.identity;

	if (!this.editor) { // plain text mode
	// remove the 'old' signature
	if (show_sig && sig && rcmail.env.signatures && rcmail.env.signatures[sig]) {
	sig = rcmail.env.signatures[sig].text;
	sig = sig.replace(/\r\n/g, '\n');

	p = rcmail.env.top_posting ? message.indexOf(sig) : message.lastIndexOf(sig);
	if (p >= 0)
	message = message.substring(0, p) + message.substring(p+sig.length, message.length);
	}

	// add the new signature string
	if (show_sig && rcmail.env.signatures && rcmail.env.signatures[id]) {
	sig = rcmail.env.signatures[id].text;
	sig = sig.replace(/\r\n/g, '\n');

	// in place of removed signature
	if (p >= 0) {
	message = message.substring(0, p) + sig + message.substring(p, message.length);
	cursor_pos = p - 1;
	}
	// empty message or new-message mode
	else if (!message \|\| !rcmail.env.compose_mode) {
	cursor_pos = message.length;
	message += '\n\n' + sig;
	}
	else if (rcmail.env.top_posting && !rcmail.env.sig_below) {
	// at cursor position
	if (pos = rcmail.get_caret_pos(input_message.get(0))) {
	message = message.substring(0, pos) + '\n' + sig + '\n\n' + message.substring(pos, message.length);
	cursor_pos = pos;
	}
	// on top
	else {
	message = '\n\n' + sig + '\n\n' + message.replace(/^[\r\n]+/, '');
	cursor_pos = 0;
	}
	}
	else {
	message = message.replace(/[\r\n]+$/, '');
	cursor_pos = !rcmail.env.top_posting && message.length ? message.length + 1 : 0;
	message += '\n\n' + sig;
	}
	}
	else {
	cursor_pos = rcmail.env.top_posting ? 0 : message.length;
	}

	input_message.val(message);

	// move cursor before the signature
	rcmail.set_caret_pos(input_message.get(0), cursor_pos);
	}
	else if (show_sig && rcmail.env.signatures) { // html
	var sigElem = this.editor.dom.get('_rc_sig');

	// Append the signature as a div within the body
	if (!sigElem) {
	var body = this.editor.getBody();

	sigElem = $('<div id="_rc_sig"></div>').get(0);

	// insert at start or at cursor position in top-posting mode
	// (but not if the content is empty and not in new-message mode)
	if (rcmail.env.top_posting && !rcmail.env.sig_below
	&& rcmail.env.compose_mode && (body.childNodes.length > 1 \|\| $(body).text())
	) {
	this.editor.getWin().focus(); // correct focus in IE & Chrome

	var node = this.editor.selection.getNode();

	$(sigElem).insertBefore(node.nodeName == 'BODY' ? body.firstChild : node.nextSibling);
	$('<p>').append($('<br>')).insertBefore(sigElem);
	}
	else {
	body.appendChild(sigElem);
	position_element = rcmail.env.top_posting && rcmail.env.compose_mode ? body.firstChild : $(sigElem).prev();
	}
	}

	sigElem.innerHTML = rcmail.env.signatures[id] ? rcmail.env.signatures[id].html : '';
	}
	else if (!rcmail.env.top_posting) {
	position_element = $(this.editor.getBody()).children().last();
	}

	// put cursor before signature and scroll the window
	if (this.editor && position_element && position_element.length) {
	this.editor.selection.setCursorLocation(position_element.get(0));
	this.editor.getWin().scroll(0, position_element.offset().top);
	}
	};

	// trigger content save
	this.save = function()
	{
	if (this.editor) {
	this.editor.save();
	}
	};

	// focus the editing area
	this.focus = function()
	{
	(this.editor \|\| rcube_find_object(this.id)).focus();
	};

	// image selector
	this.file_browser_callback = function(field_name, url, type)
	{
	var i, button, elem, cancel, dialog, fn, hint, list = [],
	form = $('.upload-form').clone();

	// open image selector dialog
	this.editor.windowManager.open({
	title: rcmail.get_label('select' + type),
	width: 500,
	html: '<div id="image-selector" class="image-selector file-upload"><ul id="image-selector-list" class="attachmentslist"></ul></div>',
	buttons: [{text: 'Cancel', onclick: function() { ref.file_browser_close(); }}]
	});

	rcmail.env.file_browser_field = field_name;
	rcmail.env.file_browser_type = type;

	dialog = $('#image-selector');

	if (!form.length)
	form = this.file_upload_form(rcmail.gui_objects.uploadform);
	else
	form.find('button,a.button').slice(1).remove(); // need only the first button

	button = dialog.prepend(form).find('button,a.button')
	.text(rcmail.get_label('add' + type))
	.focus();

	// fill images list with available images
	for (i in rcmail.env.attachments) {
	if (elem = ref.file_browser_entry(i, rcmail.env.attachments[i])) {
	list.push(elem);
	}
	}

	- cancel = dialog.parent().parent().find('button:last').parent();
	+ cancel = dialog.parent().parent().find('button').last().parent();

	// Add custom Tab key handlers, tabindex does not work
	list = $('#image-selector-list').append(list).on('keydown', 'li', function(e) {
	if (e.which == 9) {
	if (rcube_event.get_modifier(e) == SHIFT_KEY) {
	if (!$(this).prev().focus().length) {
	button.focus();
	}
	}
	else if (!$(this).next().focus().length) {
	cancel.focus();
	}

	return false;
	}
	});

	button.keydown(function(e) {
	if (e.which == 9) { // Tab
	- if (rcube_event.get_modifier(e) == SHIFT_KEY \|\| !list.find('li:first').focus().length) {
	+ if (rcube_event.get_modifier(e) == SHIFT_KEY \|\| !list.find('li').first().focus().length) {
	cancel.focus();
	}

	return false;
	}

	if (e.which == 13) { // Enter
	this.click();
	}
	});

	cancel.keydown(function(e) {
	if (e.which == 9) {
	- if (rcube_event.get_modifier(e) != SHIFT_KEY \|\| !list.find('li:last').focus().length) {
	+ if (rcube_event.get_modifier(e) != SHIFT_KEY \|\| !list.find('li').last().focus().length) {
	button.focus();
	}

	return false;
	}
	});

	// enable drag-n-drop area
	if (window.FormData) {
	if (!rcmail.env.filedrop) {
	rcmail.env.filedrop = {};
	}
	if (rcmail.gui_objects.filedrop) {
	rcmail.env.old_file_drop = rcmail.gui_objects.filedrop;
	}

	rcmail.gui_objects.filedrop = $('#image-selector');
	rcmail.gui_objects.filedrop.addClass('droptarget')
	.on('dragover dragleave', function(e) {
	e.preventDefault();
	e.stopPropagation();
	$(this)[(e.type == 'dragover' ? 'addClass' : 'removeClass')]('hover');
	})
	.get(0).addEventListener('drop', function(e) { return rcmail.file_dropped(e); }, false);
	}

	// register handler for successful file upload
	if (!rcmail.env['file_dialog_event_' + type]) {
	rcmail.env['file_dialog_event+' + type] = true;
	rcmail.addEventListener('fileuploaded', function(attr) {
	var elem;
	if (elem = ref.file_browser_entry(attr.name, attr.attachment)) {
	list.prepend(elem);
	elem.focus();
	}
	});
	}

	// @todo: upload progress indicator
	};

	// close file browser window
	this.file_browser_close = function(url)
	{
	var input = $('#' + rcmail.env.file_browser_field);

	if (url)
	input.val(url);

	this.editor.windowManager.close();

	input.focus();

	if (rcmail.env.old_file_drop)
	rcmail.gui_objects.filedrop = rcmail.env.old_file_drop;
	};

	// creates file browser entry
	this.file_browser_entry = function(file_id, file)
	{
	if (!file.complete \|\| !file.mimetype) {
	return;
	}

	if (rcmail.file_upload_id) {
	rcmail.set_busy(false, null, rcmail.file_upload_id);
	}

	var rx, img_src;

	switch (rcmail.env.file_browser_type) {
	case 'image':
	rx = /^image\//i;
	break;

	case 'media':
	rx = /^video\//i;
	img_src = rcmail.assets_path('program/resources/tinymce/video.png');
	break;

	default:
	return;
	}

	if (rx.test(file.mimetype)) {
	var path = rcmail.env.comm_path + '&_from=' + rcmail.env.action,
	action = rcmail.env.compose_id ? '&_id=' + rcmail.env.compose_id + '&_action=display-attachment' : '&_action=upload-display',
	href = path + action + '&_file=' + file_id,
	img = $('<img>').attr({title: file.name, src: img_src ? img_src : href + '&_thumbnail=1'});

	return $('<li>').attr({tabindex: 0})
	.data('url', href)
	.append($('<span class="img">').append(img))
	.append($('<span class="name">').text(file.name))
	.click(function() { ref.file_browser_close($(this).data('url')); })
	.keydown(function(e) {
	if (e.which == 13) {
	ref.file_browser_close($(this).data('url'));
	}
	});
	}
	};

	this.file_upload_form = function(clone_form)
	{
	var hint = clone_form ? $(clone_form).find('.hint').text() : '',
	form = $('<form id="imageuploadform">').attr({method: 'post', enctype: 'multipart/form-data'});
	file = $('<input>').attr({name: '_file[]', type: 'file', multiple: true, style: 'opacity:0;height:1px;width:1px'})
	.change(function() { rcmail.upload_file(form, 'upload'); }),
	wrapper = $('<div class="upload-form">')
	.append($('<button>').attr({'class': 'btn btn-secondary attach', href: '#', onclick: "rcmail.upload_input('imageuploadform')"}));

	if (hint)
	wrapper.prepend($('<div class="hint">').text(hint));

	// clone existing upload form
	if (clone_form) {
	file.attr('name', $('input[type="file"]', clone_form).attr('name'));
	form.attr('action', $(clone_form).attr('action'));
	}

	form.append(file).append($('<input>').attr({type: 'hidden', name: '_token', value: rcmail.env.request_token}));

	return wrapper.append(form);
	};
	}
	diff --git a/program/js/treelist.js b/program/js/treelist.js
	index 6e4d3a599..e079f2cb1 100644
	--- a/program/js/treelist.js
	+++ b/program/js/treelist.js
	@@ -1,1260 +1,1260 @@
	/**
	* Roundcube Treelist Widget
	*
	* This file is part of the Roundcube Webmail client
	*
	* @licstart The following is the entire license notice for the
	* JavaScript code in this file.
	*
	* Copyright (c) 2013-2014, The Roundcube Dev Team
	*
	* The JavaScript code in this page is free software: you can
	* redistribute it and/or modify it under the terms of the GNU
	* General Public License (GNU GPL) as published by the Free Software
	* Foundation, either version 3 of the License, or (at your option)
	* any later version. The code is distributed WITHOUT ANY WARRANTY;
	* without even the implied warranty of MERCHANTABILITY or FITNESS
	* FOR A PARTICULAR PURPOSE. See the GNU GPL for more details.
	*
	* As additional permission under GNU GPL version 3 section 7, you
	* may distribute non-source (e.g., minimized or compacted) forms of
	* that code without the copy of the GNU GPL normally required by
	* section 4, provided you include this license notice and a URL
	* through which recipients can access the Corresponding Source.
	*
	* @licend The above is the entire license notice
	* for the JavaScript code in this file.
	*
	* @author Thomas Bruederli <roundcube@gmail.com>
	* @requires jquery.js, common.js
	*/


	/**
	* Roundcube Treelist widget class
	* @constructor
	*/
	function rcube_treelist_widget(node, p)
	{
	// apply some defaults to p
	p = $.extend({
	id_prefix: '',
	autoexpand: 1000,
	selectable: false,
	scroll_delay: 500,
	scroll_step: 5,
	scroll_speed: 20,
	save_state: false,
	keyboard: true,
	tabexit: true,
	parent_focus: false,
	check_droptarget: function(node) { return !node.virtual; }
	}, p \|\| {});

	var container = $(node),
	data = p.data \|\| [],
	indexbyid = {},
	selection = null,
	drag_active = false,
	search_active = false,
	last_search = '',
	has_focus = false,
	box_coords = {},
	item_coords = [],
	autoexpand_timer,
	autoexpand_item,
	body_scroll_top = 0,
	list_scroll_top = 0,
	scroll_timer,
	searchfield,
	tree_state,
	ui_droppable,
	ui_draggable,
	draggable_opts,
	droppable_opts,
	list_id = (container.attr('id') \|\| p.id_prefix \|\| '0'),
	me = this;


	/////// export public members and methods

	this.container = container;
	this.expand = expand;
	this.collapse = collapse;
	this.select = select;
	this.render = render;
	this.reset = reset;
	this.drag_start = drag_start;
	this.drag_end = drag_end;
	this.intersects = intersects;
	this.droppable = droppable;
	this.draggable = draggable;
	this.is_draggable = is_draggable;
	this.update = update_node;
	this.insert = insert;
	this.remove = remove;
	this.get_item = get_item;
	this.get_node = get_node;
	this.get_selection = get_selection;
	this.get_next = get_next;
	this.get_prev = get_prev;
	this.get_single_selection = get_selection;
	this.is_search = is_search;
	this.reset_search = reset_search;

	/////// startup code (constructor)

	// abort if node not found
	if (!container.length)
	return;

	if (p.data)
	index_data({ children:data });
	// load data from DOM
	else
	update_data();

	// scroll to the selected item
	if (selection) {
	scroll_to_node(id2dom(selection, true));
	}

	container.attr('role', 'tree')
	.on('focusin', function(e) {
	// TODO: only accept focus on virtual nodes from keyboard events
	has_focus = true;
	})
	.on('focusout', function(e) {
	has_focus = false;
	})
	// register click handlers on list
	.on('click', 'div.treetoggle', function(e) {
	toggle(dom2id($(this).parent()));
	e.stopPropagation();
	})
	.on('click', 'li', function(e) {
	// do not select record on checkbox/input click
	if ($(e.target).is('input'))
	return true;

	var node = p.selectable ? indexbyid[dom2id($(this))] : null;
	if (node && !node.virtual) {
	select(node.id);
	e.stopPropagation();
	}
	})
	// mute clicks on virtual folder links (they need tabindex="0" in order to be selectable by keyboard)
	.on('mousedown', 'a', function(e) {
	var link = $(e.target), node = indexbyid[dom2id(link.closest('li'))];
	if (node && node.virtual && !link.attr('href')) {
	e.preventDefault();
	e.stopPropagation();
	return false;
	}
	});

	// activate search function
	if (p.searchbox) {
	searchfield = $(p.searchbox).off('keyup.treelist').on('keyup.treelist', function(e) {
	var key = rcube_event.get_keycode(e),
	mod = rcube_event.get_modifier(e);

	switch (key) {
	case 9: // tab
	break;

	case 13: // enter
	search(this.value, true);
	return rcube_event.cancel(e);

	case 27: // escape
	reset_search();
	break;

	case 38: // arrow up
	case 37: // left
	case 39: // right
	case 40: // arrow down
	return; // ignore arrow keys

	default:
	search(this.value, false);
	break;
	}
	}).attr('autocomplete', 'off');

	// find the reset button for this search field
	searchfield.parent().find('a.reset').off('click.treelist').on('click.treelist', function(e) {
	reset_search();
	return false;
	})
	}

	$(document.body).on('keydown', keypress);

	// catch focus when clicking the list container area
	if (p.parent_focus) {
	container.parent(':not(body)').click(function(e) {
	// click on a checkbox does not catch the focus
	if ($(e.target).is('input'))
	return true;

	if (!has_focus && selection) {
	$(get_item(selection)).find(':focusable').first().focus();
	}
	else if (!has_focus) {
	container.children('li:has(:focusable)').first().find(':focusable').first().focus();
	}
	});
	}

	/////// private methods

	/**
	* Collaps a the node with the given ID
	*/
	function collapse(id, recursive, set)
	{
	var node;

	if (node = indexbyid[id]) {
	node.collapsed = typeof set == 'undefined' \|\| set;
	update_dom(node);

	if (recursive && node.children) {
	for (var i=0; i < node.children.length; i++) {
	collapse(node.children[i].id, recursive, set);
	}
	}

	me.triggerEvent(node.collapsed ? 'collapse' : 'expand', node);
	save_state(id, node.collapsed);
	}
	}

	/**
	* Expand a the node with the given ID
	*/
	function expand(id, recursive)
	{
	collapse(id, recursive, false);
	}

	/**
	* Toggle collapsed state of a list node
	*/
	function toggle(id, recursive)
	{
	var node;
	if (node = indexbyid[id]) {
	collapse(id, recursive, !node.collapsed);
	}
	}

	/**
	* Select a tree node by it's ID
	*/
	function select(id)
	{
	// allow subscribes to prevent selection change
	if (me.triggerEvent('beforeselect', indexbyid[id]) === false) {
	return;
	}

	if (selection) {
	id2dom(selection, true).removeClass('selected').removeAttr('aria-selected');
	if (search_active)
	id2dom(selection).removeClass('selected').removeAttr('aria-selected');
	selection = null;
	}

	if (!id)
	return;

	var li = id2dom(id, true);
	if (li.length) {
	li.addClass('selected').attr('aria-selected', 'true');
	selection = id;
	// TODO: expand all parent nodes if collapsed

	if (search_active)
	id2dom(id).addClass('selected').attr('aria-selected', 'true');

	scroll_to_node(li);
	}

	me.triggerEvent('select', indexbyid[id]);
	}

	/**
	* Getter for the currently selected node ID
	*/
	function get_selection()
	{
	return selection;
	}

	/**
	* Return the DOM element of the list item with the given ID
	*/
	function get_node(id)
	{
	return indexbyid[id];
	}

	/**
	* Return the DOM element of the list item with the given ID
	*/
	function get_item(id, real)
	{
	return id2dom(id, real).get(0);
	}

	/**
	* Insert the given node
	*/
	function insert(node, parent_id, sort)
	{
	var li, parent_li,
	parent_node = parent_id ? indexbyid[parent_id] : null
	search_ = search_active;

	// ignore, already exists
	if (indexbyid[node.id]) {
	return;
	}

	// apply saved state
	state = get_state(node.id, node.collapsed);
	if (state !== undefined) {
	node.collapsed = state;
	}

	// insert as child of an existing node
	if (parent_node) {
	node.level = parent_node.level + 1;
	if (!parent_node.children)
	parent_node.children = [];

	search_active = false;
	parent_node.children.push(node);
	parent_li = id2dom(parent_id);

	// re-render the entire subtree
	if (parent_node.children.length == 1) {
	render_node(parent_node, null, parent_li);
	li = id2dom(node.id);
	}
	else {
	// append new node to parent's child list
	li = render_node(node, parent_li.children('ul').first());
	}

	// list is in search mode
	if (search_) {
	search_active = search_;

	// add clone to current search results (top level)
	if (!li.is(':visible')) {
	$('<li>')
	.attr('id', li.attr('id') + '--xsR')
	.attr('class', li.attr('class'))
	.addClass('searchresult__')
	.append(li.children().first().clone(true, true))
	.appendTo(container);
	}
	}
	}
	// insert at top level
	else {
	node.level = 0;
	data.push(node);
	li = render_node(node, container);
	}

	indexbyid[node.id] = node;

	// set new reference to node.html after insert
	// will otherwise vanish in Firefox 3.6
	if (typeof node.html == 'object') {
	indexbyid[node.id].html = id2dom(node.id, true).children();
	}

	if (sort) {
	resort_node(li, typeof sort == 'string' ? '[class~="' + sort + '"]' : '');
	}
	}

	/**
	* Update properties of an existing node
	*/
	function update_node(id, updates, sort)
	{
	var li, parent_ul, parent_node, old_parent,
	node = indexbyid[id];

	if (node) {
	li = id2dom(id);
	parent_ul = li.parent();

	if (updates.id \|\| updates.html \|\| updates.children \|\| updates.classes \|\| updates.parent) {
	if (updates.parent && (parent_node = indexbyid[updates.parent])) {
	// remove reference from old parent's child list
	if (parent_ul.closest('li').length && (old_parent = indexbyid[dom2id(parent_ul.closest('li'))])) {
	old_parent.children = $.grep(old_parent.children, function(elem, i){ return elem.id != node.id; });
	}

	// append to new parent node
	parent_ul = id2dom(updates.parent).children('ul').first();
	if (!parent_node.children)
	parent_node.children = [];
	parent_node.children.push(node);
	}
	else if (updates.parent !== undefined) {
	parent_ul = container;
	}

	$.extend(node, updates);
	li = render_node(node, parent_ul, li);
	}

	if (node.id != id) {
	delete indexbyid[id];
	indexbyid[node.id] = node;
	}

	if (sort) {
	resort_node(li, typeof sort == 'string' ? '[class~="' + sort + '"]' : '');
	}
	}
	}

	/**
	* Helper method to sort the list of the given item
	*/
	function resort_node(li, filter)
	{
	var first, sibling,
	myid = li.get(0).id,
	sortname = li.children().first().text().toUpperCase();

	li.parent().children('li' + filter).each(function(i, elem) {
	if (i == 0)
	first = elem;
	if (elem.id == myid) {
	// skip
	}
	else if (elem.id != myid && sortname >= $(elem).children().first().text().toUpperCase()) {
	sibling = elem;
	}
	else {
	return false;
	}
	});

	if (sibling) {
	li.insertAfter(sibling);
	}
	else if (first && first.id != myid) {
	li.insertBefore(first);
	}

	// reload data from dom
	update_data();
	}

	/**
	* Remove the item with the given ID
	*/
	function remove(id)
	{
	var node, li, parent;

	if (node = indexbyid[id]) {
	li = id2dom(id, true);
	parent = li.parent();
	li.remove();

	node.deleted = true;
	delete indexbyid[id];

	if (search_active) {
	id2dom(id, false).remove();
	}

	// remove tree-toggle button and children list
	if (!parent.children().length) {
	parent.parent().find('div.treetoggle').remove();
	parent.remove();
	}

	return true;
	}

	return false;
	}

	/**
	* (Re-)read tree data from DOM
	*/
	function update_data()
	{
	data = walk_list(container, 0);
	}

	/**
	* Apply the 'collapsed' status of the data node to the corresponding DOM element(s)
	*/
	function update_dom(node)
	{
	var li = id2dom(node.id, true);
	li.attr('aria-expanded', node.collapsed ? 'false' : 'true');
	li.children('ul').first()[(node.collapsed ? 'hide' : 'show')]();
	li.children('div.treetoggle').removeClass('collapsed expanded').addClass(node.collapsed ? 'collapsed' : 'expanded');
	me.triggerEvent('toggle', node);
	}

	/**
	*
	*/
	function reset(keep_content, keep_selection)
	{
	if (!keep_selection)
	select('');

	data = [];
	indexbyid = {};
	drag_active = false;

	if (keep_content) {
	if (draggable_opts) {
	if (ui_draggable)
	draggable('destroy');
	draggable(draggable_opts);
	}

	if (droppable_opts) {
	if (ui_droppable)
	droppable('destroy');
	droppable(droppable_opts);
	}

	update_data();
	}
	else {
	container.html('');
	}

	reset_search(keep_selection);
	}

	/**
	*
	*/
	function search(q, enter)
	{
	q = String(q).toLowerCase();

	if (!q.length)
	return reset_search();
	else if (q == last_search && !enter)
	return 0;

	var hits = [];
	var search_tree = function(items) {
	$.each(items, function(i, node) {
	var li, sli;
	if (!node.virtual && !node.deleted && String(node.text).toLowerCase().indexOf(q) >= 0 && hits.indexOf(node.id) < 0) {
	li = id2dom(node.id);

	// skip already filtered nodes
	if (li.data('filtered'))
	return;

	sli = $('<li>')
	.attr('id', li.attr('id') + '--xsR')
	.attr('class', li.attr('class'))
	.addClass('searchresult__')
	// append all elements like links and inputs, but not sub-trees
	.append(li.children(':not(div.treetoggle,ul)').clone(true, true))
	.appendTo(container);
	hits.push(node.id);
	}

	if (node.children && node.children.length) {
	search_tree(node.children);
	}
	});
	};

	// reset old search results
	if (search_active) {
	$(container).children('li.searchresult__').remove();
	search_active = false;
	}

	// hide all list items
	$(container).children('li').hide().removeClass('selected');

	// search recursively in tree (to keep sorting order)
	search_tree(data);
	search_active = true;

	me.triggerEvent('search', { query: q, last: last_search, count: hits.length, ids: hits, execute: enter\|\|false });

	last_search = q;

	return hits.count;
	}

	/**
	*
	*/
	function reset_search(nosel)
	{
	if (searchfield)
	searchfield.val('');

	$(container).children('li.searchresult__').remove();
	$(container).children('li').filter(function() { return !$(this).data('filtered'); }).show();

	search_active = false;

	me.triggerEvent('search', { query: false, last: last_search });
	last_search = '';

	if (selection && !nosel)
	select(selection);
	}

	/**
	*
	*/
	function is_search()
	{
	return search_active;
	}

	/**
	* Render the tree list from the internal data structure
	*/
	function render()
	{
	if (me.triggerEvent('renderBefore', data) === false)
	return;

	// remove all child nodes
	container.html('');

	// render child nodes
	for (var i=0; i < data.length; i++) {
	data[i].level = 0;
	render_node(data[i], container);
	}

	me.triggerEvent('renderAfter', container);
	}

	/**
	* Render a specific node into the DOM list
	*/
	function render_node(node, parent, replace)
	{
	if (node.deleted)
	return;

	var li = $('<li>')
	.attr('id', p.id_prefix + (p.id_encode ? p.id_encode(node.id) : node.id))
	.attr('role', 'treeitem')
	.addClass((node.classes \|\| []).join(' '))
	.data('id', node.id);

	if (replace) {
	replace.replaceWith(li);
	if (parent)
	li.appendTo(parent);
	}
	else
	li.appendTo(parent);

	if (typeof node.html == 'string')
	li.html(node.html);
	else if (typeof node.html == 'object')
	li.append(node.html);

	if (!node.text)
	node.text = li.children().first().text();

	if (node.virtual)
	li.addClass('virtual');
	if (node.id == selection)
	li.addClass('selected');

	// add child list and toggle icon
	if (node.children && node.children.length) {
	li.attr('aria-expanded', node.collapsed ? 'false' : 'true');
	$('<div class="treetoggle '+(node.collapsed ? 'collapsed' : 'expanded') + '"> </div>').appendTo(li);
	var ul = $('<ul>').appendTo(li).attr('class', node.childlistclass).attr('role', 'group');
	if (node.collapsed)
	ul.hide();

	for (var i=0; i < node.children.length; i++) {
	node.children[i].level = node.level + 1;
	render_node(node.children[i], ul);
	}
	}

	return li;
	}

	/**
	* Recursively walk the DOM tree and build an internal data structure
	* representing the skeleton of this tree list.
	*/
	function walk_list(ul, level)
	{
	var result = [];
	ul.children('li').each(function(i,e){
	var state, li = $(e), sublist = li.children('ul');
	var node = {
	id: dom2id(li),
	classes: String(li.attr('class')).split(' '),
	virtual: li.hasClass('virtual'),
	level: level,
	html: li.children().first().get(0).outerHTML,
	text: li.children().first().text(),
	children: walk_list(sublist, level+1)
	}

	if (sublist.length) {
	node.childlistclass = sublist.attr('class');
	}
	if (node.children.length) {
	if (node.collapsed === undefined)
	node.collapsed = sublist.css('display') == 'none';

	// apply saved state
	state = get_state(node.id, node.collapsed);
	if (state !== undefined) {
	node.collapsed = state;
	sublist[(state?'hide':'show')]();
	}

	if (!li.children('div.treetoggle').length)
	$('<div class="treetoggle '+(node.collapsed ? 'collapsed' : 'expanded') + '"> </div>').appendTo(li);

	li.attr('aria-expanded', node.collapsed ? 'false' : 'true');
	}
	if (li.hasClass('selected')) {
	li.attr('aria-selected', 'true');
	selection = node.id;
	}

	li.data('id', node.id);

	// declare list item as treeitem
	li.attr('role', 'treeitem').attr('aria-level', node.level+1);

	// allow virtual nodes to receive focus
	if (node.virtual) {
	- li.children('a:first').attr('tabindex', '0');
	+ li.children('a').first().attr('tabindex', '0');
	}

	result.push(node);
	indexbyid[node.id] = node;
	});

	ul.attr('role', level == 0 ? 'tree' : 'group');

	return result;
	}

	/**
	* Recursively walk the data tree and index nodes by their ID
	*/
	function index_data(node)
	{
	if (node.id) {
	indexbyid[node.id] = node;
	}
	for (var c=0; node.children && c < node.children.length; c++) {
	index_data(node.children[c]);
	}
	}

	/**
	* Get the (stripped) node ID from the given DOM element
	*/
	function dom2id(li)
	{
	var domid = String(li.attr('id')).replace(new RegExp('^' + (p.id_prefix) \|\| '%'), '').replace(/--xsR$/, '');
	return p.id_decode ? p.id_decode(domid) : domid;
	}

	/**
	* Get the <li> element for the given node ID
	*/
	function id2dom(id, real)
	{
	var domid = p.id_encode ? p.id_encode(id) : id,
	suffix = search_active && !real ? '--xsR' : '';

	return $('#' + p.id_prefix + domid + suffix, container);
	}

	/**
	* Scroll the parent container to make the given list item visible
	*/
	function scroll_to_node(li)
	{
	var scroller = container.parent(),
	current_offset = scroller.scrollTop(),
	rel_offset = li.offset().top - scroller.offset().top;

	if (rel_offset < 0 \|\| rel_offset + li.height() > scroller.height())
	scroller.scrollTop(rel_offset + current_offset);
	}

	/**
	* Save node collapse state to localStorage
	*/
	function save_state(id, collapsed)
	{
	if (p.save_state && window.rcmail) {
	var key = 'treelist-' + list_id;
	if (!tree_state) {
	tree_state = rcmail.local_storage_get_item(key, {});
	}

	if (tree_state[id] != collapsed) {
	tree_state[id] = collapsed;
	rcmail.local_storage_set_item(key, tree_state);
	}
	}
	}

	/**
	* Read node collapse state from localStorage
	*/
	function get_state(id)
	{
	if (p.save_state && window.rcmail) {
	if (!tree_state) {
	tree_state = rcmail.local_storage_get_item('treelist-' + list_id, {});
	}
	return tree_state[id];
	}

	return undefined;
	}

	/**
	* Handler for keyboard events on treelist
	*/
	function keypress(e)
	{
	var target = e.target \|\| {},
	keyCode = rcube_event.get_keycode(e);

	if (!has_focus \|\| target.nodeName == 'INPUT' && keyCode != 38 && keyCode != 40 \|\| target.nodeName == 'TEXTAREA' \|\| target.nodeName == 'SELECT')
	return true;

	switch (keyCode) {
	case 38:
	case 40:
	case 63232: // 'up', in safari keypress
	case 63233: // 'down', in safari keypress
	var li = p.keyboard ? container.find(':focus').closest('li') : [];
	if (li.length) {
	focus_next(li, (mod = keyCode == 38 \|\| keyCode == 63232 ? -1 : 1));
	}
	return rcube_event.cancel(e);

	case 37: // Left arrow key
	case 39: // Right arrow key
	var id, node, li = container.find(':focus').closest('li');
	if (li.length) {
	id = dom2id(li);
	node = indexbyid[id];
	if (node && node.children.length && node.collapsed != (keyCode == 37))
	toggle(id, rcube_event.get_modifier(e) == SHIFT_KEY); // toggle subtree
	}
	return false;

	case 9: // Tab
	if (p.keyboard && p.tabexit) {
	// jump to last/first item to move focus away from the treelist widget by tab
	var limit = rcube_event.get_modifier(e) == SHIFT_KEY ? 'first' : 'last';
	focus_noscroll(container.find('li[role=treeitem]:has(a)')[limit]().find('a:'+limit));
	}
	break;
	}

	return true;
	}

	function focus_next(li, dir, from_child)
	{
	var mod = dir < 0 ? 'prev' : 'next',
	next = li[mod](), limit, parent;

	if (dir > 0 && !from_child && li.children('ul[role=group]:visible').length) {
	- li.children('ul').children('li:first').find('a:first').focus();
	+ li.children('ul').children('li').first().find('a').first().focus();
	}
	else if (dir < 0 && !from_child && next.children('ul[role=group]:visible').length) {
	- next.children('ul').children('li:last').find('a:first').focus();
	+ next.children('ul').children('li').last().find('a').first().focus();
	}
	- else if (next.length && next.find('a:first').focus().length) {
	+ else if (next.length && next.find('a').first().focus().length) {
	// focused
	}
	else {
	parent = li.parent().closest('li[role=treeitem]');
	if (parent.length)
	if (dir < 0) {
	- parent.find('a:first').focus();
	+ parent.find('a').first().focus();
	}
	else {
	focus_next(parent, dir, true);
	}
	}
	}

	/**
	* Focus the given element without scrolling the list container
	*/
	function focus_noscroll(elem)
	{
	if (elem.length) {
	var frame = container.parent().get(0) \|\| { scrollTop:0 },
	y = frame.scrollTop \|\| frame.scrollY;
	elem.focus();
	frame.scrollTop = y;
	}
	}


	function get_next()
	{
	var node, child;
	if (selection && (node = id2dom(selection))) {
	- child = node.children('ul').children('li:first');
	+ child = node.children('ul').children('li').first();
	if (child.length) {
	return dom2id(child);
	}

	child = node.next();
	if (child.length) {
	return dom2id(child);
	}

	while ((node = node.parent('ul').parent('li')) && node.length) {
	child = node.next();
	if (child.length) {
	return dom2id(child);
	}
	}
	}
	}

	function get_prev()
	{
	var node, prev, child;
	if (selection && (node = id2dom(selection))) {
	prev = node.prev();
	- child = prev.find('li:last');
	+ child = prev.find('li').last();

	if (child.length) {
	return dom2id(child);
	}

	if (prev.length) {
	return dom2id(prev);
	}

	node = node.parent().parent();
	if (node.length && node.is('li')) {
	return dom2id(node);
	}
	}
	}

	///// drag & drop support

	/**
	* When dragging starts, compute absolute bounding boxes of the list and it's items
	* for faster comparisons while mouse is moving
	*/
	function drag_start(force)
	{
	if (!force && drag_active)
	return;

	drag_active = true;

	var li, item, height,
	pos = container.offset();

	body_scroll_top = bw.ie ? 0 : window.pageYOffset;
	list_scroll_top = container.parent().scrollTop();
	pos.top += list_scroll_top;

	box_coords = {
	x1: pos.left,
	y1: pos.top,
	x2: pos.left + container.width(),
	y2: pos.top + container.height()
	};

	item_coords = [];
	for (var id in indexbyid) {
	li = id2dom(id);
	item = li.children().first().get(0);
	if (item && (height = item.offsetHeight)) {
	pos = $(item).offset();
	pos.top += list_scroll_top;
	item_coords[id] = {
	x1: pos.left,
	y1: pos.top,
	x2: pos.left + item.offsetWidth,
	y2: pos.top + height,
	on: id == autoexpand_item
	};
	}
	}

	// enable auto-scrolling of list container
	if (container.height() > container.parent().height()) {
	container.parent().on('mousemove.treelist', function(e) {
	var scroll = 0,
	mouse = rcube_event.get_mouse_pos(e);
	mouse.y -= container.parent().offset().top;

	if (mouse.y < 25 && list_scroll_top > 0) {
	scroll = -1; // up
	}
	else if (mouse.y > container.parent().height() - 25) {
	scroll = 1; // down
	}

	if (drag_active && scroll != 0) {
	if (!scroll_timer)
	scroll_timer = window.setTimeout(function(){ drag_scroll(scroll); }, p.scroll_delay);
	}
	else if (scroll_timer) {
	window.clearTimeout(scroll_timer);
	scroll_timer = null;
	}
	})
	.on('mouseleave.treelist', function() {
	if (scroll_timer) {
	window.clearTimeout(scroll_timer);
	scroll_timer = null;
	}
	});
	}
	}

	/**
	* Signal that dragging has stopped
	*/
	function drag_end()
	{
	container.parent().off('.treelist');
	$('li.droptarget', container).removeClass('droptarget');

	if (!drag_active)
	return;

	drag_active = false;
	scroll_timer = null;

	if (autoexpand_timer) {
	clearTimeout(autoexpand_timer);
	autoexpand_timer = null;
	autoexpand_item = null;
	}
	}

	/**
	* Scroll list container in the given direction
	*/
	function drag_scroll(dir)
	{
	if (!drag_active)
	return;

	var old_top = list_scroll_top;
	container.parent().get(0).scrollTop += p.scroll_step * dir;
	list_scroll_top = container.parent().scrollTop();
	scroll_timer = null;

	if (list_scroll_top != old_top)
	scroll_timer = window.setTimeout(function(){ drag_scroll(dir); }, p.scroll_speed);
	}

	/**
	* Determine if the given mouse coords intersect the list and one of its items
	*/
	function intersects(mouse, highlight)
	{
	// offsets to compensate for scrolling while dragging a message
	var boffset = bw.ie ? -document.documentElement.scrollTop : body_scroll_top,
	moffset = container.parent().scrollTop(),
	result = null;

	mouse.top = mouse.y + moffset - boffset;

	// no intersection with list bounding box
	if (mouse.x < box_coords.x1 \|\| mouse.x >= box_coords.x2 \|\| mouse.top < box_coords.y1 \|\| mouse.top >= box_coords.y2) {
	// TODO: optimize performance for this operation
	if (highlight)
	$('li.droptarget', container).removeClass('droptarget');
	return result;
	}

	// check intersection with visible list items
	var id, pos, node;
	for (id in item_coords) {
	pos = item_coords[id];
	if (mouse.x >= pos.x1 && mouse.x < pos.x2 && mouse.top >= pos.y1 && mouse.top < pos.y2) {
	node = indexbyid[id];

	// if the folder is collapsed, expand it after the configured time
	if (node.children && node.children.length && node.collapsed && p.autoexpand && autoexpand_item != id) {
	if (autoexpand_timer)
	clearTimeout(autoexpand_timer);

	autoexpand_item = id;
	autoexpand_timer = setTimeout(function() {
	expand(autoexpand_item);
	drag_start(true); // re-calculate item coords
	autoexpand_item = null;
	if (ui_droppable)
	$.ui.ddmanager.prepareOffsets($.ui.ddmanager.current, null);
	}, p.autoexpand);
	}
	else if (autoexpand_timer && autoexpand_item != id) {
	clearTimeout(autoexpand_timer);
	autoexpand_item = null;
	autoexpand_timer = null;
	}

	// check if this item is accepted as drop target
	if (p.check_droptarget(node)) {
	if (highlight) {
	id2dom(id).addClass('droptarget');
	pos.on = true;
	}
	result = id;
	}
	else {
	result = null;
	}
	}
	else if (pos.on) {
	id2dom(id).removeClass('droptarget');
	pos.on = false;
	}
	}

	return result;
	}

	/**
	* Wrapper for jQuery.UI.droppable() activation on this widget
	*
	* @param object Options as passed to regular .droppable() function
	*/
	function droppable(opts)
	{
	if (!opts) opts = {};

	if ($.type(opts) == 'string') {
	if (opts == 'destroy') {
	ui_droppable = null;
	}
	$('li:not(.virtual)', container).droppable(opts);
	return this;
	}

	droppable_opts = opts;

	var my_opts = $.extend({
	greedy: true,
	tolerance: 'pointer',
	hoverClass: 'droptarget',
	addClasses: false
	}, opts);

	my_opts.activate = function(e, ui) {
	drag_start();
	ui_droppable = ui;
	if (opts.activate)
	opts.activate(e, ui);
	};

	my_opts.deactivate = function(e, ui) {
	drag_end();
	ui_droppable = null;
	if (opts.deactivate)
	opts.deactivate(e, ui);
	};

	my_opts.over = function(e, ui) {
	intersects(rcube_event.get_mouse_pos(e), false);
	if (opts.over)
	opts.over(e, ui);
	};

	$('li:not(.virtual)', container).droppable(my_opts);

	return this;
	}

	/**
	* Wrapper for jQuery.UI.draggable() activation on this widget
	*
	* @param object Options as passed to regular .draggable() function
	*/
	function draggable(opts)
	{
	if (!opts) opts = {};

	if ($.type(opts) == 'string') {
	if (opts == 'destroy') {
	ui_draggable = null;
	}
	$('li:not(.virtual)', container).draggable(opts);
	return this;
	}

	draggable_opts = opts;

	var my_opts = $.extend({
	appendTo: 'body',
	revert: 'invalid',
	iframeFix: true,
	addClasses: false,
	cursorAt: {left: -20, top: 5},
	create: function(e, ui) { ui_draggable = ui; },
	helper: function(e) {
	return $('<div>').attr('id', 'rcmdraglayer')
	.text($.trim($(e.target).first().text()));
	}
	}, opts);

	$('li:not(.virtual)', container).draggable(my_opts);

	return this;
	}

	function is_draggable()
	{
	return !!ui_draggable;
	}
	}

	// use event processing functions from Roundcube's rcube_event_engine
	rcube_treelist_widget.prototype.addEventListener = rcube_event_engine.prototype.addEventListener;
	rcube_treelist_widget.prototype.removeEventListener = rcube_event_engine.prototype.removeEventListener;
	rcube_treelist_widget.prototype.triggerEvent = rcube_event_engine.prototype.triggerEvent;
	diff --git a/skins/classic/functions.js b/skins/classic/functions.js
	index f5a47720b..0e7c02095 100644
	--- a/skins/classic/functions.js
	+++ b/skins/classic/functions.js
	@@ -1,1124 +1,1124 @@
	/**
	* Roundcube functions for default skin interface
	*
	* @licstart The following is the entire license notice for the
	* JavaScript code in this file.
	*
	* Copyright (c) 2006-2014, The Roundcube Dev Team
	*
	* The JavaScript code in this page is free software: you can redistribute it
	* and/or modify it under the terms of the GNU General Public License
	* as published by the Free Software Foundation, either version 3 of
	* the License, or (at your option) any later version.
	*
	* @licend The above is the entire license notice
	* for the JavaScript code in this file.
	*/

	/**
	* Settings
	*/

	function rcube_init_settings_tabs()
	{
	var el, cl, container = $('#tabsbar'),
	- last_tab = $('span:last', container),
	+ last_tab = $('span', container).last(),
	tab = '#settingstabpreferences',
	action = window.rcmail && rcmail.env.action ? rcmail.env.action : null;

	// move About tab to the end
	if (last_tab && last_tab.attr('id') != 'settingstababout' && (el = $('#settingstababout'))) {
	cl = el.clone(true);
	el.remove();
	last_tab.after(cl);
	}

	// get selected tab
	if (action)
	tab = '#settingstab' + (action.indexOf('identity')>0 ? 'identities' : action.replace(/\./g, ''));

	$(tab).addClass('tablink-selected');
	$('a', tab).removeAttr('onclick').click(function() { return false; });
	}

	// Fieldsets-to-tabs converter
	// Warning: don't place "caller" <script> inside page element (id)
	function rcube_init_tabs(id, current)
	{
	var content = $('#'+id),
	fs = content.children('fieldset');

	if (!fs.length)
	return;

	current = current ? current : 0;

	// create tabs container (if not exists)
	var tabs = content.find('.tabsbar');
	if (!tabs.length)
	tabs = $('<div>').addClass('tabsbar').appendTo(content);

	// convert fildsets into tabs
	fs.each(function(idx) {
	var tab, a, elm = $(this), legend = elm.children('legend');

	// skip invisible or already initialized fieldsets
	if (!elm.is(':visible') \|\| elm.hasClass('tabbed'))
	return;

	// create a tab
	a = $('<a>').text(legend.text()).attr('href', '#');
	tab = $('<span>').attr({'id': 'tab'+idx, 'class': 'tablink'})
	.click(function() { rcube_show_tab(id, idx); return false })

	// remove legend
	legend.remove();
	// style fieldset
	elm.addClass('tabbed');
	// style selected tab
	if (idx == current)
	tab.addClass('tablink-selected');

	// add the tab to container
	tab.append(a).appendTo(tabs);
	});

	// hide not selected tabs
	fs.each(function(idx) { if (idx != current) $(this).hide(); });
	}

	function rcube_show_tab(id, index)
	{
	var fs = $('#'+id).children('fieldset');

	fs.each(function(idx) {
	// Show/hide fieldset (tab content)
	$(this)[index==idx ? 'show' : 'hide']();
	// Select/unselect tab
	$('#tab'+idx).toggleClass('tablink-selected', idx==index);
	});
	}

	/**
	* Mail UI
	*/

	function rcube_mail_ui()
	{
	this.popups = {
	markmenu: {id:'markmessagemenu'},
	replyallmenu: {id:'replyallmenu'},
	forwardmenu: {id:'forwardmenu', editable:1},
	searchmenu: {id:'searchmenu', editable:1},
	messagemenu: {id:'messagemenu'},
	attachmentmenu: {id:'attachmentmenu'},
	dragmenu: {id:'dragmenu', sticky:1},
	groupmenu: {id:'groupoptionsmenu', above:1},
	mailboxmenu: {id:'mailboxoptionsmenu', above:1},
	composemenu: {id:'composeoptionsmenu', editable:1, overlap:1},
	spellmenu: {id:'spellmenu'},
	responsesmenu: {id:'responsesmenu'},
	// toggle: #1486823, #1486930
	uploadmenu: {id:'attachment-form', editable:1, above:1, toggle:!bw.ie&&!bw.linux },
	uploadform: {id:'upload-form', editable:1, toggle:!bw.ie&&!bw.linux }
	};

	var obj;
	for (var k in this.popups) {
	obj = $('#'+this.popups[k].id)
	if (obj.length)
	this.popups[k].obj = obj;
	else {
	delete this.popups[k];
	}
	}
	}

	rcube_mail_ui.prototype = {

	show_popup: function(popup, show, config)
	{
	var obj;
	// auto-register menu object
	if (!this.popups[popup] && (obj = $('#'+popup)) && obj.length)
	this.popups[popup] = $.extend(config, {id: popup, obj: obj});

	if (typeof this[popup] == 'function')
	return this[popup](show);
	else
	return this.show_popupmenu(popup, show);
	},

	show_popupmenu: function(popup, show)
	{
	var obj = this.popups[popup].obj,
	above = this.popups[popup].above,
	ref = $(this.popups[popup].link ? this.popups[popup].link : rcube_find_object(popup+'link'));

	if (typeof show == 'undefined')
	show = obj.is(':visible') ? false : true;
	else if (this.popups[popup].toggle && show && this.popups[popup].obj.is(':visible') )
	show = false;

	if (show && ref.length) {
	var parent = ref.parent(),
	win = $(window),
	pos = parent.hasClass('dropbutton') ? parent.offset() : ref.offset();

	if (!above && pos.top + ref.height() + obj.height() > win.height())
	above = true;
	if (pos.left + obj.width() > win.width())
	pos.left = win.width() - obj.width() - 30;

	obj.css({ left:pos.left, top:(pos.top + (above ? -obj.height() : ref.height())) });
	}

	obj[show?'show':'hide']();
	},

	dragmenu: function(show)
	{
	this.popups.dragmenu.obj[show?'show':'hide']();
	},

	forwardmenu: function(show)
	{
	$("input[name='forwardtype'][value="+(rcmail.env.forward_attachment ? 1 : 0)+"]", this.popups.forwardmenu.obj)
	.prop('checked', true);
	this.show_popupmenu('forwardmenu', show);
	},

	uploadmenu: function(show)
	{
	if (typeof show == 'object') // called as event handler
	show = false;

	// clear upload form
	if (!show) {
	try { $('#attachment-form form')[0].reset(); }
	catch(e){} // ignore errors
	}

	if (rcmail.mailvelope_editor)
	return;

	this.show_popupmenu('uploadmenu', show);

	if (!document.all && this.popups.uploadmenu.obj.is(':visible'))
	$('#attachment-form input[type=file]').click();
	},

	searchmenu: function(show)
	{
	var obj = this.popups.searchmenu.obj,
	ref = rcube_find_object('searchmenulink');

	if (typeof show == 'undefined')
	show = obj.is(':visible') ? false : true;

	if (show && ref) {
	var pos = $(ref).offset();
	obj.css({left:pos.left, top:(pos.top + ref.offsetHeight + 2)});

	if (rcmail.env.search_mods) {
	var n, all,
	list = $('input:checkbox[name="s_mods[]"]', obj),
	mbox = rcmail.env.mailbox,
	mods = rcmail.env.search_mods,
	scope = rcmail.env.search_scope \|\| 'base';

	if (rcmail.env.task == 'mail') {
	mods = mods[mbox] ? mods[mbox] : mods['*'];
	all = 'text';
	$('input:radio[name="s_scope"]').prop('checked', false).filter('#s_scope_'+scope).prop('checked', true);
	}
	else {
	all = '*';
	}

	if (mods[all])
	list.map(function() {
	this.checked = true;
	this.disabled = this.value != all;
	});
	else {
	list.prop('disabled', false).prop('checked', false);
	for (n in mods)
	$('#s_mod_' + n).prop('checked', true);
	}
	}
	}
	obj[show?'show':'hide']();
	},

	set_searchmod: function(elem)
	{
	var all, m, task = rcmail.env.task,
	mods = rcmail.env.search_mods,
	mbox = rcmail.env.mailbox,
	scope = $('input[name="s_scope"]:checked').val();

	if (scope == 'all')
	mbox = '*';

	if (!mods)
	mods = {};

	if (task == 'mail') {
	if (!mods[mbox])
	mods[mbox] = rcube_clone_object(mods['*']);
	m = mods[mbox];
	all = 'text';
	}
	else { //addressbook
	m = mods;
	all = '*';
	}

	if (!elem.checked)
	delete(m[elem.value]);
	else
	m[elem.value] = 1;

	// mark all fields
	if (elem.value == all) {
	$('input:checkbox[name="s_mods[]"]').map(function() {
	if (this == elem)
	return;

	this.checked = true;
	if (elem.checked) {
	this.disabled = true;
	delete m[this.value];
	}
	else {
	this.disabled = false;
	m[this.value] = 1;
	}
	});
	}

	rcmail.set_searchmods(m);
	},

	show_listmenu: function(p)
	{
	var self = this, buttons = {}, $dialog = $('#listmenu');

	// close the dialog
	if ($dialog.is(':visible')) {
	$dialog.dialog('close', p.originalEvent);
	return;
	}

	// set form values
	$('input[name="sort_col"][value="'+rcmail.env.sort_col+'"]').prop('checked', true);
	$('input[name="sort_ord"][value="DESC"]').prop('checked', rcmail.env.sort_order == 'DESC');
	$('input[name="sort_ord"][value="ASC"]').prop('checked', rcmail.env.sort_order != 'DESC');
	$('input[name="view"][value="thread"]').prop('checked', rcmail.env.threading ? true : false);
	$('input[name="view"][value="list"]').prop('checked', rcmail.env.threading ? false : true);

	// set checkboxes
	$('input[name="list_col[]"]').each(function() {
	$(this).prop('checked', $.inArray(this.value, rcmail.env.listcols) != -1);
	});

	$.each(['widescreen', 'desktop', 'list'], function() {
	$('input[name="layout"][value="' + this + '"]').prop('checked', rcmail.env.layout == this);
	});
	$('#listoptions-columns', $dialog)[rcmail.env.layout == 'widescreen' ? 'hide' : 'show']();

	buttons[rcmail.gettext('save')] = function(e) {
	$dialog.dialog('close', e);
	self.save_listmenu();
	};

	$dialog.dialog({
	modal: true,
	resizable: false,
	closeOnEscape: true,
	title: null,
	open: function(e) {
	var maxheight = 0;
	$('#listmenu fieldset').each(function() {
	var height = $(this).height();
	if (height > maxheight) {
	maxheight = height;
	}
	}).css("min-height", maxheight+"px").height(maxheight);

	setTimeout(function() { $dialog.find('a, input:not(:disabled)').not('[aria-disabled=true]').first().focus(); }, 100);
	},
	close: function(e) {
	$dialog.dialog('destroy').hide();
	if (e.originalEvent && rcube_event.is_keyboard(e.originalEvent))
	$('#listmenulink').focus();
	},
	buttons: buttons,
	minWidth: 500,
	width: $dialog.width()+20
	}).show();
	},

	save_listmenu: function()
	{
	var sort = $('input[name="sort_col"]:checked').val(),
	ord = $('input[name="sort_ord"]:checked').val(),
	thread = $('input[name="view"]:checked').val(),
	layout = $('input[name="layout"]:checked').val(),
	cols = $('input[name="list_col[]"]:checked')
	.map(function(){ return this.value; }).get();

	rcmail.set_list_options(cols, sort, ord, thread == 'thread' ? 1 : 0, layout);
	},

	spellmenu: function(show)
	{
	var link, li,
	lang = rcmail.spellcheck_lang(),
	menu = this.popups.spellmenu.obj,
	ul = $('ul', menu);

	if (!ul.length) {
	ul = $('<ul>');

	for (i in rcmail.env.spell_langs) {
	li = $('<li>');
	link = $('<a href="#"></a>').text(rcmail.env.spell_langs[i])
	.addClass('active').data('lang', i)
	.click(function() {
	rcmail.spellcheck_lang_set($(this).data('lang'));
	});

	link.appendTo(li);
	li.appendTo(ul);
	}

	ul.appendTo(menu);
	}

	// select current language
	$('li', ul).each(function() {
	var el = $('a', this);
	if (el.data('lang') == lang)
	el.addClass('selected');
	else if (el.hasClass('selected'))
	el.removeClass('selected');
	});

	this.show_popupmenu('spellmenu', show);
	},

	show_attachmentmenu: function(elem, event)
	{
	var id = elem.parentNode.id.replace(/^attach/, '');

	$.each(['open', 'download', 'rename'], function() {
	var action = this;
	$('#attachmenu' + action).off('click').attr('onclick', '').click(function(e) {
	return rcmail.command(action + '-attachment', id, this);
	});
	});

	this.popups.attachmentmenu.link = elem;
	rcmail.command('menu-open', {menu: 'attachmentmenu', id: id}, elem, event);
	},

	menu_open: function(p)
	{
	if (p && p.name == 'messagelistmenu')
	this.show_listmenu();
	},

	body_mouseup: function(e)
	{
	var target = e.target; ref = this;

	$.each(this.popups, function(i, popup) {
	if (popup.obj.is(':visible') && target != rcube_find_object(i + 'link')
	&& !popup.toggle
	&& target != popup.obj.get(0) // check if scroll bar was clicked (#1489832)
	&& (!popup.editable \|\| !ref.target_overlaps(target, popup.id))
	&& (!popup.sticky \|\| !rcube_mouse_is_over(e, rcube_find_object(popup.id)))
	&& !$(target).is('.folder-selector-link') && !$(target).children('.folder-selector-link').length
	) {
	window.setTimeout('rcmail_ui.show_popup("'+i+'",false);', 50);
	}
	});
	},

	target_overlaps: function (target, elementid)
	{
	var element = rcube_find_object(elementid);
	while (target.parentNode) {
	if (target.parentNode == element)
	return true;
	target = target.parentNode;
	}
	return false;
	},

	body_keydown: function(e)
	{
	if (e.keyCode == 27) {
	for (var k in this.popups) {
	if (this.popups[k].obj.is(':visible'))
	this.show_popup(k, false);
	}
	}
	},

	// Mail view layout initialization and change handler
	set_layout: function(p)
	{
	var layout = p ? p.new_layout : rcmail.env.layout,
	top = $('#mailcontframe'),
	bottom = $('#mailpreviewframe');

	if (p)
	$('#mailrightcontainer').removeClass().addClass(layout);

	if (!this.mailviewsplitv) {
	this.mailviewsplitv = new rcube_splitter({id:'mailviewsplitterv', p1: 'mailleftcontainer', p2: 'mailrightcontainer',
	orientation: 'v', relative: true, start: 165, callback: rcube_render_mailboxlist });
	this.mailviewsplitv.init();
	}

	$('#mailviewsplitter')[layout == 'desktop' ? 'show' : 'hide']();
	$('#mailviewsplitter2')[layout == 'widescreen' ? 'show' : 'hide']();
	$('#mailpreviewframe')[layout != 'list' ? 'show' : 'hide']();
	rcmail.env.contentframe = layout == 'list' ? null : 'messagecontframe';

	if (layout == 'widescreen') {
	$('#countcontrols').detach().appendTo($('#messagelistheader'));
	top.css({height: 'auto', width: 400});
	bottom.css({top: 0, left: 410, height: 'auto'}).show();
	if (!this.mailviewsplit2) {
	this.mailviewsplit2 = new rcube_splitter({id:'mailviewsplitter2', p1: 'mailcontframe', p2: 'mailpreviewframe',
	orientation: 'v', relative: true, start: 405});
	this.mailviewsplit2.init();
	}
	else
	this.mailviewsplit2.resize();
	}
	else if (layout == 'desktop') {
	top.css({height: 200, width: '100%'});
	bottom.css({left: 0, top: 210, height: 'auto'}).show();
	if (!this.mailviewsplit) {
	this.mailviewsplit = new rcube_splitter({id:'mailviewsplitter', p1: 'mailcontframe', p2: 'mailpreviewframe',
	orientation: 'h', relative: true, start: 205});
	this.mailviewsplit.init();
	}
	else
	this.mailviewsplit.resize();
	}
	else { // layout == 'list'
	top.css({height: 'auto', width: '100%'});
	bottom.hide();
	}

	if (p && p.old_layout == 'widescreen') {
	$('#countcontrols').detach().appendTo($('#messagelistfooter'));
	}
	},


	/* Message composing */
	init_compose_form: function()
	{
	var f, v, field, fields = ['cc', 'bcc', 'replyto', 'followupto'],
	div = document.getElementById('compose-div'),
	headers_div = document.getElementById('compose-headers-div');

	// Show input elements with non-empty value
	for (f=0; f<fields.length; f++) {
	v = fields[f]; field = $('#_'+v);
	if (field.length) {
	field.on('change', {v:v}, function(e) { if (this.value) rcmail_ui.show_header_form(e.data.v); });
	if (field.val() != '')
	rcmail_ui.show_header_form(v);
	}
	}

	// prevent from form data loss when pressing ESC key in IE
	if (bw.ie) {
	var form = rcube_find_object('form');
	form.onkeydown = function (e) {
	if (rcube_event.get_keycode(e) == 27)
	rcube_event.cancel(e);
	};
	}

	$(window).resize(function() {
	rcmail_ui.resize_compose_body();
	});

	$('#compose-container').resize(function() {
	rcmail_ui.resize_compose_body();
	});

	div.style.top = (parseInt(headers_div.offsetHeight, 10) + 3) + 'px';
	$(window).resize();

	// fixes contacts-table position when there's more than one addressbook
	$('#contacts-table').css('top', $('#directorylist').height() + 24 + 'px');

	// contacts search submit
	$('#quicksearchbox').keydown(function(e) {
	if (rcube_event.get_keycode(e) == 13)
	rcmail.command('search');
	});
	},

	resize_compose_body: function()
	{
	var div = $('#compose-div .boxlistcontent'),
	w = div.width() - 6,
	h = div.height() - 2,
	x = bw.ie \|\| bw.opera ? 4 : 0;

	$('#compose-body_ifr').width(w + 6).height(h - 1 - $('div.mce-toolbar').height());
	$('#compose-body').width(w-x).height(h);
	$('#googie_edit_layer').width(w).height(h);
	},

	resize_compose_body_ev: function()
	{
	window.setTimeout(function(){rcmail_ui.resize_compose_body();}, 100);
	},

	show_header_form: function(id)
	{
	var row, s,
	link = document.getElementById(id + '-link');

	if ((s = this.next_sibling(link)))
	s.style.display = 'none';
	else if ((s = this.prev_sibling(link)))
	s.style.display = 'none';

	link.style.display = 'none';

	if ((row = document.getElementById('compose-' + id))) {
	var div = document.getElementById('compose-div'),
	headers_div = document.getElementById('compose-headers-div');
	$(row).show();
	div.style.top = (parseInt(headers_div.offsetHeight, 10) + 3) + 'px';
	this.resize_compose_body();
	}

	return false;
	},

	hide_header_form: function(id)
	{
	var row, ns,
	link = document.getElementById(id + '-link'),
	parent = link.parentNode,
	links = parent.getElementsByTagName('a');

	link.style.display = '';

	for (var i=0; i<links.length; i++)
	if (links[i].style.display != 'none')
	for (var j=i+1; j<links.length; j++)
	if (links[j].style.display != 'none')
	if ((ns = this.next_sibling(links[i]))) {
	ns.style.display = '';
	break;
	}

	document.getElementById('_' + id).value = '';

	if ((row = document.getElementById('compose-' + id))) {
	var div = document.getElementById('compose-div'),
	headers_div = document.getElementById('compose-headers-div');
	row.style.display = 'none';
	div.style.top = (parseInt(headers_div.offsetHeight, 10) + 1) + 'px';
	this.resize_compose_body();
	}

	return false;
	},

	next_sibling: function(elm)
	{
	var ns = elm.nextSibling;
	while (ns && ns.nodeType == 3)
	ns = ns.nextSibling;
	return ns;
	},

	prev_sibling: function(elm)
	{
	var ps = elm.previousSibling;
	while (ps && ps.nodeType == 3)
	ps = ps.previousSibling;
	return ps;
	},

	enable_command: function(p)
	{
	if (p.command == 'reply-list' && rcmail.env.reply_all_mode == 1) {
	var label = rcmail.gettext(p.status ? 'replylist' : 'replyall');
	$('a.button.replyAll').attr('title', label);
	}
	else if (p.command == 'compose-encrypted') {
	// show the toolbar button for Mailvelope
	$('#messagetoolbar a.encrypt').parent().show();
	}
	else if (p.command == 'compose-encrypted-signed') {
	// enable selector for encrypt and sign
	$('#encryptionmenulink').show();
	}
	},

	folder_search_init: function(container)
	{
	// animation to unfold list search box
	$('.boxtitle a.search', container).click(function(e) {
	var title = $('.boxtitle', container),
	box = $('.listsearchbox', container),
	dir = box.is(':visible') ? -1 : 1,
	height = 24 + ($('select', box).length ? 24 : 0);

	box.slideToggle({
	duration: 160,
	progress: function(animation, progress) {
	if (dir < 0) progress = 1 - progress;
	$('.boxlistcontent', container).css('top', (title.outerHeight() + height * progress) + 'px');
	},
	complete: function() {
	box.toggleClass('expanded');
	if (box.is(':visible')) {
	box.find('input[type=text]').focus();
	}
	else {
	$('a.reset', box).click();
	}
	// TODO: save state in cookie
	}
	});

	return false;
	});
	}

	};

	/**
	* Roundcube generic layer (floating box) class
	*
	* @constructor
	*/
	function rcube_layer(id, attributes)
	{
	this.name = id;

	// create a new layer in the current document
	this.create = function(arg)
	{
	var l = (arg.x) ? arg.x : 0,
	t = (arg.y) ? arg.y : 0,
	w = arg.width,
	h = arg.height,
	z = arg.zindex,
	vis = arg.vis,
	parent = arg.parent,
	obj = document.createElement('DIV');

	obj.id = this.name;
	obj.style.position = 'absolute';
	obj.style.visibility = (vis) ? (vis==2) ? 'inherit' : 'visible' : 'hidden';
	obj.style.left = l+'px';
	obj.style.top = t+'px';
	if (w)
	obj.style.width = w.toString().match(/\%$/) ? w : w+'px';
	if (h)
	obj.style.height = h.toString().match(/\%$/) ? h : h+'px';
	if (z)
	obj.style.zIndex = z;

	if (parent)
	parent.appendChild(obj);
	else
	document.body.appendChild(obj);

	this.elm = obj;
	};

	// create new layer
	if (attributes != null) {
	this.create(attributes);
	this.name = this.elm.id;
	}
	else // just refer to the object
	this.elm = document.getElementById(id);

	if (!this.elm)
	return false;


	// ******* layer object properties *******

	this.css = this.elm.style;
	this.event = this.elm;
	this.width = this.elm.offsetWidth;
	this.height = this.elm.offsetHeight;
	this.x = parseInt(this.elm.offsetLeft);
	this.y = parseInt(this.elm.offsetTop);
	this.visible = (this.css.visibility=='visible' \|\| this.css.visibility=='show' \|\| this.css.visibility=='inherit') ? true : false;


	// ******* layer object methods *******

	// move the layer to a specific position
	this.move = function(x, y)
	{
	this.x = x;
	this.y = y;
	this.css.left = Math.round(this.x)+'px';
	this.css.top = Math.round(this.y)+'px';
	};

	// change the layers width and height
	this.resize = function(w,h)
	{
	this.css.width = w+'px';
	this.css.height = h+'px';
	this.width = w;
	this.height = h;
	};

	// show or hide the layer
	this.show = function(a)
	{
	if(a == 1) {
	this.css.visibility = 'visible';
	this.visible = true;
	}
	else if(a == 2) {
	this.css.visibility = 'inherit';
	this.visible = true;
	}
	else {
	this.css.visibility = 'hidden';
	this.visible = false;
	}
	};

	// write new content into a Layer
	this.write = function(cont)
	{
	this.elm.innerHTML = cont;
	};

	};

	/**
	* Scroller
	*
	* @deprecated Use treelist widget
	*/
	function rcmail_scroller(list, top, bottom)
	{
	var ref = this;

	this.list = $(list);
	this.top = $(top);
	this.bottom = $(bottom);
	this.step_size = 6;
	this.step_time = 20;
	this.delay = 500;

	this.top
	.mouseenter(function() { ref.ts = window.setTimeout(function() { ref.scroll('down'); }, ref.delay); })
	.mouseout(function() { if (ref.ts) window.clearTimeout(ref.ts); });

	this.bottom
	.mouseenter(function() { ref.ts = window.setTimeout(function() { ref.scroll('up'); }, ref.delay); })
	.mouseout(function() { if (ref.ts) window.clearTimeout(ref.ts); });

	this.scroll = function(dir)
	{
	var ref = this, size = this.step_size;

	if (!rcmail.drag_active)
	return;

	if (dir == 'down')
	size *= -1;

	this.list.get(0).scrollTop += size;
	this.ts = window.setTimeout(function() { ref.scroll(dir); }, this.step_time);
	};
	};

	// Abbreviate mailbox names to fit width of the container
	function rcube_render_mailboxlist()
	{
	var list = $('#mailboxlist > li > a, #mailboxlist ul:visible > li > a');

	// it's too slow with really big number of folders
	if (list.length > 100)
	return;

	list.each(function() {
	var elem = $(this),
	text = elem.data('text');

	if (!text) {
	text = elem.text().replace(/\s+$[0-9]+$$/, '');
	elem.data('text', text);
	}

	if (text.length < 6)
	return;

	var abbrev = fit_string_to_size(text, elem, elem.width() - elem.children('span.unreadcount').width() - 16);
	if (abbrev != text)
	elem.attr('title', text);
	elem.contents().filter(function(){ return (this.nodeType == 3); }).get(0).data = abbrev;
	});
	};

	// inspired by https://gist.github.com/24261/7fdb113f1e26111bd78c0c6fe515f6c0bf418af5
	function fit_string_to_size(str, elem, len)
	{
	var w, span, $span, result = str, ellip = '...';

	if (!rcmail.env.tmp_span) {
	// it should be appended to elem to use the same css style
	// but for performance reasons we'll append it to body (once)
	span = $('<b>').css({visibility: 'hidden', padding: '0px',
	'font-family': elem.css('font-family'),
	'font-size': elem.css('font-size')})
	.appendTo($('body', document)).get(0);
	rcmail.env.tmp_span = span;
	}
	else {
	span = rcmail.env.tmp_span;
	}

	$span = $(span);
	$span.text(result);

	// on first run, check if string fits into the length already.
	w = span.offsetWidth;
	if (w > len) {
	var cut = Math.max(1, Math.floor(str.length * ((w - len) / w) / 2)),
	mid = Math.floor(str.length / 2),
	offLeft = mid,
	offRight = mid;

	while (true) {
	offLeft = mid - cut;
	offRight = mid + cut;
	$span.text(str.substring(0,offLeft) + ellip + str.substring(offRight));

	// break loop if string fits size
	if (offLeft < 3 \|\| span.offsetWidth)
	break;

	cut++;
	}

	// build resulting string
	result = str.substring(0,offLeft) + ellip + str.substring(offRight);
	}

	return result;
	};

	function update_quota(data)
	{
	percent_indicator(rcmail.gui_objects.quotadisplay, data);

	if (data.table) {
	var menu = $('#quotamenu');

	if (!menu.length)
	menu = $('<div id="quotamenu" class="popupmenu">').appendTo($('body'));

	menu.html(data.table);
	$('#quotaimg').css('cursor', 'pointer').off('click').on('click', function(e) {
	return rcmail.command('menu-open', 'quotamenu', e.target, e);
	});
	}
	};

	// percent (quota) indicator
	function percent_indicator(obj, data)
	{
	if (!data \|\| !obj)
	return false;

	var limit_high = 80,
	limit_mid = 55,
	width = data.width ? data.width : rcmail.env.indicator_width ? rcmail.env.indicator_width : 100,
	height = data.height ? data.height : rcmail.env.indicator_height ? rcmail.env.indicator_height : 14,
	quota = data.percent ? Math.abs(parseInt(data.percent)) : 0,
	quota_width = parseInt(quota / 100 * width),
	pos = $(obj).position();

	// workarounds for Opera and Webkit bugs
	pos.top = Math.max(0, pos.top);
	pos.left = Math.max(0, pos.left);

	rcmail.env.indicator_width = width;
	rcmail.env.indicator_height = height;

	// overlimit
	if (quota_width > width) {
	quota_width = width;
	quota = 100;
	}

	if (data.title)
	data.title = rcmail.get_label('quota') + ': ' + data.title;

	// main div
	var main = $('<div>');
	main.css({position: 'absolute', top: pos.top, left: pos.left,
	width: width + 'px', height: height + 'px', zIndex: 100, lineHeight: height + 'px'})
	.attr('title', data.title).addClass('quota_text').html(quota + '%');
	// used bar
	var bar1 = $('<div>');
	bar1.css({position: 'absolute', top: pos.top + 1, left: pos.left + 1,
	width: quota_width + 'px', height: height + 'px', zIndex: 99});
	// background
	var bar2 = $('<div>');
	bar2.css({position: 'absolute', top: pos.top + 1, left: pos.left + 1,
	width: width + 'px', height: height + 'px', zIndex: 98})
	.addClass('quota_bg');

	if (quota >= limit_high) {
	main.addClass(' quota_text_high');
	bar1.addClass('quota_high');
	}
	else if(quota >= limit_mid) {
	main.addClass(' quota_text_mid');
	bar1.addClass('quota_mid');
	}
	else {
	main.addClass(' quota_text_low');
	bar1.addClass('quota_low');
	}

	// replace quota image
	$(obj).html('').append(bar1).append(bar2).append(main);
	// update #quotaimg title
	$('#quotaimg').attr('title', data.title);
	};

	function attachment_menu_append(item)
	{
	$(item).append(
	$('<a class="drop"></a>').on('click keypress', function(e) {
	if (e.type != 'keypress' \|\| e.which == 13) {
	rcmail_ui.show_attachmentmenu(this, e);
	return false;
	}
	})
	);
	};

	// Optional parameters used by TinyMCE
	var rcmail_editor_settings = {};

	var rcmail_ui;

	function rcube_init_mail_ui()
	{
	rcmail_ui = new rcube_mail_ui();

	$(document.body).mouseup(function(e) { rcmail_ui.body_mouseup(e); })
	.mousedown(function(e) { rcmail_ui.body_keydown(e); });

	rcmail.addEventListener('init', function() {
	if (rcmail.env.quota_content)
	update_quota(rcmail.env.quota_content);
	rcmail.addEventListener('setquota', update_quota);

	rcube_webmail.set_iframe_events({mouseup: function(e) { return rcmail_ui.body_mouseup(e); }});

	if (rcmail.env.task == 'mail') {
	rcmail.addEventListener('enable-command', 'enable_command', rcmail_ui)
	.addEventListener('menu-open', 'menu_open', rcmail_ui)
	.addEventListener('aftersend-attachment', 'uploadmenu', rcmail_ui)
	.addEventListener('aftertoggle-editor', 'resize_compose_body_ev', rcmail_ui)
	.addEventListener('afterbounce', function(){ rcmail_ui.show_popup('forwardmenu', false); })
	.gui_object('dragmenu', 'dragmenu');

	if (rcmail.gui_objects.mailboxlist) {
	rcmail.treelist.addEventListener('expand', rcube_render_mailboxlist);
	rcmail.addEventListener('responseaftermark', rcube_render_mailboxlist)
	.addEventListener('responseaftergetunread', rcube_render_mailboxlist)
	.addEventListener('responseaftercheck-recent', rcube_render_mailboxlist)
	.addEventListener('responseafterrefresh', rcube_render_mailboxlist)
	.addEventListener('afterimport-messages', function(){ rcmail_ui.show_popup('uploadform', false); });
	}

	rcmail.init_pagejumper('#pagejumper');

	// fix message list header on window resize (#1490213)
	if (bw.ie && rcmail.message_list)
	$(window).resize(function() {
	setTimeout(function() { rcmail.message_list.resize(); }, 10);
	});

	if (rcmail.env.action == 'list' \|\| !rcmail.env.action) {
	rcmail.addEventListener('layout-change', 'set_layout', rcmail_ui);
	rcmail_ui.set_layout();
	}
	else if (rcmail.env.action == 'compose') {
	rcmail_ui.init_compose_form();
	rcmail.addEventListener('compose-encrypted', function(e) {
	$("a.button.encrypt")[(e.active ? 'addClass' : 'removeClass')]('selected');
	$("select[name='editorSelector']").prop('disabled', e.active);
	$('a.button.attach, a.button.responses, a.button.attach, #uploadmenulink')[(e.active ? 'addClass' : 'removeClass')]('buttonPas disabled');
	$('#responseslist a.insertresponse')[(e.active ? 'removeClass' : 'addClass')]('active');
	});
	rcmail.addEventListener('fileappended', function(e) {
	if (e.attachment.complete)
	attachment_menu_append(e.item);
	});

	// add menu link for each attachment
	$('#attachmentslist > li').each(function() {
	attachment_menu_append(this);
	});
	}
	else if (rcmail.env.action == 'show' \|\| rcmail.env.action == 'preview') {
	// add menu link for each attachment
	$('#attachment-list > li[id^="attach"]').each(function() {
	attachment_menu_append(this);
	});

	$(window).resize(function() {
	if (!$('#attachment-list > li[id^="attach"]').length)
	$('#attachment-list').hide();

	var mvlpe = $('#messagebody.mailvelope');
	if (mvlpe.length) {
	var content = $('#messageframe'),
	h = (content.length ? content.height() + content.offset().top - 25 : $(this).height()) - mvlpe.offset().top - 20;
	mvlpe.height(h);
	}
	});
	}
	}
	else if (rcmail.env.task == 'addressbook') {
	rcmail.addEventListener('afterupload-photo', function(){ rcmail_ui.show_popup('uploadform', false); })
	.gui_object('dragmenu', 'dragmenu');
	}
	else if (rcmail.env.task == 'settings') {
	if (rcmail.env.action == 'folders') {
	rcmail_ui.folder_search_init($('#folder-manager'));
	}

	$('#mainscreen > #prefs-title').detach().prependTo($('#mainscreen > .box'));
	}
	});
	}

	diff --git a/skins/elastic/ui.js b/skins/elastic/ui.js
	index fb3c46f70..c643588a8 100644
	--- a/skins/elastic/ui.js
	+++ b/skins/elastic/ui.js
	@@ -1,3973 +1,3973 @@
	/**
	* Roundcube webmail functions for the Elastic skin
	*
	* Copyright (c) 2017-2018, The Roundcube Dev Team
	*
	* The contents are subject to the Creative Commons Attribution-ShareAlike
	* License. It is allowed to copy, distribute, transmit and to adapt the work
	* by keeping credits to the original autors in the README file.
	* See http://creativecommons.org/licenses/by-sa/3.0/ for details.
	*
	* @license magnet:?xt=urn:btih:90dc5c0be029de84e523b9b3922520e79e0e6f08&dn=cc0.txt CC0-1.0
	*/

	"use strict";

	function rcube_elastic_ui()
	{
	var ref = this,
	mode = 'normal', // one of: large, normal, small, phone
	touch = false,
	ios = false,
	popups_close_lock,
	is_framed = rcmail.is_framed(),
	env = {
	config: {
	standard_windows: rcmail.env.standard_windows,
	message_extwin: rcmail.env.message_extwin,
	compose_extwin: rcmail.env.compose_extwin,
	help_open_extwin: rcmail.env.help_open_extwin
	},
	checkboxes: 0,
	small_screen_config: {
	standard_windows: true,
	message_extwin: false,
	compose_extwin: false,
	help_open_extwin: false
	}
	},
	menus = {},
	content_buttons = [],
	frame_buttons = [],
	layout = {
	menu: $('#layout > .menu'),
	sidebar: $('#layout > .sidebar'),
	list: $('#layout > .list'),
	content: $('#layout > .content'),
	},
	buttons = {
	menu: $('a.menu-button'),
	back_sidebar: $('a.back-sidebar-button'),
	back_list: $('a.back-list-button'),
	back_content: $('a.back-content-button'),
	};


	// Public methods
	this.register_content_buttons = register_content_buttons;
	this.menu_hide = menu_hide;
	this.menu_toggle = menu_toggle;
	this.menu_destroy = menu_destroy;
	this.popup_init = popup_init;
	this.about_dialog = about_dialog;
	this.headers_dialog = headers_dialog;
	this.import_dialog = import_dialog;
	this.headers_show = headers_show;
	this.spellmenu = spellmenu;
	this.searchmenu = searchmenu;
	this.headersmenu = headersmenu;
	this.header_reset = header_reset;
	this.compose_status = compose_status;
	this.attachmentmenu = attachmentmenu;
	this.mailtomenu = mailtomenu;
	this.recipient_selector = recipient_selector;
	this.show_list = show_list;
	this.show_sidebar = show_sidebar;
	this.smart_field_init = smart_field_init;
	this.smart_field_reset = smart_field_reset;
	this.form_errors = form_errors;
	this.switch_nav_list = switch_nav_list;
	this.searchbar_init = searchbar_init;
	this.pretty_checkbox = pretty_checkbox;
	this.pretty_select = pretty_select;
	this.datepicker_init = datepicker_init;
	this.bootstrap_style = bootstrap_style;


	// Detect screen size/mode
	screen_mode();

	// Initialize layout
	layout_init();

	// Convert some elements to Bootstrap style
	bootstrap_style();

	// Initialize responsive toolbars (have to be before popups init)
	toolbar_init();

	// Initialize content frame and list handlers
	content_frame_init();

	// Initialize menu dropdowns
	dropdowns_init();

	// Setup various UI elements
	setup();

	// Update layout after initialization
	resize();


	/**
	* Setup procedure
	*/
	function setup()
	{
	var title, form, content_buttons = [];

	// Intercept jQuery-UI dialogs...
	$.ui && $.widget('ui.dialog', $.ui.dialog, {
	open: function() {
	// .. to unify min width for iframe'd dialogs
	if ($(this.element).is('.iframe')) {
	this.options.width = Math.max(576, this.options.width);
	}
	this._super();
	// ... to re-style them on dialog open
	dialog_open(this);
	return this;
	},
	close: function() {
	this._super();
	// ... to close custom select dropdowns on dialog close
	$('.select-menu:visible').remove();
	return this;
	}
	});

	// menu/sidebar/list button
	buttons.menu.on('click', function() { app_menu(true); return false; });
	buttons.back_sidebar.on('click', function() { show_sidebar(); return false; });
	buttons.back_list.on('click', function() { show_list(); return false; });
	buttons.back_content.on('click', function() { show_content(true); return false; });

	// Initialize search forms
	$('.searchbar').each(function() { searchbar_init(this); });

	// Set content frame title in parent window (exclude ext-windows and dialog frames)
	if (is_framed && !rcmail.env.extwin && !parent.$('.ui-dialog:visible').length) {
	- if (title = $('h1.voice:first').text()) {
	+ if (title = $('h1.voice').first().text()) {
	parent.$('#layout > .content > .header > .header-title:not(.constant)').text(title);
	}
	}
	else if (!is_framed) {
	- title = $('.boxtitle:first', layout.content).detach().text();
	+ title = $('.boxtitle', layout.content).first().detach().text();

	if (!title) {
	- title = $('h1.voice:first').text();
	+ title = $('h1.voice').first().text();
	}

	if (title) {
	$('.header > .header-title', layout.content).text(title);
	}
	}

	// Add content frame toolbar in the footer, for content buttons and navigation
	if (!is_framed && layout.content.length && !$(layout.content).is('.no-navbar')
	&& !$(layout.content).children('.frame-content').length
	) {
	env.frame_nav = $('<div class="footer toolbar content-frame-navigation hide-nav-buttons">')
	.append($('<a class="button prev">')
	.append($('<span class="inner"></span>').text(rcmail.gettext('previous'))))
	.append($('<span class="buttons">'))
	.append($('<a class="button next">')
	.append($('<span class="inner"></span>').text(rcmail.gettext('next'))))
	.appendTo(layout.content);
	}

	// Move some buttons to the frame footer toolbar
	$('a[data-content-button]').each(function() {
	content_buttons.push(create_cloned_button($(this)));
	});

	// Move form buttons from the content frame into the frame footer (on parent window)
	$('.formbuttons').filter(function() { return !$(this).parent('.searchoptions').length; }).children().each(function() {
	var target = $(this);

	// skip non-content buttons
	if (!is_framed && !target.parents('.content').length) {
	return;
	}

	if (target.is('.cancel')) {
	target.addClass('hidden');
	return;
	}

	content_buttons.push(create_cloned_button(target));
	});

	(is_framed ? parent.UI : ref).register_content_buttons(content_buttons);

	// Mail compose features
	if (form = rcmail.gui_objects.messageform) {
	form = $('form[name="' + form + '"]');
	// Show input elements with non-empty value
	// These event handlers need to be registered before rcmail 'init' event
	$('#_cc, #_bcc, #_replyto, #_followupto', $('.compose-headers')).each(function() {
	$(this).on('change', function() {
	$('#compose' + $(this).attr('id'))[this.value ? 'removeClass' : 'addClass']('hidden');
	});
	});

	// We put compose options outside of the main form
	// Because IE/Edge (<16) does not support 'form' attribute we'll copy
	// inputs into the main form as hidden fields
	// TODO: Consider doing this for IE/Edge only, just set the 'form' attribute on others
	$('#compose-options').find('textarea,input,select').each(function() {
	var hidden = $('<input>')
	.attr({type: 'hidden', name: $(this).attr('name')})
	.appendTo(form);

	$(this).attr('tabindex', 2)
	.on('change', function() {
	hidden.val(this.type != 'checkbox' \|\| this.checked ? $(this).val() : '');
	})
	.change();
	});
	}

	// Use smart recipient inputs
	// This have to be after mail compose feature above
	$('[data-recipient-input]').each(function() { recipient_input(this); });

	// Image upload widget
	$('.image-upload').each(function() { image_upload_input(this); });

	// Add HTML/Plain tabs (switch) on top of textarea with TinyMCE editor
	$('textarea[data-html-editor]').each(function() { html_editor_init(this); });

	$('#dragmessage-menu,#dragcontact-menu').each(function() {
	rcmail.gui_object('dragmenu', this.id);
	});

	// Taskmenu items added by plugins do not use elastic classes (e.g help plugin)
	// it's for larry skin compat. We'll assign 'button', 'selected' and icon-specific class.
	$('#taskmenu > a').each(function() {
	if (/button-([a-z]+)/.test(this.className)) {
	var data, name = RegExp.$1,
	button = find_button(this.id);

	if (button && (data = button.data)) {
	if (data.sel) {
	data.sel += ' button ' + name;
	data.sel = data.sel.replace('button-selected', 'selected');
	}

	if (data.act) {
	data.act += ' button ' + name;
	}

	rcmail.buttons[button.command][button.index] = data;
	rcmail.init_button(button.command, data);
	}

	$(this).addClass('button ' + name);
	$('.button-inner', this).addClass('inner');
	}

	$(this).on('mouseover', function() { rcube_webmail.long_subject_title(this, 0, $('span.inner', this)); });
	});

	// Some plugins use 'listbubtton' class, we'll replace it with 'button'
	$('.listbutton').each(function() {
	var button = find_button(this.id);

	$(this).addClass('button').removeClass('listbutton');

	if (button.data.sel) {
	button.data.sel = button.data.sel.replace('listbutton', 'button');
	}
	if (button.data.act) {
	button.data.act = button.data.act.replace('listbutton', 'button');
	}

	rcmail.buttons[button.command][button.index] = button.data;
	rcmail.init_button(button.command, button.data);
	});

	// buttons that should be hidden on small screen devices
	$('[data-hidden]').each(function() {
	var m, v = $(this).data('hidden'),
	parent = $(this).parent('li'),
	re = /(large\|big\|small\|phone\|lbs)/g;

	while (m = re.exec(v)) {
	$(parent.length ? parent : this).addClass('hidden-' + m[1]);
	}
	});

	// Modify normal checkboxes on lists so they are different
	// than those used for row selection, i.e. use icons
	$('[data-list]').each(function() {
	$('input[type=checkbox]', this).each(function() { pretty_checkbox(this); });
	});

	// Assign .formcontainer class to the iframe body, when it
	// contains .formcontent and .formbuttons.
	if (is_framed) {
	$('.formcontent').each(function() {
	if ($(this).next('.formbuttons').length) {
	$(this).parent().addClass('formcontainer');
	}
	});
	}

	// move "Download all attachments" button into a better location
	$('#attachment-list + a.zipdownload').appendTo('.header-links');

	if (ios = $('html').is('.ipad,.iphone')) {
	$('.iframe-wrapper, .scroller').addClass('ios-scroll');
	}

	if ($('html').filter('.ipad,.iphone,.webkit.mobile,.webkit.tablet').addClass('webkit-scroller').length) {
	$(layout.menu).addClass('webkit-scroller');
	}

	// Set .notree class on treelist widget update
	$('.treelist').each(function() {
	var list = this, callback = function() {
	$(list)[$('.treetoggle', list).length > 0 ? 'removeClass' : 'addClass']('notree');
	};

	if (window.MutationObserver) {
	(new MutationObserver(callback)).observe(list, {childList: true, subtree: true});
	}
	callback();

	// Add title with full folder name on hover
	// TODO: This should be done in another way, so if an entry is
	// added after page load it also works there.
	$('li.mailbox > a').on('mouseover', function() { rcube_webmail.long_subject_title_ex(this); });
	});

	// Store default logo path if not already set
	if (!$('#logo').data('src-default')) {
	$('#logo').data('src-default', $('#logo').attr('src'));
	}
	};

	/**
	* Moves form buttons into the content frame actions toolbar (for mobile)
	*/
	function register_content_buttons(buttons)
	{
	// we need these buttons really only in phone mode
	if (/mode == 'phone' && / env.frame_nav && buttons && buttons.length) {
	var toolbar = env.frame_nav.children('.buttons');

	content_buttons = [];
	$.each(buttons, function() {
	if (this.data('target')) {
	content_buttons.push(this.data('target'));
	}
	});

	toolbar.html('').append(buttons);
	}
	};

	/**
	* Registers cloned button
	*/
	function register_cloned_button(old_id, new_id, active_class)
	{
	var button = find_button(old_id);
	if (button) {
	rcmail.register_button(button.command, new_id, button.data.type, active_class, button.data.sel);
	}
	};

	/**
	* Create a button clone for use in toolbar
	*/
	function create_cloned_button(target, menu_button, add_class, always_active)
	{
	var popup, click = true,
	button = $('<a>'),
	target_id = target.attr('id') \|\| new Date().getTime(),
	button_id = target_id + '-clone',
	btn_class = target[0].className + (add_class ? ' ' + add_class : '');

	if (!menu_button) {
	btn_class = $.trim(btn_class.replace('btn-primary', 'primary').replace(/(btn[a-z-]*\|button\|disabled)/g, ''))
	btn_class += ' button' + (!always_active ? ' disabled' : '');
	}
	else if (popup = target.data('popup')) {
	button.data({popup: popup, 'toggle-button': target.data('toggle-button')});
	popup_init(button[0]);
	click = false;
	rcmail.register_menu_button(button[0], popup);
	}

	button.attr({id: button_id, href: '#', 'class': btn_class})
	.append($('<span class="inner">').text(target.text()));

	if (click) {
	button.on('click', function(e) { target.click(); });
	}

	if (is_framed && !menu_button) {
	button.data('target', target);
	frame_buttons.push($.extend({button_id: button_id}, find_button(target[0].id)));
	}
	else {
	// Register the button to get active state updates
	register_cloned_button(target_id, button_id, btn_class.replace(' disabled', ''));
	}

	return button;
	};

	/**
	* Finds an rcmail button
	*/
	function find_button(id)
	{
	var i, button, command;

	for (command in rcmail.buttons) {
	for (i = 0; i < rcmail.buttons[command].length; i++) {
	button = rcmail.buttons[command][i];
	if (button.id == id) {
	return {
	command: command,
	index: i,
	data: button
	};
	}
	}
	}
	};

	/**
	* Setup environment
	*/
	function layout_init()
	{
	// Select current layout element
	env.last_selected = $('#layout > div.selected')[0];
	if (!env.last_selected && layout.content.length) {
	$.each(['sidebar', 'list', 'content'], function() {
	if (layout[this].length) {
	env.last_selected = layout[this][0];
	layout[this].addClass('selected');
	return false;
	}
	});
	}

	// Register resize handler
	$(window).on('resize', function() {
	clearTimeout(env.resize_timeout);
	env.resize_timeout = setTimeout(function() { resize(); }, 25);
	});

	// Enable rcmail.open_window intercepting
	env.open_window = rcmail.open_window;
	rcmail.open_window = window_open;

	rcmail
	.addEventListener('message', message_displayed)
	.addEventListener('menu-open', menu_toggle)
	.addEventListener('menu-close', menu_toggle)
	.addEventListener('editor-init', tinymce_init)
	.addEventListener('autocomplete_create', rcmail_popup_init)
	.addEventListener('googiespell_create', rcmail_popup_init)
	.addEventListener('setquota', update_quota)
	.addEventListener('enable-command', enable_command_handler)
	.addEventListener('init', init);

	// Add styling for TinyMCE editor popups
	// We need to use MutationObserver, as TinyMCE does not provide any events for this
	if (window.MutationObserver && window.tinymce) {
	var callback = function(list) {
	$.each(list, function() {
	$.each(this.addedNodes, function() {
	tinymce_style(this);
	});
	});
	};

	(new MutationObserver(callback)).observe(document.body, {childList: true});
	}
	};

	/**
	* rcmail 'init' event handler
	*/
	function init()
	{
	// Additional functionality on list widgets
	$('[data-list]').filter('ul,table').each(function() {
	var button,
	table = $(this),
	list = table.data('list');

	if (rcmail[list] && rcmail[list].multiselect) {
	var repl, button,
	parent = table.parents('.sidebar,.list,.content').last(),
	header = parent.find('.header'),
	toolbar = header.find('ul');

	if (!toolbar.length) {
	toolbar = header;
	}
	else if (button = toolbar.find('a.button.select').data('toggle-button')) {
	button = $('#' + button);
	}

	// Enable checkbox selection on list widgets
	rcmail[list].enable_checkbox_selection();

	// Add Select button to the list navigation bar
	if (!button) {
	button = $('<a>').attr({'class': 'button select disabled', role: 'button', title: rcmail.gettext('select')})
	.on('click', function() { if ($(this).is('.active')) table.toggleClass('withselection'); })
	.append($('<span class="inner">').text(rcmail.gettext('select')));

	if (toolbar.is('.toolbar') \|\| toolbar.is('.toolbarmenu')) {
	button.prependTo(toolbar).wrap('<li role="menuitem">');

	// Add a button to the content toolbar menu too
	if (layout.content) {
	var button2 = create_cloned_button(button, true, 'hidden-big hidden-large');
	$('<li role="menuitem">').append(button2).appendTo('#toolbar-menu');
	button = button.add(button2);
	}
	}
	else {
	if (repl = table.data('list-select-replace')) {
	$(repl).replaceWith(button);
	}
	else {
	button.appendTo(toolbar).addClass('icon');
	if (!parent.is('.sidebar')) {
	button.addClass('toolbar-button');
	}
	}
	}
	}

	// Update Select button state on list update
	rcmail.addEventListener('listupdate', function(prop) {
	if (prop.list && prop.list == rcmail[list]) {
	if (prop.rowcount) {
	button.addClass('active').removeClass('disabled').attr('tabindex', 0);
	}
	else {
	button.removeClass('active').addClass('disabled').attr('tabindex', -1);
	}
	}
	});
	}

	// https://github.com/roundcube/elastic/issues/45
	// Draggable blocks scrolling on touch devices, we'll disable it there
	if (touch && rcmail[list]) {
	if (typeof rcmail[list].draggable == 'function') {
	rcmail[list].draggable('destroy');
	}
	else if (typeof rcmail[list].draggable == 'boolean') {
	rcmail[list].draggable = false;
	}
	}
	});

	// Display "List is empty..." on the list
	if (window.MutationObserver) {
	$('[data-label-msg]').filter('ul,table').each(function() {
	var fn, observer, callback,
	info = $('<div class="listing-info hidden">').insertAfter(this),
	table = $(this),

	fn = function() {
	var ext, command,
	msg = table.data('label-msg'),
	list = table.is('ul') ? table : table.children('tbody');

	if (!rcmail.env.search_request && !rcmail.env.qsearch
	&& msg && !list.children(':visible').length
	) {
	ext = table.data('label-ext');
	command = table.data('create-command');

	if (ext && (!command \|\| rcmail.commands[command])) {
	msg += ' ' + ext;
	}

	info.text(msg).removeClass('hidden');
	return;
	}

	info.addClass('hidden');
	};

	callback = function() {
	// wait until the UI stops loading and the list is visible
	if (rcmail.busy \|\| !table.is(':visible')) {
	return setTimeout(callback, 250);
	}

	clearTimeout(env.list_timer);
	env.list_timer = setTimeout(fn, 50);
	};

	// show/hide the message when something changes on the list
	observer = new MutationObserver(callback);
	observer.observe(table[0], {childList: true, subtree: true, attributes: true, attributeFilter: ['style']});

	// initialize the message
	callback();
	});
	}

	// Create floating action button(s)
	if ((layout.list.length \|\| layout.content.length) && is_mobile()) {
	var fabuttons = [];

	$('[data-fab]').each(function() {
	var button = $(this),
	task = button.data('fab-task') \|\| '*',
	action = button.data('fab-action') \|\| '*';

	if ((task == '*' \|\| task == rcmail.task)
	&& (action == '*' \|\| action == rcmail.env.action \|\| (action == 'none' && !rcmail.env.action))
	) {
	fabuttons.push(create_cloned_button(button, false, false, true));
	}
	});

	if (fabuttons.length) {
	$('<div class="floating-action-buttons">').append(fabuttons)
	.appendTo(layout.list.length ? layout.list : layout.content);
	}
	}

	// Add menu link for each attachment
	if (rcmail.env.action != 'print') {
	$('#attachment-list > li').each(function() {
	attachmentmenu_append(this);
	});
	}

	var phone_confirmation = function(label) {
	if (mode == 'phone') {
	rcmail.display_message(rcmail.gettext(label), 'confirmation');
	}
	};

	rcmail.addEventListener('fileappended', function(e) {
	if (e.attachment.complete) {
	attachmentmenu_append(e.item);
	if (e.attachment.mimetype == 'text/vcard' && rcmail.commands['attach-vcard']) {
	phone_confirmation('vcard_attachments.vcardattached');
	}
	}
	})
	.addEventListener('managesieve.insertrow', function(o) { bootstrap_style(o.obj); })
	.addEventListener('add-recipient', function() { phone_confirmation('recipientsadded'); });

	rcmail.init_pagejumper('.pagenav > input');

	if (rcmail.task == 'mail') {
	if (rcmail.env.action == 'compose') {
	// In compose window we do not provide "Back' button, instead
	// we modify the Mail button in the task menu to act like it (i.e. calls 'list' command)
	if (!rcmail.env.extwin) {
	$('a.button.mail', layout.menu).attr('onclick', "return rcmail.command('list','',this,event)");
	}

	rcmail.addEventListener('compose-encrypted', function(e) {
	$("a.mode-html, button.attach").prop('disabled', e.active);
	$('a.button.attach, a.button.responses')[e.active ? 'addClass' : 'removeClass']('disabled');
	});

	$('.sidebar > .footer:not(.pagenav) > a.button').click(function() {
	if ($(this).is('.disabled')) {
	rcmail.display_message(rcmail.gettext('nocontactselected'), 'warning');
	}
	});

	// Update compose status bar on attachments list update
	if (window.MutationObserver) {
	var observer, list = $('#attachment-list'),
	status_callback = function() { compose_status('attach', list.children().length > 0); };

	observer = new MutationObserver(status_callback);
	observer.observe(list[0], {childList: true});
	status_callback();
	}
	}

	// Append contact menu to all mailto: links
	if (rcmail.env.action == 'preview' \|\| rcmail.env.action == 'show') {
	$('a').filter('[href^="mailto:"]').each(function() {
	mailtomenu_append(this);
	});
	}
	}
	else if (rcmail.task == 'settings') {
	rcmail.addEventListener('identity-encryption-show', function(p) {
	bootstrap_style(p.container);
	});
	rcmail.addEventListener('identity-encryption-update', function(p) {
	bootstrap_style(p.container);
	});
	}

	rcmail.set_env({
	thread_padding: '1.5rem',
	// increase popup windows, so they do not switch to tablet mode
	popup_width_small: 1025,
	popup_width: 1200
	});

	// Update layout after initialization (again)
	// In devel mode we have to wait until all styles are applied by less
	if (rcmail.env.devel_mode && window.less) {
	less.pageLoadFinished.then(function() {
	resize();
	});
	}
	else {
	resize();
	}

	// Add date format placeholder to datepicker inputs
	var func, format = rcmail.env.date_format_localized;
	if (format) {
	func = function(input) {
	$(input).filter('.datepicker').attr('placeholder', format);
	// also make selects pretty
	$(input).parent().find('select').each(function() { pretty_select(this); });
	};

	$('input.datepicker').each(function() { func(this); });
	rcmail.addEventListener('insert-edit-field', func);
	}
	};

	/**
	* Apply bootstrap classes to html elements
	*/
	function bootstrap_style(context)
	{
	if (!context) {
	context = document;
	}

	// Buttons
	$('input.button,button', context).not('.btn').addClass('btn').not('.btn-primary,.primary,.mainaction').addClass('btn-secondary');
	$('input.button.mainaction,button.primary,button.mainaction', context).addClass('btn-primary');
	$('button.btn.delete,button.btn.discard', context).addClass('btn-danger');

	$.each(['warning', 'error', 'information', 'confirmation'], function() {
	var type = this;
	$('.box' + type + ':not(.ui.alert)', context).each(function() {
	alert_style(this, type, true);
	});
	});

	// Convert structure of single dialogs (one input or just an image),
	// e.g. group create, attachment rename where we use <label>Label<input></label>
	if (context != document && $('.popup', context).children().length == 1) {
	var content = $('.popup', context).children().first();
	if (content.is('img')) {
	$('.popup', context).addClass('justified');
	}
	else if (content.is('label')) {
	var input = content.find('input').detach(),
	label = content.detach(),
	id = input.attr('id');

	if (!id) {
	input.attr('id', id = 'dialog-input-elastic');
	}

	$('.popup', context).addClass('formcontent').append(
	$('<div class="form-group row">')
	.append(label.attr('for', id).addClass('col-sm-2 col-form-label'))
	.append($('<div class="col-sm-10">').append(input))
	);

	input.focus();
	}
	}

	// Forms
	var supported_controls = 'input:not(.button,.no-bs,[type=button],[type=radio],[type=checkbox]),textarea';
	$(supported_controls, $('.propform', context)).addClass('form-control');
	$('[type=checkbox]', $('.propform', context)).addClass('form-check-input');

	// Note: On selects we add form-control to get consistent focus
	// and to not have to create separate rules for selects and inputs
	$('select', context).addClass('form-control custom-select');

	if (context != document) {
	$(supported_controls, context).addClass('form-control');
	}

	$('table.propform', context).each(function() {
	var text_rows = 0, form_rows = 0;

	$(this).find('> tbody > tr, > tr').each(function() {
	var first, last, row = $(this),
	row_classes = ['form-group', 'row'],
	cells = row.children('td');

	if (cells.length == 2) {
	first = cells.first();
	last = cells.last();

	$('label', first).addClass('col-form-label');
	first.addClass('col-sm-4');
	last.addClass('col-sm-8');

	if (last.find('[type=checkbox]').length == 1 && !last.find('.proplist').length) {
	row_classes.push('form-check');

	if (last.find('a').length) {
	row_classes.push('with-link');
	}

	form_rows++;
	}
	else if (!last.find('input:not([type=hidden]),textarea,radio,select').length) {
	last.addClass('form-control-plaintext');
	text_rows++;
	}
	else {
	form_rows++;
	}

	// style some multi-input fields
	if (last.children('.datepicker') && last.children('input').length == 2) {
	last.addClass('datetime');
	}
	}
	else if (cells.length == 1) {
	cells.css('width', '100%');
	}

	row.addClass(row_classes.join(' '));
	});

	if (text_rows > form_rows) {
	$(this).addClass('text-only');
	}
	});

	// Special input + anything entry
	$('td.input-group', context).each(function() {
	- $(this).children(':not(:first)').addClass('input-group-append');
	+ $(this).children().slice(1).addClass('input-group-append');
	});

	// Other forms, e.g. Contact advanced search
	$('fieldset.propform:not(.groupped) div.row', context).each(function() {
	var has_input = $('input:not([type=hidden]),select,textarea', this).length > 0;

	if (has_input) {
	$(supported_controls, this).addClass('form-control');
	}

	$(this).children().last().addClass('col-sm-8' + (!has_input ? ' form-control-plaintext' : ''));
	$(this).children().first().addClass('col-sm-4 col-form-label');
	$(this).addClass('form-group');
	});

	// Contact info/edit form
	$('fieldset.propform.groupped fieldset', context).each(function() {
	$('.row', this).each(function() {
	var label, first,
	has_input = $('input,select,textarea', this).length > 0,
	items = $(this).children();

	if (has_input) {
	$(supported_controls, this).addClass('form-control');
	}

	if (items.length < 2) {
	return;
	}

	first = items.first();
	if (first.is('select')) {
	first.addClass('input-group-prepend');
	}
	else {
	first.wrap('<span class="input-group-prepend">').addClass('input-group-text');
	}

	if (!has_input) {
	items.last().addClass('form-control-plaintext');
	}

	$('.content', this).addClass('input-group-prepend input-group-append input-group-text');
	$('a.deletebutton', this).addClass('input-group-text icon delete').wrap('<span class="input-group-append">');
	$(this).addClass('input-group');
	});
	});

	// Advanced options form
	$('fieldset.advanced', context).each(function() {
	var table = $(this).children('.propform').first();
	table.wrap($('<div>').addClass('collapse'));
	$(this).children('legend').first().addClass('closed').on('click', function() {
	table.parent().collapse('toggle');
	$(this).toggleClass('closed');
	});
	});

	// Other forms, e.g. Insert response
	$('.propform > .prop.block:not(.row)', context).each(function() {
	$(this).addClass('form-group row').each(function() {
	$('label', this).addClass('col-form-label').wrap($('<div class="col-sm-4">'));
	$('input,select,textarea', this).wrap($('<div class="col-sm-8">'));
	$(supported_controls, this).addClass('form-control');
	});
	});

	$('td.rowbuttons > a', context).addClass('btn');

	// Testing Bootstrap Tabs on contact info/edit page
	// Tabs do not scale nicely on very small screen, so can be used
	// only with small number of tabs with short text labels
	$('form.tabbed,div.tabbed', context).each(function(idx, item) {
	var tabs = [], nav = $('<ul>').attr({'class': 'nav nav-tabs', role: 'tablist'});

	$(this).addClass('tab-content').children('fieldset').each(function(i, fieldset) {
	var tab, id = fieldset.id \|\| ('tab' + idx + '-' + i),
	tab_class = $(fieldset).data('navlink-class');

	$(fieldset).addClass('tab-pane').attr({id: id, role: 'tabpanel'});

	tab = $('<li>').addClass('nav-item').append(
	$('<a>').addClass('nav-link' + (tab_class ? ' ' + tab_class : ''))
	.attr({role: 'tab', 'href': '#' + id})
	- .text($('legend:first', fieldset).text())
	+ .text($('legend', fieldset).first().text())
	.click(function(e) {
	$(this).tab('show');
	// Because we return false we have to close popups
	popups_close(e);
	// Returning false here prevents from strange scrolling issue
	// when the form is in an iframe, e.g. contact edit form
	return false;
	})
	);

	- $('legend:first', fieldset).hide();
	+ $('legend', fieldset).first().hide();
	tabs.push(tab);
	});

	// create the navigation bar
	nav.append(tabs).insertBefore(item);
	// activate the first tab
	- $('a.nav-link:first', nav).click();
	+ $('a.nav-link', nav).first().click();
	});

	$('input[type=file]:not(.custom-file-input)', context).each(function() {
	var label_text = rcmail.gettext('choosefile' + (this.multiple ? 's' : '')),
	label = $('<label>').attr({'class': 'custom-file-label',
	'data-browse': rcmail.gettext('browse')}).text(label_text);

	$(this).addClass('custom-file-input').wrap('<div class="custom-file">');
	$(this).on('change', function() {
	var text = label_text;
	if (this.files.length) {
	text = this.files[0].name;
	if (this.files.length > 1) {
	text += ', ...';
	}
	}

	// Note: We don't use label variable to allow cloning of the input
	$(this).next().text(text);
	})
	.parent().append(label);
	});

	// Make tables pretier
	$('table:not(.table,.compact-table,.propform,.listing,.ui-datepicker-calendar)', context)
	.filter(function() {
	// exclude direct propform children and external content
	return !$(this).parent().is('.propform')
	&& !$(this).parents('.message-htmlpart,.message-partheaders,.boxinformation,.raw-tables').length;
	})
	.each(function() {
	// TODO: Consider implementing automatic setting of table-responsive on window resize
	var table = $(this).addClass('table');
	table.parent().addClass('table-responsive-sm');
	table.find('thead').addClass('thead-default');
	});

	// The same for some other checkboxes
	// We do this here, not in setup() because we want to cover dialogs
	$('input.pretty-checkbox, .propform input[type=checkbox], .form-check input, .popupmenu.form input[type=checkbox], .toolbarmenu input[type=checkbox]', context)
	.each(function() { pretty_checkbox(this); });

	// Also when we add action-row of the form, e.g. Managesieve plugin adds them after the page is ready
	if ($(context).is('.actionrow')) {
	$('input[type=checkbox]', context).each(function() { pretty_checkbox(this); });
	}

	// Input-group combo is an element with a select field on the left
	// and input(s) on right, and where the whole right side can be hidden
	// depending on the select position. This code fixes border radius on select
	- $('.input-group-combo > select:first', context).on('change', function() {
	+ $('.input-group-combo > select', context).first().on('change', function() {
	var select = $(this),
	fn = function() {
	select[select.next().is(':visible') ? 'removeClass' : 'addClass']('alone');
	};

	setTimeout(fn, 50);
	setTimeout(fn, 2000); // for devel mode
	}).trigger('change');

	// Make message-objects alerts pretty (the same as UI alerts)
	$('#message-objects', context).children(':not(.ui.alert)').add('.part-notice').each(function() {
	// message objects with notice class are really warnings
	var cl = $(this).removeClass('notice part-notice').attr('class').split(/\s/)[0] \|\| 'warning';
	alert_style(this, cl);
	$(this).addClass('box' + cl);
	$('a', this).addClass('btn btn-primary btn-sm');
	});

	// Form validation errors (managesieve plugin)
	$('.error', context).addClass('is-invalid');

	// Make logon form prettier
	if (rcmail.env.task == 'login' && context == document) {
	$('#rcmloginsubmit').addClass('btn-lg text-uppercase w-100');
	$('#login-form table tr').each(function() {
	var input = $('input,select', this),
	label = $('label', this),
	icon_name = input.data('icon'),
	icon = $('<i>').attr('class', 'input-group-text icon ' + input.attr('name').replace('_', ''));

	if (icon_name) {
	icon.addClass(icon_name);
	}

	$(this).addClass('form-group row');
	label.parent().css('display', 'none');
	input.addClass(input.is('select') ? 'custom-select' : 'form-control')
	.attr('placeholder', label.text())
	.before($('<span class="input-group-prepend">').append(icon))
	.parent().addClass('input-group input-group-lg');
	});
	}

	$('select:not([multiple])', context).each(function() { pretty_select(this); });
	};

	/**
	* Detects if the element is TinyMCE dialog/menu
	* and adds Elastic styling to it
	*/
	function tinymce_style(elem)
	{
	// TinyMCE dialog widnows
	if ($(elem).is('.mce-window')) {
	var body = $(elem).find('.mce-window-body'),
	foot = $(elem).find('.mce-foot > .mce-container-body');

	// Apply basic forms style
	if (body.length) {
	bootstrap_style(body[0]);
	}

	body.find('button').filter(function() { return $(this).parent('.mce-btn').length > 0; }).removeClass('btn btn-secondary');

	// Fix icons in Find and Replace dialog footer
	if (foot.children('.mce-widget').length === 5) {
	foot.addClass('mce-search-foot');
	}

	// Apply some form structure fixes and helper classes
	$(elem).find('.mce-charmap').parent().parent().addClass('mce-charmap-dialog');
	$(elem).find('.mce-combobox').each(function() {
	if (!$(this).children('.mce-btn').length) {
	$(this).addClass('mce-combobox-fake');
	}
	});
	$(elem).find('.mce-form > .mce-container-body').each(function() {
	if ($(this).children('.mce-formitem').length > 4) {
	$(this).addClass('mce-form-split');
	}
	});
	$(elem).find('.mce-form').next(':not(.mce-formitem)').addClass('mce-form');

	// Fix dialog height (e.g. Table properties dialog)
	if (!is_mobile()) {
	var offset, max_height = 0, height = body.height();
	$(elem).find('.mce-form').each(function() {
	max_height = Math.max(max_height, $(this).height());
	});

	if (height < max_height) {
	max_height += (body.find('.mce-tabs').height() \|\| 0) + 25;
	body.height(max_height);
	$(elem).height($(elem).height() + (max_height - height));
	$(elem).css('top', ($(window).height() - $(elem).height())/2 + 'px');
	}
	}
	}
	// TinyMCE menus on mobile
	else if ($(elem).is('.mce-menu')) {
	$(elem).prepend(
	$('<h3 class="popover-header">').append(
	$('<a class="button icon "' + 'cancel' + '">')
	.text(rcmail.gettext('close'))
	.on('click', function() { $(document.body).click(); })));

	if (window.MutationObserver) {
	var callback = function() {
	if (mode != 'phone') {
	return;
	}
	if (!$('.mce-menu:visible').length) {
	$('div.mce-overlay').click();
	}
	else if (!$('div.mce-overlay').length) {
	$('<div>').attr('class', 'popover-overlay mce-overlay')
	.appendTo('body')
	.click(function() { $(this).remove(); });
	}
	};

	(new MutationObserver(callback)).observe(elem, {attributes: true});
	}
	}
	};

	/**
	* Initializes popup menus
	*/
	function dropdowns_init()
	{
	$('[data-popup]').each(function() { popup_init(this); });

	$(document).on('click', popups_close);
	rcube_webmail.set_iframe_events({mousedown: popups_close, touchstart: popups_close});
	};

	/**
	* Init content frame
	*/
	function content_frame_init()
	{
	var last_selected = env.last_selected,
	title_reset = function(title) {
	if (typeof title !== 'string' \|\| !title.length) {
	title = $('h1.voice').text() \|\| $('title').text() \|\| '';
	}

	$('.header > .header-title', layout.content).text(title);
	};

	// display or reset the content frame
	var common_content_handler = function(e, href, show, title)
	{
	if (is_mobile()) {
	content_frame_navigation(href, e);
	}

	if (show && !layout.content.is(':visible')) {
	env.last_selected = layout.content[0];
	screen_resize();

	if (title) {
	title_reset(title);
	}
	}
	else if (!show) {
	if (env.last_selected != last_selected && !env.content_lock) {
	env.last_selected = last_selected;
	screen_resize();
	}
	title_reset();
	}

	env.content_lock = false;
	};

	var common_list_handler = function(e) {
	if (mode != 'large' && !env.content_lock && e.force) {
	show_list();
	}

	env.content_lock = false;

	// display current folder name in list header
	if (e.title) {
	$('.header > .header-title', layout.list).text(e.title);
	}
	};

	var list_handler = function(e) {
	var args = {};

	if (rcmail.env.task == 'addressbook' \|\| rcmail.env.task == 'mail') {
	args.force = true;
	}

	// display current folder name in list header
	if (rcmail.env.task == 'mail' && !rcmail.env.action) {
	var name = $.type(e) == 'string' ? e : rcmail.env.mailbox,
	folder = rcmail.env.mailboxes[name];

	args.title = folder ? folder.name : '';
	}

	common_list_handler(args);
	};

	// when loading content-frame in small-screen mode display it
	layout.content.find('iframe').on('load', function(e) {
	var href = '', show = true;

	// Reset the scroll position of the iframe-wrapper
	$(this).parent('.iframe-wrapper').scrollTop(0);

	try {
	href = e.target.contentWindow.location.href;
	show = !href.endsWith(rcmail.env.blankpage);
	// Reset title back to the default
	$(e.target.contentWindow).on('unload', title_reset);
	}
	catch(e) { /* ignore */ }

	common_content_handler(e, href, show);
	});

	rcmail
	.addEventListener('afterlist', list_handler)
	.addEventListener('afterlistgroup', list_handler)
	.addEventListener('afterlistsearch', list_handler)
	// plugins
	.addEventListener('show-list', function(e) {
	e.force = true;
	common_list_handler(e);
	})
	.addEventListener('show-content', function(e) {
	if (!$(e.obj).is('iframe')) {
	$(e.scrollElement \|\| e.obj).scrollTop(0);
	if (is_mobile()) {
	iframe_loader(e.obj);
	}
	}

	common_content_handler(e.event \|\| new Event, '_action=' + (e.mode \|\| 'edit'), true, e.title);
	});
	};

	/**
	* Content frame navigation
	*/
	function content_frame_navigation(href, event)
	{
	// Don't display navigation for create/add action frames
	if (href.match(/_action=(create\|add)/) \|\| href.match(/_nav=hide/)) {
	$(env.frame_nav).addClass('hide-nav-buttons');
	return;
	}

	var node, uid, list, _list = $('[data-list]', layout.list).data('list');

	if (!_list \|\| !(list = rcmail[_list])) {
	// hide navbar if there are no visible buttons, e.g. Help plugin UI
	if ($(env.frame_nav).is('.hide-nav-buttons') && !$('.buttons', env.frame_nav).children().length) {
	$(env.frame_nav).addClass('hidden');
	}
	return;
	}

	$(env.frame_nav).removeClass('hide-nav-buttons hidden');

	// expand collapsed row so we do not skip the whole thread
	// TODO: Unified interface for list and treelist widgets
	if (uid = list.get_single_selection()) {
	if (list.rows && list.rows[uid] && !list.rows[uid].expanded) {
	list.expand_row(event, uid);
	}
	else if (list.get_node && (node = list.get_node(uid)) && node.collapsed) {
	list.expand(uid);
	}
	}

	var prev, next,
	frame = $('#' + rcmail.env.contentframe),
	next_button = $('a.button.next', env.frame_nav).off('click').addClass('disabled'),
	prev_button = $('a.button.prev', env.frame_nav).off('click').addClass('disabled');

	if ((next = list.get_next()) \|\| rcmail.env.current_page < rcmail.env.pagecount) {
	next_button.removeClass('disabled').on('click', function() {
	env.content_lock = true;
	iframe_loader(frame);

	if (next) {
	list.select(next);
	}
	else {
	rcmail.env.list_uid = 'FIRST';
	rcmail.command('nextpage');
	}
	});
	}

	if (((prev = list.get_prev()) && (prev != '*' \|\| _list != 'subscription_list')) \|\| rcmail.env.current_page > 1) {
	prev_button.removeClass('disabled').on('click', function() {
	env.content_lock = true;
	iframe_loader(frame);

	if (prev) {
	list.select(prev);
	}
	else {
	rcmail.env.list_uid = 'LAST';
	rcmail.command('previouspage');
	}
	});
	}
	};

	/**
	* Handler for editor-init event
	*/
	function tinymce_init(o)
	{
	// Enable autoresize plugin
	o.config.plugins += ' autoresize';

	if (is_touch()) {
	// Make the toolbar icons bigger
	o.config.toolbar_items_size = null;

	// Use minimalistic toolbar
	o.config.toolbar = 'undo redo \| insert \| styleselect';

	if (o.config.plugins.match(/emoticons/)) {
	o.config.toolbar += ' emoticons';
	}
	}

	if (rcmail.task == 'mail' && rcmail.env.action == 'compose') {
	var form = $('#compose-content > form'),
	keypress = function(e) {
	if (e.key == 'Tab' && e.shiftKey) {
	$('#compose-content > form').scrollTop(0);
	}
	};

	// Shift+Tab on mail compose editor scrolls the page to the top
	o.config.setup_callback = function(ed) {
	ed.on('keypress', keypress);
	};

	$('#composebody').on('keypress', keypress);

	// Keep the editor toolbar on top of the screen on scroll
	form.on('scroll', function() {
	var container = $('.mce-container-body', form),
	toolbar = $('.mce-top-part', container),
	editor_offset = container.offset(),
	header_top = form.offset().top;

	if (editor_offset && (editor_offset.top - header_top < 0)) {
	toolbar.css({position: 'fixed', top: header_top + 'px', width: container.width() + 'px'});
	}
	else {
	toolbar.css({position: 'relative', top: 0, width: 'auto'})
	}
	});

	$(window).resize(function() { form.trigger('scroll'); });
	}
	};

	function datepicker_init(datepicker)
	{
	// Datepicker widget improvements: overlay element, styling updates on calendar element update
	// The widget does not provide any event system, so we use MutationObserver
	if (window.MutationObserver) {
	$(datepicker).not('[data-observed]').each(function() {
	var overlay, hidden = true,
	win = is_framed ? parent : window,
	callback = function(data) {
	$.each(data, function(i, v) {
	// add/remove overlay on widget show/hide
	if (v.type == 'attributes') {
	var is_hidden = $(v.target).attr('aria-hidden') == 'true';
	if (is_hidden != hidden) {
	if (!is_hidden) {
	overlay = $('<div>').attr('class', 'ui-widget-overlay datepicker')
	.appendTo(win.document.body)
	.click(function(e) {
	$(this).remove();
	if (is_framed) {
	$.datepicker._hideDatepicker();
	}
	});
	}
	else if (overlay) {
	overlay.remove();
	}
	hidden = is_hidden;
	}
	}
	else if (v.addedNodes.length) {
	// apply styles when widget content changed
	win.UI.bootstrap_style(v.target);

	// Month/Year change handlers do not work from parent, fix it
	if (is_framed) {
	win.$('select.ui-datepicker-month', v.target).on('change', function() {
	$.datepicker._selectMonthYear($.datepicker._lastInput, this, "M");
	});
	win.$('select.ui-datepicker-year', v.target).on('change', function() {
	$.datepicker._selectMonthYear($.datepicker._lastInput, this, "Y");
	});
	}
	}
	});
	};

	$(this).attr('data-observed', '1');

	if (is_framed) {
	// move the datepicker to parent window
	$(this).detach().appendTo(parent.document.body);

	// create fake element, so the valid one is not removed by datepicker code
	$('<div id="ui-datepicker-div" class="hidden">').appendTo(document.body);
	}

	(new MutationObserver(callback)).observe(this, {childList: true, subtree: false, attributes: true, attributeFilter: ['aria-hidden']});
	});
	}
	};

	/**
	* Handler for some Roundcube core popups
	*/
	function rcmail_popup_init(o)
	{
	// Add some common styling to the autocomplete/googiespell popups
	$('table,ul', o.obj).addClass('toolbarmenu listing iconized');
	$(o.obj).addClass('popupmenu popover');
	bootstrap_style(o.obj);

	// for googiespell list
	$('input', o.obj).addClass('form-control');

	// Modify the googiespell menu on mobile
	if (is_mobile() && $(o.obj).is('.googie_window')) {
	// Set popup Close title
	var title = rcmail.gettext('close'),
	class_name = 'button icon cancel',
	close_link = $('<a>').attr('class', class_name).text(title)
	.click(function(e) {
	e.stopPropagation();
	$('.popover-overlay').remove();
	$(o.obj).hide();
	});

	$('<h3 class="popover-header">').append(close_link).prependTo(o.obj);

	// add overlay element for phone layout
	if (!$('.popover-overlay').length) {
	$('<div>').attr('class', 'popover-overlay')
	.appendTo('body')
	.click(function() { $(this).remove(); });
	}

	$('table,button', o.obj).click(function(e) {
	if (!$(e.target).is('input')) {
	$('.popover-overlay').remove();
	}
	});
	}
	};

	/**
	* Handler for 'enable-command' event
	*/
	function enable_command_handler(args)
	{
	if (is_framed) {
	$.each(frame_buttons, function(i, button) {
	if (args.command == button.command) {
	parent.$('#' + button.button_id)[args.status ? 'removeClass' : 'addClass']('disabled');
	}
	});
	}

	if (rcmail.task == 'mail') {
	switch (args.command) {
	case 'reply-list':
	if (rcmail.env.reply_all_mode == 1) {
	var label = rcmail.gettext(args.status ? 'replylist' : 'replyall');
	$('a.button.reply-all').attr('title', label).find('.inner').text(label);
	}
	break;

	case 'compose-encrypted':
	// show the toolbar button for Mailvelope
	if (args.status) {
	$('a.button.encrypt:not(.icon)').parent().show();
	}
	break;

	case 'compose-encrypted-signed':
	// enable selector for encrypt and sign
	$('#encryption-menu-button').show();
	break;
	}
	}
	};

	/**
	* screen mode
	*/
	function screen_mode()
	{
	var size, width = $(window).width();

	if (width <= 480)
	size = 'phone';
	else if (width > 1200)
	size = 'large';
	else if (width > 768)
	size = 'normal';
	else
	size = 'small';

	touch = width <= 1024;
	mode = size;
	};

	/**
	* Window resize handler
	* Does layout reflows e.g. on screen orientation change
	*/
	function resize()
	{
	var mobile;

	screen_mode();
	screen_resize();
	screen_resize_html();

	// disable ext-windows and other features
	if (mobile = is_mobile()) {
	rcmail.set_env(env.small_screen_config);
	rcmail.enable_command('extwin', false);
	}
	else {
	rcmail.set_env(env.config);
	rcmail.enable_command('extwin', true);
	}

	// Hide content frame buttons on small devices (with frame toolbar in parent window)
	$.each(content_buttons, function() { $(this)[mobile ? 'hide' : 'show'](); });
	};

	function screen_resize()
	{
	if (is_framed && !layout.sidebar.length && !layout.list.length) {
	return;
	}

	switch (mode) {
	case 'phone': screen_resize_phone(); break;
	case 'small': screen_resize_small(); break;
	case 'normal': screen_resize_normal(); break;
	case 'large': screen_resize_large(); break;
	}

	screen_resize_logo(mode);
	screen_resize_headers();

	// On iOS and Android the content frame height is never correct, fix it
	if (bw.webkit) {
	$('.iframe-wrapper').each(function() {
	var h = $(this).height();
	if (h) {
	$(this).children('iframe').height(h);
	}
	});
	}
	};

	/**
	* Assigns layout-* and touch-mode class to the 'html' element
	*
	* If we're inside an iframe that is small we have to
	* check if the parent window is also small (mobile).
	* We use that e.g. to still display desktop-like popovers in dialogs
	*/
	function screen_resize_html()
	{
	var meta = layout_metadata(),
	html = $(document.documentElement);

	if (html[0].className.match(/layout-([a-z]+)/)) {
	if (RegExp.$1 != meta.mode) {
	html.removeClass('layout-' + RegExp.$1)
	.addClass('layout-' + meta.mode);
	}
	}
	else {
	html.addClass('layout-' + meta.mode);
	}

	if (meta.touch && !html.is('.touch')) {
	html.addClass('touch');
	}
	else if (!meta.touch && html.is('.touch')) {
	html.removeClass('touch');
	}
	};

	function screen_resize_logo(mode)
	{
	if (mode == 'phone' && $('#logo').data('src-small')) {
	$('#logo').attr('src', $('#logo').data('src-small'));
	}
	else {
	$('#logo').attr('src', $('#logo').data('src-default'));
	}
	}

	/**
	* Sets left and right margin to the header title element to make it
	* properly centered depending on the number of buttons on both sides
	*/
	function screen_resize_headers()
	{
	$('#layout > div > .header').each(function() {
	var title, right = 0, left = 0, padding = 0,
	sizes = {left: 0, right: 0};

	$(this).children(':visible').each(function() {
	if (!title && $(this).is('.header-title')) {
	title = $(this);
	return;
	}

	sizes[title ? 'right' : 'left'] += this.offsetWidth;
	});

	if (padding + sizes.right >= sizes.left) {
	right = 0;
	left = sizes.right + padding - sizes.left;
	}
	else {
	left = 0;
	right = sizes.left - (padding + sizes.right);
	}

	$(title).css({
	'margin-right': right + 'px',
	'margin-left': left + 'px',
	'padding-right': padding + 'px'
	});
	});
	};

	function screen_resize_phone()
	{
	screen_resize_small_all();
	app_menu(false);
	};

	function screen_resize_small()
	{
	screen_resize_small_all();
	app_menu(true);
	};

	function screen_resize_normal()
	{
	var show;

	if (layout.list.length) {
	show = layout.list.is(env.last_selected) \|\| (!layout.sidebar.is(env.last_selected) && !layout.sidebar.is('.layout-sticky'));
	layout.list[show ? 'removeClass' : 'addClass']('hidden');
	}
	if (layout.sidebar.length) {
	show = !layout.list.length \|\| layout.sidebar.is(env.last_selected) \|\| layout.sidebar.is('.layout-sticky');
	layout.sidebar[show ? 'removeClass' : 'addClass']('hidden');
	}

	layout.content.removeClass('hidden');
	app_menu(true);
	screen_resize_small_none();

	if (layout.list) {
	$('.header > ul.toolbar', layout.list).addClass('popupmenu toolbarmenu').removeClass('toolbar');
	}
	};

	function screen_resize_large()
	{
	$.each(layout, function(name, item) { item.removeClass('hidden'); });

	screen_resize_small_none();

	if (layout.list) {
	$('.header > ul.toolbarmenu.popupmenu', layout.list).removeClass('popupmenu toolbarmenu').addClass('toolbar');
	}
	};

	function screen_resize_small_all()
	{
	var show, got_content = false;

	if (layout.content.length) {
	show = got_content = layout.content.is(env.last_selected);
	layout.content[show ? 'removeClass' : 'addClass']('hidden');
	$('.header > ul.toolbar', layout.content).addClass('popupmenu');
	}

	if (layout.list.length) {
	show = !got_content && layout.list.is(env.last_selected);
	layout.list[show ? 'removeClass' : 'addClass']('hidden');
	$('.header > ul.toolbar', layout.list).addClass('popupmenu');
	}

	if (layout.sidebar.length) {
	show = !got_content && (layout.sidebar.is(env.last_selected) \|\| !layout.list.length);
	layout.sidebar[show ? 'removeClass' : 'addClass']('hidden');
	}

	if (got_content) {
	buttons.back_list.show();
	}
	};

	function screen_resize_small_none()
	{
	buttons.back_list.filter(function() { return $(this).parents('.sidebar').length == 0; }).hide();
	$('ul.toolbar.popupmenu').removeClass('popupmenu');
	};

	function show_content(unsticky)
	{
	// show sidebar and hide list
	layout.list.addClass('hidden');
	layout.sidebar.addClass('hidden');
	layout.content.removeClass('hidden');

	if (unsticky) {
	layout.sidebar.removeClass('layout-sticky');
	}

	screen_resize_headers();
	env.last_selected = layout.content[0];
	};

	function show_sidebar(sticky)
	{
	// show sidebar and hide list
	layout.list.addClass('hidden');
	layout.sidebar.removeClass('hidden');

	if (sticky) {
	layout.sidebar.addClass('layout-sticky');
	}

	if (mode == 'small' \|\| mode == 'phone') {
	layout.content.addClass('hidden');
	}

	screen_resize_headers();
	env.last_selected = layout.sidebar[0];
	};

	function show_list(scroll)
	{
	if (!layout.list.length && !layout.sidebar.length) {
	history.back();
	}
	else {
	// show list and hide sidebar and content
	layout.sidebar.addClass('hidden').removeClass('layout-sticky');
	layout.list.removeClass('hidden');

	if (mode == 'small' \|\| mode == 'phone') {
	hide_content();
	}

	if (scroll) {
	layout.list.children('.scroller').scrollTop(0);
	}

	env.last_selected = layout.list[0];
	}

	screen_resize_headers();
	};

	function hide_content()
	{
	// show sidebar or list, hide content frame
	env.last_selected = layout.list[0] \|\| layout.sidebar[0];
	screen_resize();

	// reset content frame, so we can load it again
	rcmail.show_contentframe(false);

	// now we have to unselect selected row on the list
	$('[data-list]', layout.list).each(function() {
	var list = $(this).data('list');
	if (rcmail[list]) {
	if (rcmail[list].clear_selection) {
	rcmail[list].clear_selection(); // list widget
	}
	else if (rcmail[list].select) {
	rcmail[list].select(); // treelist widget
	}
	}
	});
	};

	// show menu widget
	function app_menu(show)
	{
	if (show) {
	if (mode == 'phone') {
	$('<div id="menu-overlay" class="popover-overlay">')
	.on('click', function() { app_menu(false); })
	.appendTo('body');

	if (!env.menu_initialized) {
	env.menu_initialized = true;
	$('a', layout.menu).on('click', function(e) { if (mode == 'phone') app_menu(); });
	}

	layout.menu.addClass('popover');
	}

	layout.menu.removeClass('hidden');
	}
	else {
	$('#menu-overlay').remove();
	layout.menu.addClass('hidden').removeClass('popover');
	}
	};

	/**
	* Triggered when a UI message is displayed
	*/
	function message_displayed(p)
	{
	if (p.type == 'loading' && $('.iframe-loader:visible').length) {
	// hide original message object, we don't need two "loaders"
	rcmail.hide_message(p.object);
	return;
	}

	alert_style(p.object, p.type, true);
	$(p.object).attr('role', 'alert');
	};

	/**
	* Applies some styling and icon to an alert object
	*/
	function alert_style(object, type, wrap)
	{
	var tmp, classes = 'ui alert',
	addicon = !$(object).is('.noicon'),
	map = {
	information: 'alert-info',
	notice: 'alert-info',
	confirmation: 'alert-success',
	warning: 'alert-warning',
	error: 'alert-danger',
	loading: 'alert-info loading',
	uploading: 'alert-info loading',
	vcardattachment: 'alert-info' // vcard_attachments plugin
	};

	// we need the content to be non-text node for best alignment
	if (wrap && addicon && !$(object).is('.aligned-buttons')) {
	$(object).html($('<span>').html($(object).html()));
	}

	// Type can be e.g. 'notice chat'
	type = type.split(' ')[0];

	if (tmp = map[type]) {
	classes += ' ' + tmp;
	if (addicon) {
	$('<i>').attr('class', 'icon').prependTo(object);
	}
	}

	$(object).addClass(classes);
	};

	/**
	* Set UI dialogs size/style depending on screen size
	*/
	function dialog_open(dialog)
	{
	var me = $(dialog.uiDialog),
	width = me.width(),
	height = me.height(),
	maxWidth = $(window).width(),
	maxHeight = $(window).height();

	if (maxWidth <= 480) {
	me.css({width: '100%', height: '100%'});
	}
	else {
	if (height > maxHeight) {
	me.css('height', '100%');
	}
	if (width > maxWidth) {
	me.css('width', '100%');
	}
	}

	// Close all popovers
	$(document).click();

	// Display loader when the dialog has an iframe
	iframe_loader($('div.popup > iframe', me));

	// TODO: style buttons/forms
	bootstrap_style(dialog.uiDialog);
	};

	/**
	* Initializes searchbar widget
	*/
	function searchbar_init(bar)
	{
	var options_button = $('a.button.options', bar),
	input = $('input:not([type=hidden])', bar),
	placeholder = input.attr('placeholder'),
	form = $('form', bar),
	is_search_pending = function() {
	if (input.val()) {
	return true;
	}

	if (rcmail.task == 'mail' && $('#s_interval').val()) {
	return true;
	}

	if (rcmail.gui_objects.search_filter && $(rcmail.gui_objects.search_filter).val() != 'ALL') {
	return true;
	}

	if (rcmail.gui_objects.foldersfilter && $(rcmail.gui_objects.foldersfilter).val() != '---') {
	return true;
	}
	},
	close_func = function() {
	if ($(bar).is('.open')) {
	options_button.click();
	}
	},
	update_func = function() {
	$(bar)[is_search_pending() ? 'addClass' : 'removeClass']('active');
	};

	options_button.on('click', function(e) {
	var id = $(this).data('target'),
	options = $('#' + id),
	open = options.is(':visible');

	if (options.length) {
	if (!open) {
	if (ref[id]) {
	ref[id](options.get(0), this, e);
	}
	else if (typeof window[id] == 'function') {
	window[id](options.get(0), this, e);
	}
	}

	options.next()[open ? 'show' : 'hide']();
	options.toggleClass('hidden');
	$('.floating-action-buttons').toggleClass('hidden');
	$(bar).toggleClass('open');

	$('button.search', options).off('click.search').on('click.search', function() {
	options_button.trigger('click');
	update_func();
	});
	}
	});

	input.on('input change', update_func)
	.on('focus blur', function(e) { input.attr('placeholder', e.type == 'blur' ? placeholder : ''); });

	// Search reset action
	$('a.reset', bar).on('click', function(e) {
	// for treelist widget's search setting val and keyup.treelist is needed
	// in normal search form reset-search command will do the trick
	input.val('').change().trigger('keyup.treelist', {keyCode: 27});
	if ($(bar).is('.open')) {
	options_button.click();
	}

	// Reset filter
	if (rcmail.gui_objects.search_filter) {
	$(rcmail.gui_objects.search_filter).val('ALL');
	}

	if (rcmail.gui_objects.foldersfilter) {
	$(rcmail.gui_objects.foldersfilter).val('---').change();
	rcmail.folder_filter('---');
	}

	update_func();
	});

	rcmail.addEventListener('init', update_func)
	.addEventListener('responsebeforesearch', update_func)
	// close options form on list/search request
	.addEventListener('beforelist', close_func)
	.addEventListener('beforesearch', close_func);
	};

	/**
	* Converts toolbar menu into popup-menu for small screens
	*/
	function toolbar_init()
	{
	if (env.got_smart_toolbar) {
	return;
	}

	env.got_smart_toolbar = true;

	var list_mark, items = [],
	list_items = [],
	meta = layout_metadata(),
	button_func = function(button, items, cloned) {
	var item = $('<li role="menuitem">'),
	button = cloned ? create_cloned_button($(button), true, 'hidden-big hidden-large') : $(button).detach();

	// Remove empty text nodes that break alignment of text of the menu item
	button.contents().filter(function() { if (this.nodeType == 3 && !$.trim(this.nodeValue).length) $(this).remove(); });

	if (button.is('.spacer')) {
	item.addClass('spacer');
	}
	else {
	item.append(button);
	}

	items.push(item);
	};

	// convert content toolbar to a popup list
	if (layout.content) {
	$('.header > .toolbar', layout.content).each(function() {
	var toolbar = $(this);

	toolbar.children().each(function() { button_func(this, items); });
	toolbar.remove();
	});
	}

	// convert list toolbar to a popup list
	if (layout.list) {
	$('.header > .toolbar', layout.list).each(function() {
	var toolbar = $(this);

	list_mark = toolbar.next();

	toolbar.children().each(function() {
	if (meta.mode != 'large') {
	// TODO: Would be better to set this automatically on submenu display
	// i.e. in show/shown event (see popup_init()), if possible
	$(this).data('popup-pos', 'right');
	}

	// add items to the content menu too
	button_func(this, items, true);
	button_func(this, list_items);
	});

	toolbar.remove();
	});
	}

	// special elements to clone and add to the toolbar (mobile only)
	$('ul[data-menu="toolbar-small"] > li > a').each(function() {
	var button = $(this).clone();

	button.attr('id', this.id + '_clone');

	// TODO: rcmail.register_button()

	items.push($('<li role="menuitem">').addClass('hidden-big').append(button));
	});

	// append the new list toolbar and menu button
	if (list_items.length) {
	var container = layout.list.children('.header'),
	menu_attrs = {'class': 'toolbar popupmenu listing iconized', id: 'toolbar-list-menu'},
	menu_button = $('<a class="button icon toolbar-list-button" href="#list-menu">')
	.attr({'data-popup': 'toolbar-list-menu'}),
	// TODO: copy original toolbar attributes (class, role, aria-*)
	toolbar = $('<ul>').attr(menu_attrs).data('popup-parent', container).append(list_items);

	if (list_mark.length) {
	toolbar.insertBefore(list_mark);
	}
	else {
	container.append(toolbar);
	}
	container.append(menu_button);
	}

	// append the new toolbar and menu button
	if (items.length) {
	var container = layout.content.children('.header'),
	menu_attrs = {'class': 'toolbar popupmenu listing iconized', id: 'toolbar-menu'},
	menu_button = $('<a class="button icon toolbar-menu-button" href="#menu">')
	.attr({'data-popup': 'toolbar-menu'});

	container
	// TODO: copy original toolbar attributes (class, role, aria-*)
	.append($('<ul>').attr(menu_attrs).data('popup-parent', container).append(items))
	.append(menu_button);

	if (layout.list.length) {
	// bind toolbar menu with the menu button in the list header
	$('a.toolbar-menu-button', layout.list).click(function(e) {
	e.stopPropagation();
	menu_button.click();
	});
	}
	}
	};

	/**
	* Initialize a popup for specified button element
	*/
	function popup_init(item, win)
	{
	// On mobile we display the menu from the frame in the parent window
	if (is_framed && is_mobile()) {
	return parent.UI.popup_init(item, win \|\| window);
	}

	if (!win) win = window;
	var level,
	popup_id = $(item).data('popup'),
	popup = $(win.$('#' + popup_id).get(0)), // a "hack" to support elements in frames
	popup_orig = popup,
	title = $(item).attr('title'),
	content_element = function() {
	// On mobile we display a menu from the frame in the parent window
	// To make menu actions working we have to clone the menu
	// and pass click events to it...
	if (win != window) {
	popup = popup_orig.clone(true, true);
	popup.attr('id', popup_id + '-clone')
	.appendTo(document.body)
	.find('li > a').attr('onclick', '').off('click').on('click', function(e) {
	if (!$(this).is('.disabled')) {
	$(item).popover('hide');
	win.$('#' + $(this).attr('id')).click();
	}

	return false;
	});
	}

	return popup.get(0);
	};

	$(item).attr({
	'aria-haspopup': 'true',
	'aria-expanded': 'false',
	'aria-owns': popup_id,
	})
	.popover({
	content: content_element,
	trigger: $(item).data('popup-trigger') \|\| 'click',
	placement: $(item).data('popup-pos') \|\| 'bottom',
	animation: true,
	boundary: 'window', // fix for https://github.com/twbs/bootstrap/issues/25428
	html: true
	})
	.on('show.bs.popover', function(event) {
	var init_func = popup.data('popup-init');

	if (popup_id && menus[popup_id]) {
	menus[popup_id].transitioning = true;
	}

	if (init_func && ref[init_func]) {
	ref[init_func](popup.get(0), item, event);
	}
	else if (init_func && win[init_func]) {
	win[init_func](popup.get(0), item, event);
	}

	level = $('div.popover:visible').length + 1;

	popup.removeClass('hidden').attr('aria-hidden', false)
	// Stop propagation on menu items that have popups
	// to make a click on them not hide their parent menu(s)
	.find('[aria-haspopup="true"]')
	.data('level', level + 1)
	.off('click.popup')
	.on('click.popup', function(e) { e.stopPropagation(); });

	if (!is_mobile()) {
	// Set popup height so it is less than the window height
	popup.css('max-height', Math.min(36 * 15 - 1, $(window).height() - 30));
	}
	})
	.on('shown.bs.popover', function(event) {
	var mobile = is_mobile(),
	popover = $('#' + $(item).attr('aria-describedby'));

	level = $(item).data('level') \|\| 1;

	// Set popup Back/Close title
	if (mobile) {
	var label = level > 1 ? 'back' : 'close',
	title = rcmail.gettext(label),
	class_name = 'button icon ' + (label == 'back' ? 'back' : 'cancel');

	$('.popover-header', popover).empty()
	.append($('<a>').attr('class', class_name).text(title)
	.on('click', function(e) {
	$(item).popover('hide');
	if (level > 1) {
	e.stopPropagation();
	}
	})
	.on('mousedown', function(e) {
	// stop propagation to i.e. do not close jQuery-UI dialogs below
	e.stopPropagation();
	})
	);
	}

	// Hide other menus on the same level
	$.each(menus, function(id, prop) {
	if ($(prop.target).data('level') == level && id != popup_id) {
	menu_hide(id);
	}
	});

	// On keyboard event focus the first (active) entry and enable keyboard navigation
	if ($(item).data('event') == 'key') {
	popover.off('keydown.popup').on('keydown.popup', 'a.active', function(e) {
	var entry, node, mode = 'next';

	switch (e.which) {
	case 27: // ESC
	case 9: // TAB
	$(item).popover('toggle').focus();
	return false;

	case 13: // ENTER
	case 32: // SPACE
	$(this).trigger('click').data('event', 'key');
	return false; // for IE

	case 38: // ARROW-UP
	case 63232:
	mode = 'previous';
	case 40: // ARROW-DOWN
	case 63233:
	entry = e.target.parentNode;
	while (entry = entry[mode + 'Sibling']) {
	if (node = $(entry).children('.active')[0]) {
	node.focus();
	break;
	}
	}
	return false; // prevents from scrolling the whole page
	}
	});

	- popover.find('a.active:first').focus();
	+ popover.find('a.active').first().focus();
	}

	if (popup_id && menus[popup_id]) {
	menus[popup_id].transitioning = false;
	}

	// add overlay element for phone layout
	if (mobile && !$('.popover-overlay').length) {
	$('<div>').attr('class', 'popover-overlay')
	.appendTo('body')
	.click(function() { $(this).remove(); });
	}

	$('.popover-body', popover).addClass('webkit-scroller');
	})
	.on('hide.bs.popover', function() {
	if (level == 1) {
	$('.popover-overlay').remove();
	}

	if (popup_id && menus[popup_id] && popup.is(':visible')) {
	menus[popup_id].transitioning = true;
	}
	})
	.on('hidden.bs.popover', function() {
	if (/-clone$/.test(popup.attr('id'))) {
	popup.remove();
	}
	else {
	popup.attr('aria-hidden', true)
	// Some menus aren't being hidden, force that
	.addClass('hidden')
	// Bootstrap will detach the popup element from
	// the DOM (https://github.com/twbs/bootstrap/issues/20219)
	// making our menus to not update buttons state.
	// Work around this by attaching it back to the DOM tree.
	popup.appendTo(popup.data('popup-parent') \|\| document.body);
	}

	// close orphaned popovers, for some reason there are sometimes such dummy elements left
	$('.popover-body:empty').each(function() { $(this).parent().remove(); });

	if (popup_id && menus[popup_id]) {
	delete menus[popup_id];
	}
	})
	// Because Bootstrap does not provide originalEvent in show/shown events
	// we have to handle that by our own using click and keydown handlers
	.on('click', function() {
	$(this).data('event', 'mouse');
	})
	.on('keydown', function(e) {
	if (e.originalEvent) {
	switch (e.originalEvent.which) {
	case 13:
	case 32:
	// Open the popup on ENTER or SPACE
	e.preventDefault();
	$(this).data('event', 'key').popover('toggle');
	break;
	case 27:
	// Close the popup on ESC key
	$(this).popover('hide');
	break;
	}
	}
	});

	// re-add title attribute removed by bootstrap popover
	if (title) {
	$(item).attr('title', title);
	}

	popup.attr('aria-hidden', 'true').data('button', item);

	// stop propagation to e.g. do not hide the popup when
	// clicking inside on form elements
	if (popup.data('editable')) {
	popup.on('click mousedown', function(e) { e.stopPropagation(); });
	}
	};

	/**
	* Closes all popups (for use as event handler)
	*/
	function popups_close(e)
	{
	// Ignore some of propagated click events (see pretty_select())
	if (popups_close_lock && popups_close_lock > (new Date().getTime() - 250)) {
	return;
	}

	$('.popover.show').each(function() {
	var popup = $('.popover-body', this),
	button = popup.children().first().data('button');

	if (button && e.target != button && !$(button).find(e.target).length && typeof button !== 'string') {
	$(button).popover('hide');
	}

	if (!button) {
	$(this).remove();
	}
	});
	};

	/**
	* Handler for menu-open and menu-close events
	*/
	function menu_toggle(p)
	{
	if (!p \|\| !p.name \|\| (p.props && p.props.skinable === false)) {
	return;
	}

	if (is_framed && is_mobile()) {
	if (!p.win) {
	p.win = window;
	}
	return parent.UI.menu_toggle(p);
	}

	if (p.name == 'messagelistmenu') {
	menu_messagelist(p);
	}
	else if (p.event == 'menu-open') {
	var fn, pos,
	- content = $('ul:first', p.obj),
	+ content = $('ul', p.obj).first(),
	target = p.props && p.props.link ? p.props.link : p.originalEvent.target;

	if ($(target).is('span')) {
	target = $(target).parents('a,li')[0];
	}

	if (p.name.match(/^drag/)) {
	// create a fake element to position drag menu on the cursor position
	pos = rcube_event.get_mouse_pos(p.originalEvent);
	target = $('<a>').css({
	position: 'absolute',
	left: pos.x,
	top: pos.y,
	height: '1px',
	width: '1px',
	visibility: 'hidden'
	})
	.appendTo(document.body).get(0);
	}

	pos = $(target).data('popup-pos') \|\| 'right';

	if (p.name == 'folder-selector') {
	content.addClass('listing folderlist');
	}
	else if (p.name == 'addressbook-selector' \|\| p.name == 'contactgroup-selector') {
	content.addClass('listing contactlist');
	}
	else if (content.hasClass('toolbarmenu')) {
	content.addClass('listing');
	}

	if (p.name == 'pagejump-selector') {
	content.addClass('simplelist');
	p.obj.addClass('simplelist');
	pos = 'top';
	}

	// There can be only one menu of the same type
	if (menus[p.name]) {
	menu_hide(p.name, p.originalEvent);
	}

	// Popover menus use animation. Sometimes the same menu is
	// immediately hidden and shown (e.g. folder-selector for copy and move action)
	// we have to wait until the previous menu hides before we can open it again
	fn = function() {
	if (menus[p.name] && menus[p.name].transitioning) {
	return setTimeout(fn, 50);
	}

	if (!$(target).data('popup')) {
	$(target).data({
	popup: p.name,
	'popup-pos': pos,
	'popup-trigger': 'manual'
	});
	popup_init(target, p.win);
	}

	menus[p.name] = {target: target};
	$(target).popover('show');
	}

	fn();
	}
	else {
	menu_hide(p.name, p.originalEvent);
	}

	// Stop propagation so multi-level menus work properly
	p.originalEvent.stopPropagation();
	};

	/**
	* Close menu by name
	*/
	function menu_hide(name, event)
	{
	var target = menu_target(name);

	if (name.match(/^drag/)) {
	$(target).popover('dispose').remove();
	}
	else {
	$(target).popover('hide');

	// In phone mode close all menus when forwardmenu is requested to be closed
	// FIXME: This is a hack, we need some generic solution.
	if (name == 'forwardmenu') {
	popups_close(event);
	}
	}
	};

	/**
	* Destroys menu by name
	*
	* This is required when you replace the menu content element
	*/
	function menu_destroy(name)
	{
	$('[aria-owns=' + name + ']').popover('dispose').data('popup', null);
	};

	/**
	* Get menu target by name
	*/
	function menu_target(name)
	{
	var target;

	if (menus[name]) {
	target = menus[name].target;
	}
	else {
	target = $('#' + name).data('button');

	if (!target) {
	// catch cases as 'forwardmenu' where menu suffix has no hyphen
	// or try with -menu suffix if it's not in the menu name already
	if (name.match(/(?!-)menu$/)) {
	name = name.substr(0, name.length - 4);
	}

	target = $('#' + name + '-menu').data('button');
	}
	}

	return target;
	};

	/**
	* Messages list options dialog
	*/
	function menu_messagelist(p)
	{
	var content = $('#listoptions-menu'),
	width = content.width() + 25,
	dialog = content.clone(true);

	// set form values
	$('select[name="sort_col"]', dialog).val(rcmail.env.sort_col \|\| '');
	$('select[name="sort_ord"]', dialog).val(rcmail.env.sort_order \|\| 'ASC');
	$('select[name="mode"]', dialog).val(rcmail.env.threading ? 'threads' : 'list');

	// Fix id/for attributes
	$('select', dialog).each(function() { this.id = this.id + '-clone'; });
	$('label', dialog).each(function() { $(this).attr('for', $(this).attr('for') + '-clone'); });

	var save_func = function(e) {
	if (rcube_event.is_keyboard(e.originalEvent)) {
	$('#listmenulink').focus();
	}

	var col = $('select[name="sort_col"]', dialog).val(),
	ord = $('select[name="sort_ord"]', dialog).val(),
	mode = $('select[name="mode"]', dialog).val();

	rcmail.set_list_options([], col, ord, mode == 'threads' ? 1 : 0);
	return true;
	};

	dialog = rcmail.simple_dialog(dialog, rcmail.gettext('listoptionstitle'), save_func, {
	closeOnEscape: true,
	minWidth: 400
	});
	};

	/**
	* About dialog
	*/
	function about_dialog(elem)
	{
	var support_url, support_func, support_button = false,
	dialog = $('<iframe>').attr({id: 'aboutframe', src: rcmail.url('settings/about', {_framed: 1})}),
	support_link = $('#supportlink');

	if (support_link.length && (support_url = support_link.attr('href'))) {
	support_button = support_link.text();
	support_func = function(e) { support_url.indexOf('mailto:') < 0 ? window.open(support_url) : location.href = support_url; };
	}

	rcmail.simple_dialog(dialog, $(elem).text(), support_func, {
	button: support_button,
	button_class: 'help',
	cancel_button: 'close',
	height: 400
	});
	};

	/**
	* Show/hide more mail headers (envelope)
	*/
	function headers_show(button)
	{
	var headers = $(button).parent().prev();
	headers[headers.is('.hidden') ? 'removeClass' : 'addClass']('hidden');
	};

	/**
	* Mail headers dialog
	*/
	function headers_dialog()
	{
	var props = {_uid: rcmail.env.uid, _mbox: rcmail.env.mailbox, _framed: 1},
	dialog = $('<iframe>').attr({id: 'headersframe', src: rcmail.url('headers', props)});

	rcmail.simple_dialog(dialog, rcmail.gettext('arialabelmessageheaders'), null, {
	cancel_button: 'close',
	height: 400
	});
	};

	/**
	* Mail import dialog
	*/
	function import_dialog()
	{
	if (!rcmail.commands['import-messages']) {
	return;
	}

	var content = $('#uploadform'),
	dialog = content.clone(true);

	var save_func = function(e) {
	return rcmail.command('import-messages', $(dialog.find('form')[0]));
	};

	rcmail.simple_dialog(dialog, rcmail.gettext('importmessages'), save_func, {
	button: 'import',
	closeOnEscape: true,
	minWidth: 400
	});
	};

	/**
	* Search options menu popup
	*/
	function searchmenu(obj)
	{
	var n, all,
	list = $('input[name="s_mods[]"]', obj),
	scope_select = $('#s_scope', obj),
	mbox = rcmail.env.mailbox,
	mods = rcmail.env.search_mods,
	scope = rcmail.env.search_scope \|\| 'base';

	if (!$(obj).data('initialized')) {
	$(obj).data('initialized', true);
	if (list.length) {
	list.on('change', function() { set_searchmod(obj, this); });
	rcmail.addEventListener('beforesearch', function() { set_searchmod(obj); });
	}
	}

	if (rcmail.env.search_mods) {
	if (rcmail.env.task == 'mail') {
	if (scope == 'all') {
	mbox = '*';
	}

	mods = mods[mbox] ? mods[mbox] : mods['*'];
	all = 'text';
	scope_select.val(scope);
	}
	else {
	all = '*';
	}

	if (mods[all]) {
	list.map(function() {
	this.checked = true;
	this.disabled = this.value != all;
	});
	}
	else {
	list.prop('disabled', false).prop('checked', false);
	for (n in mods) {
	list.filter('[value="' + n + '"]').prop('checked', true);
	}
	}
	}
	};

	function set_searchmod(menu, elem)
	{
	var all, m, task = rcmail.env.task,
	mods = rcmail.env.search_mods,
	mbox = rcmail.env.mailbox,
	scope = $('#s_scope', menu).val(),
	interval = $('#s_interval', menu).val();

	if (scope == 'all') {
	mbox = '*';
	}

	if (!mods) {
	mods = {};
	}

	if (task == 'mail') {
	if (!mods[mbox]) {
	mods[mbox] = rcube_clone_object(mods['*']);
	}
	m = mods[mbox];
	all = 'text';

	rcmail.env.search_scope = scope;
	rcmail.env.search_interval = interval;
	}
	else { //addressbook
	m = mods;
	all = '*';
	}

	if (!elem) {
	return;
	}

	if (!elem.checked) {
	delete(m[elem.value]);
	}
	else {
	m[elem.value] = 1;
	}

	// mark all fields
	if (elem.value == all) {
	$('input[name="s_mods[]"]', menu).map(function() {
	if (this == elem) {
	return;
	}

	this.checked = true;

	if (elem.checked) {
	this.disabled = true;
	delete m[this.value];
	}
	else {
	this.disabled = false;
	m[this.value] = 1;
	}
	});
	}

	rcmail.set_searchmods(m);
	};

	/**
	* Spellcheck languages list
	*/
	function spellmenu(obj)
	{
	var i, link, li, list = [],
	lang = rcmail.spellcheck_lang(),
	ul = $('ul', obj);

	if (!ul.length) {
	ul = $('<ul class="toolbarmenu selectable listing iconized" role="menu">');

	for (i in rcmail.env.spell_langs) {
	li = $('<li role="menuitem">');
	link = $('<a href="#'+ i +'" tabindex="0"></a>')
	.text(rcmail.env.spell_langs[i])
	.addClass('active').data('lang', i)
	.on('click keypress', function(e) {
	if (e.type != 'keypress' \|\| rcube_event.get_keycode(e) == 13) {
	rcmail.spellcheck_lang_set($(this).data('lang'));
	rcmail.hide_menu('spell-menu', e);
	return false;
	}
	});

	link.appendTo(li);
	list.push(li);
	}

	ul.append(list).appendTo(obj);
	}

	// select current language
	$('li', ul).each(function() {
	var el = $('a', this);
	if (el.data('lang') == lang) {
	el.addClass('selected').attr('aria-selected', 'true');
	}
	else if (el.hasClass('selected')) {
	el.removeClass('selected').removeAttr('aria-selected');
	}
	});
	};

	/**
	* Add/remove item to/from compose options status bar
	*/
	function compose_status(id, status)
	{
	var bar = $('#composestatusbar'), ico = bar.find('a.button.icon.' + id);

	if (!status) {
	ico.remove();
	}
	else if (!ico.length) {
	$('<a>').attr('class', 'button icon ' + id)
	.on('click', function() { show_sidebar(); })
	.appendTo(bar);
	}
	};

	/**
	* Attachment menu
	*/
	function attachmentmenu(obj, button, event)
	{
	var id = $(button).parent().attr('id').replace(/^attach/, '');

	$.each(['open', 'download', 'rename'], function() {
	var action = this;
	$('#attachmenu' + action, obj).off('click').attr('onclick', '').click(function(e) {
	rcmail.command(action + '-attachment', id, this, e.originalEvent);
	});
	});

	// call menu-open so core can set state of menu commands
	return rcmail.command('menu-open', {menu: 'attachmentmenu', id: id}, obj, event);
	};

	/**
	* Appends drop-icon to attachments list item (to invoke attachment menu)
	*/
	function attachmentmenu_append(item)
	{
	item = $(item);

	if (!item.is('.no-menu') && !item.children('.drop').length) {
	var label = rcmail.gettext('options');
	var button = $('<a>')
	.attr({
	href: '#',
	tabindex: 0,
	title: label,
	'class': 'button icon dropdown skip-content'
	})
	.on('click', function(e) {
	return attachmentmenu($('#attachmentmenu'), button, e);
	})
	.append($('<span>').attr('class', 'inner').text(label))
	.appendTo(item);
	}
	};

	/**
	* Mailto menu
	*/
	function mailtomenu(obj, button, event)
	{
	var mailto = $(button).attr('href').replace(/^mailto:/, '');

	if (mailto.indexOf('@') < 0) {
	return true; // let the browser handle this
	}

	if (rcmail.env.has_writeable_addressbook) {
	$('.addressbook', obj).addClass('active')
	.off('click').on('click', function(e) {
	var i, contact = mailto,
	txt = $(button).filter('.rcmContactAddress').text();

	contact = contact.split('?')[0].split(',')[0].replace(/(^<\|>$)/g, '');

	if (txt) {
	txt = txt.replace('<' + contact + '>', '');
	contact = '"' + $.trim(txt) + '" <' + contact + '>';
	}

	rcmail.command('add-contact', contact, this, e.originalEvent);
	});
	}

	$('.compose', obj).off('click').on('click', function(e) {
	rcmail.command('compose', mailto, this, e.originalEvent);
	});

	return rcmail.command('menu-open', {menu: 'mailto-menu', link: button}, button, event);
	};

	/**
	* Appends popup menu to mailto links
	*/
	function mailtomenu_append(item)
	{
	$(item).attr('onclick', '').on('click', function(e) {
	return mailtomenu($('#mailto-menu'), item, e);
	});
	};

	/**
	* Headers menu in mail compose
	*/
	function headersmenu(obj, button, event)
	{
	$('li > a', obj).each(function() {
	var link = $(this), target = '#compose_' + link.data('target');

	link[$(target).is(':visible') ? 'removeClass' : 'addClass']('active')
	.off().on('click', function() {
	$(target).removeClass('hidden').find('.recipient-input input').focus();
	link.removeClass('active');
	rcmail.set_menu_buttons();
	});
	});
	};

	/**
	* Reset/hide compose message recipient input
	*/
	function header_reset(id)
	{
	$('#' + id).val('').change()
	// jump to the next input
	.closest('.form-group').nextAll(':not(.hidden)').first().find('input').focus();

	$('a[data-target=' + id.replace(/^_/, '') + ']').addClass('active');
	rcmail.set_menu_buttons();
	};

	/**
	* Recipient (contact) selector
	*/
	function recipient_selector(field, opts)
	{
	if (!opts) opts = {};

	var title = rcmail.gettext(opts.title \|\| 'insertcontact'),
	dialog = $('#recipient-dialog'),
	parent = dialog.parent(),
	close_func = function() {
	if (dialog.is(':visible')) {
	rcmail.env.recipient_dialog.dialog('close');
	}
	},
	insert_func = function() {
	if (opts.action) {
	opts.action();
	close_func();
	return;
	}

	rcmail.command('add-recipient');
	};

	if (!rcmail.env.recipient_selector_initialized) {
	rcmail.addEventListener('add-recipient', close_func);
	rcmail.env.recipient_selector_initialized = true;
	}

	if (field) {
	rcmail.env.focused_field = '#_' + field;
	}

	rcmail.contact_list.clear_selection();
	rcmail.contact_list.multiselect = 'multiselect' in opts ? opts.multiselect : true;

	rcmail.env.recipient_dialog = rcmail.simple_dialog(dialog, title, insert_func, {
	button: rcmail.gettext(opts.button \|\| 'insert'),
	button_class: opts.button_class \|\| 'insert recipient',
	height: 600,
	classes: {
	'ui-dialog-content': 'p-0' // remove padding on dialog content
	},
	open: function() {
	// Don't want focus in the search field, we focus first contacts source record instead
	- $('#directorylist a:first').focus();
	+ $('#directorylist a').first().focus();
	},
	close: function() {
	dialog.appendTo(parent);
	$(this).remove();
	$(opts.focus \|\| rcmail.env.focused_field).focus();
	}
	});
	};

	/**
	* Create/Update quota widget (setquota event handler)
	*/
	function update_quota(p)
	{
	var element = $('#quotadisplay'),
	bar = element.find('.bar'),
	value = p.total ? p.percent : 0;

	if (!bar.length) {
	bar = $('<span class="bar"><span class="value"></span></span>').appendTo(element);
	}

	if (value > 0 && value < 10) {
	value = 10; // smaller values look not so nice
	}

	bar.find('.value').css('width', value + '%')[value >= 90 ? 'addClass' : 'removeClass']('warning');
	// set title and reset tooltip's data (needed in case of empty title)
	element.attr({'data-original-title': '', title: element.find('.count').attr('title')});

	if (p.table) {
	element.css('cursor', 'pointer').data('popup-pos', 'top')
	.off('click').on('click', function(e) {
	rcmail.simple_dialog(p.table, 'quota', null, {cancel_button: 'close'});
	});
	}
	else {
	element.tooltip('dispose').tooltip({trigger: is_mobile() ? 'click' : 'hover'});
	}
	};

	/**
	* Replaces recipient input with content-editable element that uses "recipient boxes"
	*/
	function recipient_input(obj)
	{
	var list, input, ac_props, update_lock,
	input_len_update = function() {
	input.css('width', Math.max(40, input.val().length * 15 + 25));
	},
	apply_func = function() {
	// update the original input
	$(obj).val(list.text() + input.val());
	},
	focus_func = function() {
	list.addClass('focus');
	},
	insert_recipient = function(name, email, replace) {
	var recipient = $('<li class="recipient">'),
	name_element = $('<span class="name">').html(recipient_input_name(name \|\| email))
	.on('dblclick', function(e) { recipient_input_edit_dialog(e, insert_recipient); }),
	email_element = $('<span class="email">'),
	// TODO: should the 'close' link have tabindex?
	link = $('<a>').attr({'class': 'button icon remove'})
	.click(function() {
	recipient.remove();
	apply_func();
	input.focus();
	return false;
	});

	if (name) {
	email = ' <' + email + '>';
	}

	email_element.text((name ? email : '') + ',');
	recipient.attr('title', name ? (name + email) : null)
	.append([name_element, email_element, link])

	if (replace)
	replace.replaceWith(recipient);
	else
	recipient.insertBefore(input.parent());
	},
	update_func = function(text) {
	var result;

	if (update_lock) {
	return;
	}

	update_lock = true;

	text = (text \|\| input.val()).replace(/[,;\s]+$/, '');
	result = recipient_input_parser(text);

	$.each(result.recipients, function() {
	insert_recipient(this.name, this.email);
	});

	// setTimeout() here is needed for proper input reset on paste event
	// This is also the reason why we need parse_lock
	setTimeout(function() {
	input.val(result.text);
	apply_func();
	input_len_update();
	update_lock = false;
	}, 1);

	return result.recipients.length > 0;
	},
	parse_func = function(e) {
	if (e.type == 'blur') {
	list.removeClass('focus');
	}

	// FIXME: This is a workaround for a bug where on a touch device
	// selecting a recipient from autocomplete list do not work because
	// of some events race condition (?)
	if (this.value.indexOf('@') < 0) {
	return;
	}

	// On paste the text is not yet in the input we have to use clipboard.
	// Also because on paste new-line characters are replaced by spaces (#6460)
	update_func(e.type == 'paste' ? (e.originalEvent.clipboardData \|\| window.clipboardData).getData('text') : null);
	},
	keydown_func = function(e) {
	// On Backspace remove the last recipient
	if (e.keyCode == 8 && !input.val().length) {
	- list.children('li.recipient:last').remove();
	+ list.children('li.recipient').first().remove();
	apply_func();
	return false;
	}
	// Here we add a recipient box when the separator (,;) or Enter was pressed
	else if (e.key == ',' \|\| e.key == ';' \|\| (e.key == 'Enter' && !rcmail.ksearch_visible())) {
	if (update_func()) {
	return false;
	}
	}

	input_len_update();
	};

	// Create the input element and "editable" area
	input = $('<input>').attr({type: 'text', tabindex: $(obj).attr('tabindex')})
	.on('paste change blur', parse_func)
	.on('input', input_len_update) // only to fix input length after paste
	.on('keydown', keydown_func)
	.on('focus mousedown', focus_func);

	list = $('<ul>').addClass('form-control recipient-input')
	.append($('<li>').append(input))
	.on('click', function() { input.focus(); });

	// Hide the original input/textarea
	// Note: we do not remove the original element, and we do not use
	// display: none, because we want to handle onfocus event
	// Note: tabindex:-1 to make Shift+TAB working on these widgets
	$(obj).css({position: 'absolute', opacity: 0, left: '-5000px', width: '10px'})
	.attr('tabindex', -1)
	.after(list)
	// some core code sometimes focuses or changes the original node
	// in such cases we wan't to parse it's value and apply changes
	// to the widget element
	.on('focus', function(e) { input.focus(); })
	.on('change', function(e) {
	$('li.recipient', list).remove();
	input.val(this.value).change();
	})
	// copy and parse the value already set
	.change();

	// this one line is here to fix border of Bootstrap's input-group,
	// input-group should not contain any hidden elements
	$(obj).detach().insertBefore(list.parent());

	if (rcmail.env.autocomplete_threads > 0) {
	ac_props = {
	threads: rcmail.env.autocomplete_threads,
	sources: rcmail.env.autocomplete_sources
	};
	}

	// Init autocompletion
	rcmail.init_address_input_events(input, ac_props);
	};

	/**
	* Parses recipient address input and extracts recipients from it
	*/
	function recipient_input_parser(text)
	{
	// support new-line as a separator, for paste action (#6460)
	text = $.trim(text.replace(/[,;\s]*[\r\n]+/g, ','));

	var recipients = [],
	address_rx_part = '(\\S+\|("[^"]+"))@\\S+',
	recipient_rx1 = new RegExp('(<' + address_rx_part + '>)'),
	recipient_rx2 = new RegExp('(' + address_rx_part + ')'),
	global_rx = /(?=\S)[^",;](?:"[^\\"](?:\\[,;\S][^\\"])"[^",;])/g,
	matches = text.match(global_rx);

	$.each(matches \|\| [], function() {
	if (this.length && (recipient_rx1.test(this) \|\| recipient_rx2.test(this))) {
	var email = RegExp.$1,
	name = $.trim(this.replace(email, ''));

	recipients.push({
	name: name,
	email: email.replace(/(^<\|>$)/g, ''),
	text: this
	});

	text = text.replace(this, '');
	}
	});

	text = text.replace(/[,;]+/, ',').replace(/^[,;\s]+/, '');

	return {recipients: recipients, text: text};
	};

	/**
	* Generates HTML for a text adding <span class="hidden">
	* for quote/backslash characters, so they are hidden from the user,
	* but still in place to make copying simpler
	*
	* Note: Selection works in Chrome, but not in Firefox?
	*/
	function recipient_input_name(text)
	{
	var i, char, result = '', len = text.length;

	if (text.charAt(0) != '"' && text.indexOf('"') > -1) {
	text = '"' + text.replace('\\', '\\\\').replace('"', '\\"') + '"';
	}

	for (i=0; i<len; i++) {
	char = text.charAt(i);
	switch (char) {
	case '"':
	if (i > 0 && i < len - 1) {
	result += '"';
	break;
	}

	result += '<span class="quotes">' + char + '</span>';
	break;

	case '\\':
	result += '<span class="quotes">' + char + '</span>';

	if (text.charAt(i+1) == '\\') {
	result += char;
	i++;
	}
	break;

	case '<':
	result += '<';
	break;

	case '>':
	result += '>';
	break;

	default:
	result += char;
	}
	}

	return result;
	};

	/**
	* Displays dialog to edit a recipient entry
	*/
	function recipient_input_edit_dialog(e, callback)
	{
	var element = $(e.target).parents('.recipient'),
	recipient = element.text().replace(/,+$/, ''),
	input = $('<input>').attr({type: 'text', size: 50}).val(recipient),
	content = $('<label>').text(rcmail.gettext('recipient')).append(input);

	rcmail.simple_dialog(content, 'recipientedit', function() {
	var result, value = input.val();
	if (value) {
	if (value != recipient) {
	result = recipient_input_parser(value);

	if (result.recipients.length != 1) {
	return false;
	}

	callback(result.recipients[0].name, result.recipients[0].email, element);
	}

	return true;
	}
	});
	};

	/**
	* Adds logic to the contact photo widget
	*/
	function image_upload_input(obj)
	{
	var reset_button = $('<a>')
	.attr({'class': 'icon button delete', href: '#', })
	.click(function(e) { rcmail.command('delete-photo', '', this, e); return false; });

	$(obj).append(reset_button).click(function() { rcmail.upload_input('upload-form'); });

	$('img', obj).on('load', function() {
	// FIXME: will that work in IE?
	var state = (this.currentSrc \|\| this.src).indexOf(rcmail.env.photo_placeholder) != -1;
	$(obj)[state ? 'removeClass' : 'addClass']('changed');
	});
	};

	/**
	* Displays loading... overlay for iframes
	*/
	function iframe_loader(frame)
	{
	frame = $(frame);

	if (frame.length) {
	var loader = $('<div class="iframe-loader">')
	.append($('<div class="spinner spinner-border" role="status">')
	.append($('<span class="sr-only">').text(rcmail.gettext('loading'))));

	// custom 'loaded' event is expected to be triggered by plugins
	// when using the loader not on an iframe
	frame.on('load error loaded', function() {
	// wait some time to make sure the iframe stopped loading
	setTimeout(function() { loader.remove(); }, 500);
	})
	.parent().append(loader);

	// fix scrolling in iOS
	if (ios) {
	frame.parent().addClass('ios-scroll');
	}
	}
	};

	/**
	* Convert checkbox input into Bootstrap's custom switch
	*/
	function pretty_checkbox(checkbox)
	{
	var label, parent, id, checkbox = $(checkbox);

	if (checkbox.is('.custom-control-input')) {
	return;
	}

	if (!(id = checkbox.attr('id'))) {
	id = 'icochk' + (++env.checkboxes);
	checkbox.attr('id', id);
	}

	if (checkbox.parent().is('label')) {
	label = checkbox.parent();
	checkbox = checkbox.detach();
	label.before(checkbox);
	}
	else {
	label = $('<label>');
	}

	label.attr({'for': id, 'class': 'custom-control-label', title: checkbox.attr('title') \|\| ''})
	.on('click', function(e) { e.stopPropagation(); });

	checkbox.addClass('form-check-input custom-control-input')
	.wrap('<div class="custom-control custom-switch">')
	.parent().append(label);
	};

	/**
	* Make select dropdowns pretty
	* TODO: searching, optgroup, [multiple], iPhone/iPad
	*/
	function pretty_select(select)
	{
	// iPhone is not supported yet (problem with browser dropdown on focus)
	if (bw.iphone \|\| bw.ipad) {
	return;
	}

	select = $(select);

	if (select.is('.pretty-select')) {
	return;
	}

	var select_ident = 'select' + select.attr('id') + select.attr('name');
	var is_menu_open = function() {
	// Use proper window in cases when the select element intialized
	// inside an iframe is then used in a dialog inside a parent's window
	// For some reason we can't access data-button property in cross-window
	// case, we use data-ident attribute instead
	var win = select[0].ownerDocument.defaultView;
	if (win.$('.select-menu .listing').data('ident') == select_ident) {
	return true;
	}
	};

	var close_func = function() {
	var open = is_menu_open();
	select.popover('dispose').focus();
	return !open;
	};

	var open_func = function(e) {
	var items = [],
	dialog = select.closest('.ui-dialog')[0],
	max_height = $(document.body).height() - 75,
	max_width = $(document.body).width() - 20,
	min_width = Math.min(select.outerWidth(), max_width),
	value = select.val();

	if (!is_mobile()) {
	max_height *= 0.5;
	}

	// close other popups
	popups_close(e);

	$('option', select).each(function() {
	var label = $(this).text(),
	link = $('<a href="#">')
	.data('value', this.value)
	.addClass(this.disabled ? 'disabled' : 'active' + (this.value == value ? ' selected' : ''));

	if (label.length) {
	link.text(label);
	}
	else {
	link.html(' '); // link can't be empty
	}

	items.push($('<li>').append(link));
	});

	var list = $('<ul class="toolbarmenu listing selectable iconized">')
	.attr('data-ident', select_ident)
	.data('button', select[0])
	.append(items)
	.on('click', 'a.active', function() {
	// first close the list, then update the select, the order is important
	// for cases when the select might be removed in change event (datepicker)
	var val = $(this).data('value'), ret = close_func();
	select.val(val).change();
	return ret;
	})
	.on('keydown', 'a.active', function(e) {
	var item, node, mode = 'next';

	switch (e.which) {
	case 27: // ESC
	case 9: // TAB
	return close_func();

	case 13: // ENTER
	case 32: // SPACE
	$(this).click();
	return false; // for IE

	case 38: // ARROW-UP
	case 63232:
	mode = 'previous';
	case 40: // ARROW-DOWN
	case 63233:
	item = e.target.parentNode;
	while (item = item[mode + 'Sibling']) {
	if (node = $(item).children('.active')[0]) {
	node.focus();
	break;
	}
	}
	return false; // prevents from scrolling the whole page
	}
	});

	select.popover('dispose')
	.popover({
	// because of focus issues we can't always use body,
	// if select is in a dialog, popover has to be a child of this dialog
	container: dialog \|\| document.body,
	content: list[0],
	placement: 'bottom',
	trigger: 'manual',
	boundary: 'viewport',
	html: true,
	offset: '0,2',
	sanitize: false,
	template: '<div class="popover select-menu" style="min-width: ' + min_width + 'px; max-width: ' + max_width + 'px">'
	+ '<div class="popover-header"></div>'
	+ '<div class="popover-body" style="max-height: ' + max_height + 'px"></div></div>'
	})
	.on('shown.bs.popover', function() {
	select.focus(); // for Chrome
	// Set popup Close title
	list.parent().prev()
	.empty()
	.append($('<a class="button icon cancel">').text(rcmail.gettext('close'))
	.on('click', function(e) {
	e.stopPropagation();
	return close_func();
	})
	);

	// focus first active element on the list
	if (rcube_event.is_keyboard(e)) {
	- list.find('a.active:first').focus();
	+ list.find('a.active').first().focus();
	}

	// don't propagate mousedown event
	list.on('mousedown', function(e) { e.stopPropagation(); });
	})
	.popover('show');
	};

	select.addClass('pretty-select custom-select form-control')
	.on('mousedown keydown', function(e) {
	select = $(e.target); // so it works after clone

	// Do nothing on disabled select or on TAB key
	if (select.prop('disabled')) {
	return;
	}

	if (e.which == 9) {
	close_func();
	return true;
	}

	// Close popup on ESC key or on click if already open
	if (e.which == 27 \|\| (e.type == 'mousedown' && is_menu_open())) {
	return close_func();
	}

	select.focus();

	// prevent displaying browser-default select dropdown
	select.prop('disabled', true);
	setTimeout(function() { select.prop('disabled', false); }, 0);
	e.stopPropagation();

	// display options in our way (on SPACE, ENTER, ARROW-DOWN or mousedown)
	if (e.type == 'mousedown' \|\| e.which == 13 \|\| e.which == 32 \|\| e.which == 40 \|\| e.which == 63233) {
	open_func(e);

	// Prevent from closing the menu by general popover closing handler (popups_close())
	// We used to just stop propagation in onclick handler, but it didn't work
	// in Chrome where onclick handler wasn't invoked on mobile (#6705)
	popups_close_lock = new Date().getTime();

	return false;
	}
	})
	};

	/**
	* HTML editor textarea wrapper with nice looking tabs-like switch
	*/
	function html_editor_init(obj)
	{
	// Here we support two structures
	// 1. <div><textarea></textarea><select name="editorSelector"></div>
	// 2. <tr><td><td><td><textarea></textarea></td></tr>
	// <tr><td><td><td><input type="checkbox"></td></tr>

	var sw, is_table = false,
	editor = $(obj),
	parent = editor.parent(),
	tabindex = editor.attr('tabindex'),
	mode = function() {
	if (is_table) {
	return sw.is(':checked') ? 'html' : 'plain';
	}

	return sw.val();
	},
	tabs = $('<ul class="nav nav-tabs">')
	.append($('<li class="nav-item">')
	.append($('<a class="nav-link mode-html" href="#">')
	.text(rcmail.gettext('htmltoggle'))))
	.append($('<li class="nav-item">')
	.append($('<a class="nav-link mode-plain" href="#">')
	.text(rcmail.gettext('plaintoggle'))));

	if (parent.is('td')) {
	sw = $('input[type="checkbox"]', parent.parent().next());
	is_table = true;
	}
	else {
	sw = $('[name="editorSelector"]', obj.form);
	}

	// sanity check
	if (sw.length != 1) {
	return;
	}

	parent.addClass('html-editor');
	editor.before(tabs);

	$('a', tabs).attr('tabindex', tabindex)
	.on('click', function(e) {
	var id = editor.attr('id'), is_html = $(this).is('.mode-html');

	e.preventDefault();
	if (rcmail.command('toggle-editor', {id: id, html: is_html}, '', e.originalEvent)) {
	$(this).tab('show').prop('tabindex', -1);
	$('.mode-' + (is_html ? 'plain' : 'html'), tabs).prop('tabindex', tabindex);

	if (is_table) {
	sw.prop('checked', is_html);
	}
	}
	})
	.filter('.mode-' + mode()).tab('show').prop('tabindex', -1);

	if (is_table) {
	// Hide unwanted table cells
	sw.parents('tr').first().hide();
	parent.prev().hide();
	// Modify the textarea cell to use 100% width
	parent.addClass('col-sm-12');
	}

	// make the textarea autoresizeable
	textarea_autoresize_init(editor);
	};

	/**
	* Make the textarea autoresizeable depending on it's content length.
	* The way there's no vertical scrollbar.
	*/
	function textarea_autoresize_init(textarea)
	{
	var resize = function(e) {
	clearTimeout(env.textarea_timer);
	env.textarea_timer = setTimeout(function() {
	var area = $(e.target),
	initial_height = area.data('initial-height'),
	scroll_height = area[0].scrollHeight;

	// do nothing when the area is hidden
	if (!scroll_height) {
	return;
	}

	if (!initial_height) {
	area.data('initial-height', initial_height = scroll_height);
	}

	// strange effect in Chrome/Firefox when you delete a line in the textarea
	// the scrollHeight is not decreased by the line height, but by 2px
	// so jumps up many times in small steps, we'd rather use one big step
	if (area.outerHeight() - scroll_height == 2) {
	scroll_height -= 19; // 21px is the assumed line height
	}

	area.outerHeight(Math.max(initial_height, scroll_height));
	}, 10);
	};

	$(textarea).css('overflow-y', 'hidden').on('input', resize).trigger('input');

	// Make sure the height is up-to-date also in time intervals
	setInterval(function() { $(textarea).trigger('input'); }, 1000);
	};

	// Inititalizes smart list input
	function smart_field_init(field)
	{
	var tip, id = field.id + '_list',
	area = $('<div class="multi-input"><div class="content"></div><div class="invalid-feedback"></div></div>'),
	list = field.value ? field.value.split("\n") : [''];

	if ($('#' + id).length) {
	return;
	}

	// add input rows
	$.each(list, function(i, v) {
	smart_field_row_add($('.content', area), v, field.name, i, $(field).data('size'));
	});

	area.attr('id', id);
	field = $(field);

	if (field.attr('disabled')) {
	area.hide();
	}
	// disable the original field anyway, we don't want it in POST
	else {
	field.prop('disabled', true);
	}

	if (field.data('hidden')) {
	area.hide();
	}

	field.after(area);

	if (field.hasClass('is-invalid')) {
	area.addClass('is-invalid');
	$('.invalid-feedback', area).text(field.data('error-msg'));
	}
	};

	function smart_field_row_add(area, value, name, idx, size, after)
	{
	// build row element content
	var input, elem = $('<div class="input-group">'
	+ '<input type="text" class="form-control">'
	+ '<span class="input-group-append"><a class="icon reset input-group-text" href="#"></a></span>'
	+ '</div>'),
	attrs = {value: value, name: name + '[]'};

	if (size) {
	attrs.size = size;
	}

	input = $('input', elem).attr(attrs)
	.keydown(function(e) {
	var input = $(this);

	// element creation event (on Enter)
	if (e.which == 13) {
	var name = input.attr('name').replace(/\[\]$/, ''),
	dt = (new Date()).getTime(),
	elem = smart_field_row_add(area, '', name, dt, size, input.parent());

	$('input', elem).focus();
	}
	// backspace or delete: remove input, focus previous one
	else if ((e.which == 8 \|\| e.which == 46) && input.val() == '') {
	var parent = input.parent(),
	siblings = area.children();

	if (siblings.length > 1) {
	if (parent.prev().length) {
	parent.prev().children('input').focus();
	}
	else {
	parent.next().children('input').focus();
	}

	parent.remove();
	return false;
	}
	}
	});

	// element deletion event
	$('a.reset', elem).click(function() {
	var record = $(this.parentNode.parentNode);

	if (area.children().length > 1) {
	$('input', record.next().length ? record.next() : record.prev()).focus();
	record.remove();
	}
	else {
	$('input', record).val('').focus();
	}
	});

	$(elem).find('input,a')
	.on('focus', function() { area.addClass('focused'); })
	.on('blur', function() { area.removeClass('focused'); });

	if (after) {
	after.after(elem);
	}
	else {
	elem.appendTo(area);
	}

	return elem;
	};

	// Reset and fill the smart list input with new data
	function smart_field_reset(field, data)
	{
	var id = field.id + '_list',
	list = data.length ? data : [''],
	area = $('#' + id).children('.content');

	area.empty();

	// add input rows
	$.each(list, function(i, v) {
	smart_field_row_add(area, v, field.name, i, $(field).data('size'));
	});
	};

	/**
	* Register form errors, mark fields as invalid, dsplay the error below the input
	*/
	function form_errors(tips)
	{
	$.each(tips, function() {
	var input = $('#' + this[0]).addClass('is-invalid');

	if (input.data('type') == 'list') {
	input.data('error-msg', this[2]);
	$('#' + this[0] + '_list > .invalid-feedback').text(this[2]);
	return;
	}

	input.after($('<span class="invalid-feedback">').text(this[2]));
	});
	};

	/**
	* Show/hide the navigation list
	*/
	function switch_nav_list(obj)
	{
	var records, height, speed = 250,
	button = $('a.button', obj),
	navlist = $(obj).next();

	if (!navlist.height()) {
	records = $('tr,li', navlist).filter(function() { return this.style.display != 'none'; });
	height = $(records[0]).height() \|\| 50;

	navlist.animate({height: (Math.min(5, records.length) * height + 1) + 'px'}, speed);
	button.addClass('collapse').removeClass('expand');
	$(obj).addClass('expanded');
	}
	else {
	navlist.animate({height: '0'}, speed);
	button.addClass('expand').removeClass('collapse');
	$(obj).removeClass('expanded');
	}
	};

	/**
	* Wrapper for rcmail.open_window to intercept window opening
	* and display a dialog with an iframe instead of a real window.
	*/
	function window_open(url)
	{
	// Use 4th argument to bypass the dialog-mode e.g. for external windows
	if (!is_mobile() \|\| arguments[3] === true) {
	return env.open_window.apply(rcmail, arguments);
	}

	// _extwin=1, _framed=1 are required to display attachment preview
	// layout properly and make mobile menus working
	url = rcmail.add_url(url, '_framed', 1);
	url = rcmail.add_url(url, '_extwin', 1);

	var label, title = '',
	props = {cancel_button: 'close', width: 768, height: 768},
	frame = $('<iframe>').attr({id: 'windowframe', src: url});

	if (/_action=([a-z_]+)/.test(url) && (label = rcmail.labels[RegExp.$1])) {
	title = label;
	}

	if (/_frame=1/.test(url)) {
	props.dialogClass = 'no-titlebar';
	}

	rcmail.simple_dialog(frame, title, null, props);

	return true;
	};

	/**
	* Get layout modes. In frame mode returns the parent layout modes.
	*/
	function layout_metadata()
	{
	if (is_framed) {
	var doc = $(parent.document.documentElement);

	return {
	mode: doc[0].className.match(/layout-([a-z]+)/) ? RegExp.$1 : mode,
	touch: doc.is('.touch'),
	};
	}

	return {mode: mode, touch: touch};
	};

	/**
	* Returns true if the layout is in 'small' or 'phone' mode
	*/
	function is_mobile()
	{
	var meta = layout_metadata();

	return meta.mode == 'phone' \|\| meta.mode == 'small';
	};

	/**
	* Returns true if the layout is in 'touch' mode
	*/
	function is_touch()
	{
	var meta = layout_metadata();

	return meta.touch;
	};
	}

	if (window.rcmail) {
	/**
	* Elastic version of show_menu as we don't need e.g. menu positioning from core
	* TODO: keyboard navigation in menus
	*/
	rcmail.show_menu = function(prop, show, event)
	{
	var name = typeof prop == 'object' ? prop.menu : prop,
	obj = $('#' + name);

	if (typeof prop == 'string') {
	prop = {menu: name};
	}

	// just delegate the action to rcube_elastic_ui
	return rcmail.triggerEvent(show === false ? 'menu-close' : 'menu-open', {name: name, obj: obj, props: prop, originalEvent: event});
	}

	/**
	* Elastic version of hide_menu as we don't need e.g. menus stack handling
	*/
	rcmail.hide_menu = function(name, event)
	{
	// delegate to rcube_elastic_ui
	return rcmail.triggerEvent('menu-close', {name: name, props: {menu: name}, originalEvent: event});
	}
	}
	else {
	// rcmail does not exists e.g. on the error template inside a frame
	// we fake the engine a little
	var rcmail = parent.rcmail,
	rcube_webmail = parent.rcube_webmail,
	bw = {};
	}

	var UI = new rcube_elastic_ui();

	// Improve non-inline datepickers
	if ($ && $.datepicker) {
	var __newInst = $.datepicker._newInst;

	$.extend($.datepicker, {
	_newInst: function(target, inline) {
	var inst = __newInst.call(this, target, inline);

	if (!inst.inline) {
	UI.datepicker_init(inst.dpDiv);
	}

	return inst;
	}
	});
	}

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