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	diff --git a/program/js/app.js b/program/js/app.js
	index 13711ff97..620126cde 100644
	--- a/program/js/app.js
	+++ b/program/js/app.js
	@@ -1,5334 +1,5335 @@
	/*
	+-----------------------------------------------------------------------+
	\| Roundcube Webmail Client Script \|
	\| \|
	\| This file is part of the Roundcube Webmail client \|
	\| Copyright (C) 2005-2010, Roundcube Dev, - Switzerland \|
	\| Licensed under the GNU GPL \|
	\| \|
	+-----------------------------------------------------------------------+
	\| Authors: Thomas Bruederli <roundcube@gmail.com> \|
	\| Aleksander 'A.L.E.C' Machniak <alec@alec.pl> \|
	\| Charles McNulty <charles@charlesmcnulty.com> \|
	+-----------------------------------------------------------------------+
	\| Requires: jquery.js, common.js, list.js \|
	+-----------------------------------------------------------------------+

	$Id$
	*/


	function rcube_webmail()
	{
	this.env = {};
	this.labels = {};
	this.buttons = {};
	this.buttons_sel = {};
	this.gui_objects = {};
	this.gui_containers = {};
	this.commands = {};
	this.command_handlers = {};
	this.onloads = [];
	this.messages = {};

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

	// webmail client settings
	this.dblclick_time = 500;
	this.message_time = 3000;

	this.identifier_expr = new RegExp('[^0-9a-z\-_]', 'gi');

	// mimetypes supported by the browser (default settings)
	this.mimetypes = new Array('text/plain', 'text/html', 'text/xml',
	'image/jpeg', 'image/gif', 'image/png',
	'application/x-javascript', 'application/pdf', 'application/x-shockwave-flash');

	// default environment vars
	this.env.keep_alive = 60; // seconds
	this.env.request_timeout = 180; // seconds
	this.env.draft_autosave = 0; // seconds
	this.env.comm_path = './';
	this.env.blankpage = 'program/blank.gif';

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

	// 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(key, value)
	{
	this.labels[key] = value;
	};

	// add a button to the button list
	this.register_button = function(command, id, type, act, sel, over)
	{
	if (!this.buttons[command])
	this.buttons[command] = [];

	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;

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

	// register a specific gui object
	this.gui_object = function(name, id)
	{
	this.gui_objects[name] = 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 p = this;
	this.task = this.env.task;

	// check browser
	if (!bw.dom \|\| !bw.xmlhttp_test()) {
	this.goto_url('error', '_code=0x199');
	return;
	}

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

	// find all registered gui objects
	for (var 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.env.framed && parent.rcmail && parent.rcmail.set_busy) {
	parent.rcmail.set_busy(false, null, parent.rcmail.env.frame_lock);
	parent.rcmail.env.frame_lock = null;
	}

	// enable general commands
	this.enable_command('logout', 'mail', 'addressbook', 'settings', true);

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

	switch (this.task) {

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

	if (this.gui_objects.messagelist) {

	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.row_init = function(o){ p.init_message_row(o); };
	this.message_list.addEventListener('dblclick', function(o){ p.msglist_dbl_click(o); });
	this.message_list.addEventListener('click', function(o){ p.msglist_click(o); });
	this.message_list.addEventListener('keypress', function(o){ p.msglist_keypress(o); });
	this.message_list.addEventListener('select', function(o){ p.msglist_select(o); });
	this.message_list.addEventListener('dragstart', function(o){ p.drag_start(o); });
	this.message_list.addEventListener('dragmove', function(e){ p.drag_move(e); });
	this.message_list.addEventListener('dragend', function(e){ p.drag_end(e); });
	this.message_list.addEventListener('expandcollapse', function(e){ p.msglist_expand(e); });
	this.message_list.addEventListener('column_replace', function(e){ p.msglist_set_coltypes(e); });

	document.onmouseup = function(e){ return p.doc_mouse_up(e); };
	this.gui_objects.messagelist.parentNode.onmousedown = function(e){ return p.click_on_list(e); };

	this.message_list.init();
	this.enable_command('toggle_status', 'toggle_flag', 'menu-open', 'menu-save', true);

	// load messages
	this.command('list');
	}

	if (this.gui_objects.qsearchbox) {
	if (this.env.search_text != null) {
	this.gui_objects.qsearchbox.value = this.env.search_text;
	}
	$(this.gui_objects.qsearchbox).focusin(function() { rcmail.message_list.blur(); });
	}

	if (this.env.trash_mailbox && this.env.mailbox != this.env.trash_mailbox)
	this.set_alttext('delete', 'movemessagetotrash');

	this.env.message_commands = ['show', 'reply', 'reply-all', 'reply-list', 'forward',
	'moveto', 'copy', 'delete', 'open', 'mark', 'edit', 'viewsource', 'download',
	'print', 'load-attachment', 'load-headers'];

	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='+urlencode(this.env.mailbox),
	this.display_message('', 'loading'));
	}

	if (this.env.blockedobjects) {
	if (this.gui_objects.remoteobjectsmsg)
	this.gui_objects.remoteobjectsmsg.style.display = 'block';
	this.enable_command('load-images', 'always-load', true);
	}

	// make preview/message frame visible
	if (this.env.action == 'preview' && this.env.framed && parent.rcmail) {
	this.enable_command('compose', 'add-contact', false);
	parent.rcmail.show_contentframe(true);
	}
	}
	else if (this.env.action == 'compose') {
	this.env.compose_commands = ['send-attachment', 'remove-attachment', 'send', 'toggle-editor'];

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

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

	if (this.env.spellcheck) {
	this.env.spellcheck.spelling_state_observer = function(s){ ref.set_spellcheck_state(s); };
	this.env.compose_commands.push('spellcheck')
	this.set_spellcheck_state('ready');
	if ($("input[name='_is_html']").val() == '1')
	this.display_spellcheck_controls(false);
	}

	document.onmouseup = function(e){ return p.doc_mouse_up(e); };

	// init message compose form
	this.init_messageform();
	}
	// show printing dialog
	else if (this.env.action == 'print' && this.env.uid)
	window.print();

	// 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', '');
	}

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

	break;


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

	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.row_init = function(row){ p.triggerEvent('insertrow', { cid:row.uid, row:row }); };
	this.contact_list.addEventListener('keypress', function(o){ p.contactlist_keypress(o); });
	this.contact_list.addEventListener('select', function(o){ p.contactlist_select(o); });
	this.contact_list.addEventListener('dragstart', function(o){ p.drag_start(o); });
	this.contact_list.addEventListener('dragmove', function(e){ p.drag_move(e); });
	this.contact_list.addEventListener('dragend', function(e){ p.drag_end(e); });
	this.contact_list.init();

	if (this.env.cid)
	this.contact_list.highlight_row(this.env.cid);

	this.gui_objects.contactslist.parentNode.onmousedown = function(e){ return p.click_on_list(e); };
	document.onmouseup = function(e){ return p.doc_mouse_up(e); };
	if (this.gui_objects.qsearchbox) {
	$(this.gui_objects.qsearchbox).focusin(function() { rcmail.contact_list.blur(); });
	}
	}

	this.set_page_buttons();

	if (this.env.address_sources && this.env.address_sources[this.env.source] && !this.env.address_sources[this.env.source].readonly) {
	this.enable_command('add', 'import', true);
	this.enable_command('group-create', this.env.address_sources[this.env.source].groups);
	}

	if (this.env.cid) {
	this.enable_command('show', 'edit', true);
	// register handlers for group assignment via checkboxes
	if (this.gui_objects.editform) {
	$('input.groupmember').change(function(){
	var cmd = this.checked ? 'group-addmembers' : 'group-delmembers';
	ref.http_post(cmd, '_cid='+urlencode(ref.env.cid)
	+ '&_source='+urlencode(ref.env.source)
	+ '&_gid='+urlencode(this.value));
	});
	}
	}

	if ((this.env.action=='add' \|\| this.env.action=='edit') && this.gui_objects.editform) {
	this.enable_command('save', true);
	$("input[type='text']").first().select();
	}
	else if (this.gui_objects.qsearchbox) {
	this.enable_command('search', 'reset-search', 'moveto', true);
	$(this.gui_objects.qsearchbox).select();
	}

	if (this.contact_list && this.contact_list.rowcount > 0)
	this.enable_command('export', true);

	this.enable_command('list', 'listgroup', true);
	break;


	case 'settings':
	this.enable_command('preferences', 'identities', 'save', 'folders', 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('add', this.env.identities_level < 2);
	this.enable_command('save', 'delete', 'edit', 'toggle-editor', true);
	}
	else if (this.env.action=='folders')
	this.enable_command('subscribe', 'unsubscribe', 'create-folder', 'rename-folder', 'delete-folder', 'enable-threading', 'disable-threading', true);

	if (this.gui_objects.identitieslist) {
	this.identity_list = new rcube_list_widget(this.gui_objects.identitieslist, {multiselect:false, draggable:false, keyboard:false});
	this.identity_list.addEventListener('select', function(o){ p.identity_select(o); });
	this.identity_list.init();
	this.identity_list.focus();

	if (this.env.iid)
	this.identity_list.highlight_row(this.env.iid);
	}
	else if (this.gui_objects.sectionslist) {
	this.sections_list = new rcube_list_widget(this.gui_objects.sectionslist, {multiselect:false, draggable:false, keyboard:false});
	this.sections_list.addEventListener('select', function(o){ p.section_select(o); });
	this.sections_list.init();
	this.sections_list.focus();
	}
	else if (this.gui_objects.subscriptionlist)
	this.init_subscription_list();

	break;

	case 'login':
	var input_user = $('#rcmloginuser');
	input_user.bind('keyup', function(e){ return rcmail.login_user_keyup(e); });

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

	// detect client timezone
	$('#rcmlogintz').val(new Date().getTimezoneOffset() / -60);

	// display 'loading' message on form submit
	$('form').submit(function () {
	rcmail.display_message(rcmail.get_label('loading'), 'loading');
	});

	this.enable_command('login', true);
	break;

	default:
	break;
	}

	// flag object as complete
	this.loaded = true;

	// show message
	if (this.pending_message)
	this.display_message(this.pending_message[0], this.pending_message[1]);

	// map implicit containers
	if (this.gui_objects.folderlist)
	this.gui_containers.foldertray = $(this.gui_objects.folderlist);

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

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

	// start keep-alive interval
	this.start_keepalive();
	};


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

	// execute a specific command on the web client
	this.command = function(command, props, obj)
	{
	if (obj && obj.blur)
	obj.blur();

	if (this.busy)
	return false;

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

	return false;
	}

	// check input before leaving compose step
	if (this.task=='mail' && this.env.action=='compose' && $.inArray(command, this.env.compose_commands)<0) {
	if (this.cmp_hash != this.compose_field_hash() && !confirm(this.get_label('notsentwarning')))
	return false;
	}

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

	// trigger plugin hooks
	this.triggerEvent('actionbefore', {props:props, action:command});
	var event_ret = this.triggerEvent('before'+command, props);
	if (typeof event_ret != 'undefined') {
	// abort if one the handlers returned false
	if (event_ret === false)
	return false;
	else
	props = event_ret;
	}

	// process internal command
	switch (command) {

	case 'login':
	if (this.gui_objects.loginform)
	this.gui_objects.loginform.submit();
	break;

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

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

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

	case 'open':
	var uid;
	if (uid = this.get_single_uid()) {
	obj.href = '?_task='+this.env.task+'&_action=show&_mbox='+urlencode(this.env.mailbox)+'&_uid='+uid;
	return true;
	}
	break;

	case 'list':
	if (this.task=='mail') {
	if (!this.env.search_request \|\| (props && props != this.env.mailbox))
	this.reset_qsearch();

	this.list_mailbox(props);

	if (this.env.trash_mailbox)
	this.set_alttext('delete', this.env.mailbox != this.env.trash_mailbox ? 'movemessagetotrash' : 'deletemessage');
	}
	else if (this.task=='addressbook') {
	if (!this.env.search_request \|\| (props != this.env.source))
	this.reset_qsearch();

	this.list_contacts(props);
	this.enable_command('add', 'import', (this.env.address_sources && !this.env.address_sources[this.env.source].readonly));
	}
	break;

	case 'load-headers':
	this.load_headers(obj);
	break;

	case 'sort':
	var sort_order, sort_col = props;

	if (this.env.sort_col==sort_col)
	sort_order = this.env.sort_order=='ASC' ? 'DESC' : 'ASC';
	else
	sort_order = '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.messagecount)
	this.expunge_mailbox(this.env.mailbox);
	break;

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

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

	case 'add':
	if (this.task=='addressbook')
	this.load_contact(0, 'add');
	else if (this.task=='settings') {
	this.identity_list.clear_selection();
	this.load_identity(0, 'add-identity');
	}
	break;

	case 'edit':
	var cid;
	if (this.task=='addressbook' && (cid = this.get_single_cid()))
	this.load_contact(cid, 'edit');
	else if (this.task=='settings' && props)
	this.load_identity(props, 'edit-identity');
	else if (this.task=='mail' && (cid = this.get_single_uid())) {
	var url = (this.env.mailbox == this.env.drafts_mailbox) ? '_draft_uid=' : '_uid=';
	this.goto_url('compose', url+cid+'&_mbox='+urlencode(this.env.mailbox), true);
	}
	break;

	case 'save':
	if (this.gui_objects.editform) {
	var input_pagesize = $("input[name='_pagesize']");
	var input_name = $("input[name='_name']");
	var input_email = $("input[name='_email']");

	// user prefs
	if (input_pagesize.length && isNaN(parseInt(input_pagesize.val()))) {
	alert(this.get_label('nopagesizewarning'));
	input_pagesize.focus();
	break;
	}
	// contacts/identities
	else {
	if (input_name.length && input_name.val() == '') {
	alert(this.get_label('nonamewarning'));
	input_name.focus();
	break;
	}
	else if (input_email.length && !rcube_check_email(input_email.val())) {
	alert(this.get_label('noemailwarning'));
	input_email.focus();
	break;
	}
	}

	this.gui_objects.editform.submit();
	}
	break;

	case 'delete':
	// mail task
	if (this.task=='mail')
	this.delete_messages();
	// addressbook task
	else if (this.task=='addressbook')
	this.delete_contacts();
	// user settings task
	else if (this.task=='settings')
	this.delete_identity();
	break;

	// mail task commands
	case 'move':
	case 'moveto':
	if (this.task == 'mail')
	this.move_messages(props);
	else if (this.task == 'addressbook' && this.drag_active)
	this.copy_contact(null, props);
	break;

	case 'copy':
	if (this.task == 'mail')
	this.copy_messages(props);
	break;

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

	case 'toggle_status':
	if (props && !props._row)
	break;

	var uid, flag = 'read';

	if (props._row.uid) {
	uid = props._row.uid;

	// toggle read/unread
	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 'toggle_flag':
	if (props && !props._row)
	break;

	var uid, flag = 'flagged';

	if (props._row.uid) {
	uid = props._row.uid;
	// toggle flagged/unflagged
	if (this.message_list.rows[uid].flagged)
	flag = 'unflagged';
	}
	this.mark_message(flag, uid);
	break;

	case 'always-load':
	if (this.env.uid && this.env.sender) {
	this.add_contact(urlencode(this.env.sender));
	window.setTimeout(function(){ ref.command('load-images'); }, 300);
	break;
	}

	case 'load-images':
	if (this.env.uid)
	this.show_message(this.env.uid, true, this.env.action=='preview');
	break;

	case 'load-attachment':
	var qstring = '_mbox='+urlencode(this.env.mailbox)+'&_uid='+this.env.uid+'&_part='+props.part;

	// open attachment in frame if it's of a supported mimetype
	if (this.env.uid && props.mimetype && $.inArray(props.mimetype, this.mimetypes)>=0) {
	if (props.mimetype == 'text/html')
	qstring += '&_safe=1';
	this.attachment_win = window.open(this.env.comm_path+'&_action=get&'+qstring+'&_frame=1', 'rcubemailattachment');
	if (this.attachment_win) {
	window.setTimeout(function(){ ref.attachment_win.focus(); }, 10);
	break;
	}
	}

	this.goto_url('get', qstring+'&_download=1', false);
	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
	if (props == 'invert')
	this.message_list.invert_selection();
	else
	this.message_list.select_all(props == 'page' ? '' : props);
	this.dummy_select = null;
	break;

	case 'select-none':
	this.select_all_mode = false;
	this.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 'checkmail':
	this.check_for_recent(true);
	break;

	case 'compose':
	var url = this.env.comm_path+'&_action=compose';

	if (this.task=='mail') {
	url += '&_mbox='+urlencode(this.env.mailbox);

	if (this.env.mailbox==this.env.drafts_mailbox) {
	var uid;
	if (uid = this.get_single_uid())
	url += '&_draft_uid='+uid;
	}
	else if (props)
	url += '&_to='+urlencode(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 = this.get_task_url('mail', url);
	this.redirect(url + '&_to='+urlencode(props));
	break;
	}

	// use contact_id passed as command parameter
	var a_cids = [];
	if (props)
	a_cids.push(props);
	// get selected contacts
	else if (this.contact_list) {
	var selection = this.contact_list.get_selection();
	for (var n=0; n<selection.length; n++)
	a_cids.push(selection[n]);
	}

	if (a_cids.length)
	this.http_request('mailto', '_cid='+urlencode(a_cids.join(','))+'&_source='+urlencode(this.env.source), true);

	break;
	}

	// don't know if this is necessary...
	url = url.replace(/&_framed=1/, '');

	this.redirect(url);
	break;

	case 'spellcheck':
	if (window.tinyMCE && tinyMCE.get(this.env.composebody)) {
	tinyMCE.execCommand('mceSpellCheck', true);
	}
	else if (this.env.spellcheck && this.env.spellcheck.spellCheck && this.spellcheck_ready) {
	this.env.spellcheck.spellCheck();
	this.set_spellcheck_state('checking');
	}
	break;

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

	if (!this.gui_objects.messageform)
	break;

	// if saving Drafts is disabled in main.inc.php
	// or if compose form did not change
	if (!this.env.drafts_mailbox \|\| this.cmp_hash == this.compose_field_hash())
	break;

	var form = this.gui_objects.messageform,
	msgid = this.set_busy(true, 'savingmessage');

	form.target = "savetarget";
	form._draft.value = '1';
	form.action = this.add_url(form.action, '_unlock', msgid);
	form.submit();
	break;

	case 'send':
	if (!this.gui_objects.messageform)
	break;

	if (!this.check_compose_input())
	break;

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

	// all checks passed, send message
	var form = this.gui_objects.messageform,
	msgid = this.set_busy(true, 'sendingmessage');

	form.target = 'savetarget';
	form._draft.value = '';
	form.action = this.add_url(form.action, '_unlock', msgid);
	form.submit();

	// clear timeout (sending could take longer)
	clearTimeout(this.request_timer);
	break;

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

	this.upload_file(props)
	break;

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

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

	this.goto_url('compose', url, true);
	}
	break;

	case 'forward':
	var uid;
	if (uid = this.get_single_uid())
	this.goto_url('compose', '_forward_uid='+uid+'&_mbox='+urlencode(this.env.mailbox), true);
	break;

	case 'print':
	var uid;
	if (uid = this.get_single_uid()) {
	ref.printwin = window.open(this.env.comm_path+'&_action=print&_uid='+uid+'&_mbox='+urlencode(this.env.mailbox)+(this.env.safemode ? '&_safe=1' : ''));
	if (this.printwin) {
	window.setTimeout(function(){ ref.printwin.focus(); }, 20);
	if (this.env.action != 'show')
	this.mark_message('read', uid);
	}
	}
	break;

	case 'viewsource':
	var uid;
	if (uid = this.get_single_uid()) {
	ref.sourcewin = window.open(this.env.comm_path+'&_action=viewsource&_uid='+uid+'&_mbox='+urlencode(this.env.mailbox));
	if (this.sourcewin)
	window.setTimeout(function(){ ref.sourcewin.focus(); }, 20);
	}
	break;

	case 'download':
	var uid;
	if (uid = this.get_single_uid())
	this.goto_url('viewsource', '&_uid='+uid+'&_mbox='+urlencode(this.env.mailbox)+'&_save=1');
	break;

	// quicksearch
	case 'search':
	if (!props && this.gui_objects.qsearchbox)
	props = this.gui_objects.qsearchbox.value;
	if (props) {
	this.qsearch(props);
	break;
	}

	// reset quicksearch
	case 'reset-search':
	var s = this.env.search_request;
	this.reset_qsearch();

	if (s && this.env.mailbox)
	this.list_mailbox(this.env.mailbox);
	else if (s && this.task == 'addressbook')
	this.list_contacts(this.env.source, this.env.group);
	break;

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

	case 'import':
	if (this.env.action == 'import' && this.gui_objects.importform) {
	var file = document.getElementById('rcmimportfile');
	if (file && !file.value) {
	alert(this.get_label('selectimportfile'));
	break;
	}
	this.gui_objects.importform.submit();
	this.set_busy(true, 'importwait');
	this.lock_form(this.gui_objects.importform, true);
	}
	else
	this.goto_url('import', (this.env.source ? '_target='+urlencode(this.env.source)+'&' : ''));
	break;

	case 'export':
	if (this.contact_list.rowcount > 0) {
	var add_url = (this.env.source ? '_source='+urlencode(this.env.source)+'&' : '');
	if (this.env.search_request)
	add_url += '_search='+this.env.search_request;

	this.goto_url('export', add_url);
	}
	break;

	// user settings commands
	case 'preferences':
	this.goto_url('');
	break;

	case 'identities':
	this.goto_url('settings/identities');
	break;

	case 'folders':
	this.goto_url('settings/folders');
	break;

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

	this.triggerEvent('after'+command, props);
	this.triggerEvent('actionafter', {props:props, action:command});

	return obj ? false : true;
	};

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

	for (var 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'));
	}
	// push array elements into commands array
	else {
	for (var i in cmd)
	args.push(cmd[i]);
	}
	}
	};

	// 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;
	//document.body.style.cursor = a ? 'wait' : 'default';

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

	// clear pending timer
	if (this.request_timer)
	clearTimeout(this.request_timer);

	// set timer for requests
	if (a && this.env.request_timeout)
	this.request_timer = window.setTimeout(function(){ ref.request_timed_out(); }, this.env.request_timeout * 1000);

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

	var url = this.get_task_url(task);
	if (task=='mail')
	url += '&_mbox=INBOX';

	this.redirect(url);
	};

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

	return url.replace(/_task=[a-z]+/, '_task='+task);
	};

	// called when a request timed out
	this.request_timed_out = function()
	{
	this.set_busy(false);
	this.display_message('Request timed out!', 'error');
	};

	this.reload = function(delay)
	{
	if (this.env.framed && parent.rcmail)
	parent.rcmail.reload(delay);
	else if (delay)
	window.setTimeout(function(){ rcmail.reload(); }, delay);
	else if (window.location)
	location.href = this.env.comm_path;
	};

	// Add variable to GET string, replace old value if exists
	this.add_url = function(url, name, value)
	{
	value = urlencode(value);

	if (/(\?.*)$/.test(url)) {
	var 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);
	}
	else
	return url + '?' + name + '=' + value;
	};

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

	this.drag_menu = function(e, target)
	{
	var modkey = rcube_event.get_modifier(e),
	menu = $('#'+this.gui_objects.message_dragmenu);

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

	return false;
	};

	this.drag_menu_action = function(action)
	{
	var menu = $('#'+this.gui_objects.message_dragmenu);
	if (menu) {
	menu.hide();
	}
	this.command(action, this.env.drag_target);
	this.env.drag_target = null;
	};

	this.drag_start = function(list)
	{
	var model = this.task == 'mail' ? this.env.mailboxes : this.env.contactfolders;

	this.drag_active = true;

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

	// save folderlist and folders location/sizes for droptarget calculation in drag_move()
	if (this.gui_objects.folderlist && model) {
	this.initialBodyScrollTop = bw.ie ? 0 : window.pageYOffset;
	this.initialListScrollTop = this.gui_objects.folderlist.parentNode.scrollTop;

	var li, pos, list, height;
	list = $(this.gui_objects.folderlist);
	pos = list.offset();
	this.env.folderlist_coords = { x1:pos.left, y1:pos.top, x2:pos.left + list.width(), y2:pos.top + list.height() };

	this.env.folder_coords = [];
	for (var k in model) {
	if (li = this.get_folder_li(k)) {
	// only visible folders
	if (height = li.firstChild.offsetHeight) {
	pos = $(li.firstChild).offset();
	this.env.folder_coords[k] = { x1:pos.left, y1:pos.top,
	x2:pos.left + li.firstChild.offsetWidth, y2:pos.top + height, on:0 };
	}
	}
	}
	}
	};

	this.drag_end = function(e)
	{
	this.drag_active = false;
	this.env.last_folder_target = null;

	if (this.folder_auto_timer) {
	window.clearTimeout(this.folder_auto_timer);
	this.folder_auto_timer = null;
	this.folder_auto_expand = null;
	}

	// over the folders
	if (this.gui_objects.folderlist && this.env.folder_coords) {
	for (var k in this.env.folder_coords) {
	if (this.env.folder_coords[k].on)
	$(this.get_folder_li(k)).removeClass('droptarget');
	}
	}
	};

	this.drag_move = function(e)
	{
	if (this.gui_objects.folderlist && this.env.folder_coords) {
	// offsets to compensate for scrolling while dragging a message
	var boffset = bw.ie ? -document.documentElement.scrollTop : this.initialBodyScrollTop;
	var moffset = this.initialListScrollTop-this.gui_objects.folderlist.parentNode.scrollTop;
	var toffset = -moffset-boffset;
	var li, div, pos, mouse, check, oldclass,
	layerclass = 'draglayernormal';

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

	mouse = rcube_event.get_mouse_pos(e);
	pos = this.env.folderlist_coords;
	mouse.y += toffset;

	// if mouse pointer is outside of folderlist
	if (mouse.x < pos.x1 \|\| mouse.x >= pos.x2 \|\| mouse.y < pos.y1 \|\| mouse.y >= pos.y2) {
	if (this.env.last_folder_target) {
	$(this.get_folder_li(this.env.last_folder_target)).removeClass('droptarget');
	this.env.folder_coords[this.env.last_folder_target].on = 0;
	this.env.last_folder_target = null;
	}
	if (layerclass != oldclass && this.contact_list && this.contact_list.draglayer)
	this.contact_list.draglayer.attr('class', layerclass);
	return;
	}

	// over the folders
	for (var k in this.env.folder_coords) {
	pos = this.env.folder_coords[k];
	if (mouse.x >= pos.x1 && mouse.x < pos.x2 && mouse.y >= pos.y1 && mouse.y < pos.y2){
	if ((check = this.check_droptarget(k))) {
	li = this.get_folder_li(k);
	div = $(li.getElementsByTagName('div')[0]);

	// if the folder is collapsed, expand it after 1sec and restart the drag & drop process.
	if (div.hasClass('collapsed')) {
	if (this.folder_auto_timer)
	window.clearTimeout(this.folder_auto_timer);

	this.folder_auto_expand = k;
	this.folder_auto_timer = window.setTimeout(function() {
	rcmail.command('collapse-folder', rcmail.folder_auto_expand);
	rcmail.drag_start(null);
	}, 1000);
	} else if (this.folder_auto_timer) {
	window.clearTimeout(this.folder_auto_timer);
	this.folder_auto_timer = null;
	this.folder_auto_expand = null;
	}

	$(li).addClass('droptarget');
	this.env.folder_coords[k].on = 1;
	this.env.last_folder_target = k;
	layerclass = 'draglayer' + (check > 1 ? 'copy' : 'normal');
	} else { // Clear target, otherwise drag end will trigger move into last valid droptarget
	this.env.last_folder_target = null;
	}
	}
	else if (pos.on) {
	$(this.get_folder_li(k)).removeClass('droptarget');
	this.env.folder_coords[k].on = 0;
	}
	}

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

	this.collapse_folder = function(id)
	{
	var li = this.get_folder_li(id),
	div = $(li.getElementsByTagName('div')[0]);

	if (!div \|\| (!div.hasClass('collapsed') && !div.hasClass('expanded')))
	return;

	var ul = $(li.getElementsByTagName('ul')[0]);

	if (div.hasClass('collapsed')) {
	ul.show();
	div.removeClass('collapsed').addClass('expanded');
	var reg = new RegExp('&'+urlencode(id)+'&');
	this.set_env('collapsed_folders', this.env.collapsed_folders.replace(reg, ''));
	}
	else {
	ul.hide();
	div.removeClass('expanded').addClass('collapsed');
	this.set_env('collapsed_folders', this.env.collapsed_folders+'&'+urlencode(id)+'&');

	// select parent folder if one of its childs is currently selected
	if (this.env.mailbox.indexOf(id + this.env.delimiter) == 0)
	this.command('list', id);
	}

	// Work around a bug in IE6 and IE7, see #1485309
	if (bw.ie6 \|\| bw.ie7) {
	var siblings = li.nextSibling ? li.nextSibling.getElementsByTagName('ul') : null;
	if (siblings && siblings.length && (li = siblings[0]) && li.style && li.style.display != 'none') {
	li.style.display = 'none';
	li.style.display = '';
	}
	}

	this.http_post('save-pref', '_name=collapsed_folders&_value='+urlencode(this.env.collapsed_folders));
	this.set_unread_count_display(id, false);
	};

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

	if (this.message_list) {
	if (!rcube_mouse_is_over(e, this.message_list.list.parentNode))
	this.message_list.blur();
	else
	this.message_list.focus();
	list = this.message_list;
	model = this.env.mailboxes;
	}
	else if (this.contact_list) {
	if (!rcube_mouse_is_over(e, this.contact_list.list.parentNode))
	this.contact_list.blur();
	else
	this.contact_list.focus();
	list = this.contact_list;
	model = this.env.contactfolders;
	}
	else if (this.ksearch_value) {
	this.ksearch_blur();
	}

	// handle mouse release when dragging
	if (this.drag_active && model && this.env.last_folder_target) {
	var target = model[this.env.last_folder_target];

	$(this.get_folder_li(this.env.last_folder_target)).removeClass('droptarget');
	this.env.last_folder_target = null;
	list.draglayer.hide();

	if (!this.drag_menu(e, target))
	this.command('moveto', target);
	}

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

	this.click_on_list = function(e)
	{
	if (this.gui_objects.qsearchbox)
	this.gui_objects.qsearchbox.blur();

	if (this.message_list)
	this.message_list.focus();
	else if (this.contact_list)
	this.contact_list.focus();

	return true;
	};

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

	var selected = list.get_single_selection() != null;

	this.enable_command(this.env.message_commands, selected);
	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', false);
	// Disable reply-list when List-Post header is not set
	else {
	var msg = this.env.messages[list.get_single_selection()];
	if (!msg.ml)
	this.enable_command('reply-list', false);
	}
	}
	// Multi-message commands
	this.enable_command('delete', 'moveto', 'copy', 'mark', (list.selection.length > 0 ? true : false));

	// reset all-pages-selection
	if (selected \|\| (list.selection.length && list.selection.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)
	this.preview_timer = window.setTimeout(function(){ ref.msglist_get_preview(); }, 200);
	else if (this.env.contentframe)
	this.show_contentframe(false);
	};

	// This allow as to re-select selected message and display it in preview frame
	this.msglist_click = function(list)
	{
	if (list.multi_selecting \|\| !this.env.contentframe)
	return;

	if (list.get_single_selection() && window.frames && window.frames[this.env.contentframe]) {
	if (window.frames[this.env.contentframe].location.href.indexOf(this.env.blankpage)>=0) {
	if (this.preview_timer)
	clearTimeout(this.preview_timer);
	if (this.preview_read_timer)
	clearTimeout(this.preview_read_timer);
	this.preview_timer = window.setTimeout(function(){ ref.msglist_get_preview(); }, 200);
	}
	}
	};

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

	if (this.preview_read_timer)
	clearTimeout(this.preview_read_timer);

	var uid = list.get_single_selection();
	if (uid && this.env.mailbox == this.env.drafts_mailbox)
	this.goto_url('compose', '_draft_uid='+uid+'&_mbox='+urlencode(this.env.mailbox), true);
	else if (uid)
	this.show_message(uid, false, false);
	};

	this.msglist_keypress = function(list)
	{
	if (list.key_pressed == list.ENTER_KEY)
	this.command('show');
	else if (list.key_pressed == list.DELETE_KEY)
	this.command('delete');
	else if (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');
	else
	list.shiftkey = false;
	};

	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;
	};

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

	this.env.coltypes = [];

	for (i=0; i<cols.length; i++)
	if (cols[i].id && cols[i].id.match(/^rcm/)) {
	name = cols[i].id.replace(/^rcm/, '');
	this.env.coltypes.push(name == 'to' ? 'from' : name);
	}

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

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

	this.http_post('save-pref', { '_name':'list_cols', '_value':this.env.coltypes, '_session':'list_attrib/columns' });
	};

	this.check_droptarget = function(id)
	{
	var allow = false, copy = false;

	if (this.task == 'mail')
	allow = (this.env.mailboxes[id] && this.env.mailboxes[id].id != this.env.mailbox && !this.env.mailboxes[id].virtual);
	else if (this.task == 'settings')
	allow = (id != this.env.folder);
	else if (this.task == 'addressbook') {
	if (id != this.env.source && this.env.contactfolders[id]) {
	if (this.env.contactfolders[id].type == 'group') {
	var target_abook = this.env.contactfolders[id].source;
	allow = this.env.contactfolders[id].id != this.env.group && !this.env.contactfolders[target_abook].readonly;
	copy = target_abook != this.env.source;
	}
	else {
	allow = !this.env.contactfolders[id].readonly;
	copy = true;
	}
	}
	}

	return allow ? (copy ? 2 : 1) : 0;
	};


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

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

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

	// set eventhandler to status icon
	if (row.icon = document.getElementById(status_icon)) {
	row.icon._row = row.obj;
	row.icon.onmousedown = function(e) { self.command('toggle_status', this); rcube_event.cancel(e); };
	}

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

	// set eventhandler to flag icon, if icon found
	if (this.env.flagged_col != null && (row.flagicon = document.getElementById('flagicn'+row.uid))) {
	row.flagicon._row = row.obj;
	row.flagicon.onmousedown = function(e) { self.command('toggle_flag', this); rcube_event.cancel(e); };
	}

	if (!row.depth && row.has_children && (expando = document.getElementById('rcmexpando'+row.uid))) {
	row.expando = expando;
	expando.onmousedown = function(e) { return self.expand_message_row(e, uid); };
	}

	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;

	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.replied?1:0,
	unread: flags.unread?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?flags.unread_children:0,
	parent_uid: flags.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,
	// flags from plugins
	flags: flags.extra_flags
	});

	var c, html, tree = expando = '',
	list = this.message_list,
	rows = list.rows,
	tbody = this.gui_objects.messagelist.tBodies[0],
	rowcount = tbody.rows.length,
	even = rowcount%2,
	message = this.env.messages[uid],
	css_class = 'message'
	+ (even ? ' even' : ' odd')
	+ (flags.unread ? ' unread' : '')
	+ (flags.deleted ? ' deleted' : '')
	+ (flags.flagged ? ' flagged' : '')
	+ (flags.unread_children && !flags.unread && !this.env.autoexpand_threads ? ' unroot' : '')
	+ (message.selected ? ' selected' : ''),
	// for performance use DOM instead of jQuery here
	row = document.createElement('tr'),
	col = document.createElement('td');

	row.id = 'rcmrow'+uid;
	row.className = css_class;

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

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

	// threads
	if (this.env.threading) {
	// This assumes that div width is hardcoded to 15px,
	var width = message.depth * 15;
	if (message.depth) {
	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;
	}
	else if (message.has_children) {
	if (typeof(message.expanded) == 'undefined' && (this.env.autoexpand_threads == 1 \|\| (this.env.autoexpand_threads == 2 && message.unread_children))) {
	message.expanded = true;
	}
	}

	if (width)
	tree += '<span id="rcmtab' + uid + '" class="branch" style="width:' + width + 'px;">  </span>';

	if (message.has_children && !message.depth)
	expando = '<div id="rcmexpando' + uid + '" class="' + (message.expanded ? 'expanded' : 'collapsed') + '">  </div>';
	}

	tree += '<span id="msgicn'+uid+'" class="'+css_class+'"> </span>';

	// build subject link
	if (!bw.ie && cols.subject) {
	var action = flags.mbox == this.env.drafts_mailbox ? 'compose' : 'show';
	var uid_param = flags.mbox == this.env.drafts_mailbox ? '_draft_uid' : '_uid';
	cols.subject = '<a href="./?_task=mail&_action='+action+'&_mbox='+urlencode(flags.mbox)+'&'+uid_param+'='+uid+'"'+
	' onclick="return rcube_event.cancel(event)">'+cols.subject+'</a>';
	}

	// add each submitted col
	for (var n in this.env.coltypes) {
	c = this.env.coltypes[n];
	col = document.createElement('td');
	col.className = String(c).toLowerCase();

	if (c == 'flag') {
	css_class = (flags.flagged ? 'flagged' : 'unflagged');
	html = '<span id="flagicn'+uid+'" class="'+css_class+'"> </span>';
	}
	else if (c == 'attachment') {
	if (/application\/\|multipart\/m/.test(flags.ctype))
	html = '<span class="attachment"> </span>';
	else if (/multipart\/report/.test(flags.ctype))
	html = '<span class="report"> </span>';
	else
	html = ' ';
	}
	else if (c == 'status') {
	if (flags.deleted)
	css_class = 'deleted';
	else if (flags.unread)
	css_class = 'unread';
	else if (flags.unread_children > 0)
	css_class = 'unreadchildren';
	else
	css_class = 'msgicon';
	html = '<span id="statusicn'+uid+'" class="'+css_class+'"> </span>';
	}
	else if (c == 'threads')
	html = expando;
	else if (c == 'subject')
	html = tree + cols[c];
	else
	html = cols[c];

	col.innerHTML = html;

	row.appendChild(col);
	}

	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);
	}
	};

	this.set_list_sorting = function(sort_col, sort_order)
	{
	// set table header class
	$('#rcm'+this.env.sort_col).removeClass('sorted'+(this.env.sort_order.toUpperCase()));
	if (sort_col)
	$('#rcm'+sort_col).addClass('sorted'+sort_order);

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

	this.set_list_options = function(cols, sort_col, sort_order, threads)
	{
	var update, add_url = '';

	if (typeof 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;
	add_url += '&_threads=' + threads;
	}

	if (cols && cols.length) {
	// make sure new columns are added at the end of the list
	var i, idx, name, newcols = [], oldcols = this.env.coltypes;
	for (i=0; i<oldcols.length; i++) {
	name = oldcols[i] == 'to' ? 'from' : 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;
	add_url += '&_cols=' + newcols.join(',');
	}
	}

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

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

	var add_url = '',
	target = window,
	action = preview ? 'preview': 'show';

	if (preview && this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
	target = window.frames[this.env.contentframe];
	add_url = '&_framed=1';
	}

	if (safe)
	add_url = '&_safe=1';

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

	var url = '&_action='+action+'&_uid='+id+'&_mbox='+urlencode(this.env.mailbox)+add_url;
	if (action == 'preview' && String(target.location.href).indexOf(url) >= 0)
	this.show_contentframe(true);
	else {
	if (!this.env.frame_lock)
	this.env.frame_lock = this.set_busy(true, 'loading');
	target.location.href = this.env.comm_path+url;

	// mark as read and change mbox unread counter
	if (action == 'preview' && this.message_list && this.message_list.rows[id] && this.message_list.rows[id].unread && this.env.preview_pane_mark_read >= 0) {
	this.preview_read_timer = window.setTimeout(function() {
	ref.set_message(id, 'unread', false);
	ref.update_thread_root(id, 'read');
	if (ref.env.unread_counts[ref.env.mailbox]) {
	ref.env.unread_counts[ref.env.mailbox] -= 1;
	ref.set_unread_count(ref.env.mailbox, ref.env.unread_counts[ref.env.mailbox], ref.env.mailbox == 'INBOX');
	}
	if (ref.env.preview_pane_mark_read > 0)
	ref.http_post('mark', '_uid='+id+'&_flag=read&_quiet=1');
	}, this.env.preview_pane_mark_read * 1000);
	}
	}
	};

	this.show_contentframe = function(show)
	{
	var frm, win;
	if (this.env.contentframe && (frm = $('#'+this.env.contentframe)) && frm.length) {
	if (!show && (win = window.frames[this.env.contentframe])) {
	if (win.location && win.location.href.indexOf(this.env.blankpage)<0)
	win.location.href = this.env.blankpage;
	}
	else if (!bw.safari && !bw.konq)
	frm[show ? 'show' : 'hide']();
	}

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

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

	// list messages of a specific mailbox using filter
	this.filter_mailbox = function(filter)
	{
	var search, lock = this.set_busy(true, 'searching');

	if (this.gui_objects.qsearchbox)
	search = this.gui_objects.qsearchbox.value;

	this.clear_message_list();

	// reset vars
	this.env.current_page = 1;
	this.http_request('search', '_filter='+filter
	+ (search ? '&_q='+urlencode(search) : '')
	+ (this.env.mailbox ? '&_mbox='+urlencode(this.env.mailbox) : ''), lock);
	};

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

	if (!mbox)
	mbox = this.env.mailbox;

	if (add_url)
	url += add_url;

	// add sort to url if set
	if (sort)
	url += '&_sort=' + sort;

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

	// set page=1 if changeing to another mailbox
	if (this.env.mailbox != mbox) {
	page = 1;
	this.env.current_page = page;
	this.select_all_mode = false;
	}

	// 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, this.env.mailbox);
	this.env.mailbox = mbox;

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

	if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
	target = window.frames[this.env.contentframe];
	url += '&_framed=1';
	}

	// load message list to target frame/window
	if (mbox) {
	this.set_busy(true, 'loading');
	target.location.href = this.env.comm_path+'&_mbox='+urlencode(mbox)+(page ? '&_page='+page : '')+url;
	}
	};

	this.clear_message_list = function()
	{
	this.env.messages = {};
	this.last_selected = 0;

	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, add_url)
	{
	// clear message list first
	this.message_list.clear();

	// send request to server
	var url = '_mbox='+urlencode(mbox)+(page ? '&_page='+page : ''),
	lock = this.set_busy(true, 'loading');
	this.http_request('list', url+add_url, lock);
	};

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

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

	this.message_list.selection = selection;
	}

	// expand all threads with unread children
	this.expand_unread = function()
	{
	var r, tbody = this.gui_objects.messagelist.tBodies[0],
	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 mark
	row.expanded = !row.expanded;
	this.set_unread_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)
	{
	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.list.tBodies[0].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'+uid).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 ? p.unread_children + 1 : 1;
	}
	else {
	return;
	}

	this.set_message_icon(root);
	this.set_unread_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)
	return 0;

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

	if (!row.depth) // root message: decrease roots count
	count--;
	else if (row.unread) {
	// update unread_children for thread root
	parent = this.message_list.find_root(uid);
	rows[parent].unread_children--;
	this.set_unread_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.uid).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'
	$('#rcmrow'+r.uid+' '+'.leaf:first')
	.attr('id', 'rcmexpando' + r.uid)
	.attr('class', (r.obj.style.display != 'none' ? 'expanded' : 'collapsed'))
	.bind('mousedown', {uid:r.uid, p:this},
	function(e) { return e.data.p.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 for roots
	for (var i=0; i<roots.length; i++)
	this.set_unread_children(roots[i].uid);

	return count;
	};

	this.delete_excessive_thread_rows = function()
	{
	var rows = this.message_list.rows,
	tbody = this.message_list.list.tBodies[0],
	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,
	row = this.message_list.rows[uid];

	if (!row)
	return false;

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

	row.icon.className = css_class;
	}

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

	row.msgicon.className = css_class;
	}

	if (row.flagicon) {
	css_class = (row.flagged ? 'flagged' : 'unflagged');
	row.flagicon.className = css_class;
	}
	};

	// 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')
	row.unread = status;
	else if(flag == 'deleted')
	row.deleted = status;
	else if (flag == 'replied')
	row.replied = status;
	else if (flag == 'forwarded')
	row.forwarded = status;
	else if (flag == 'flagged')
	row.flagged = status;
	};

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

	if (!row)
	return false;

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

	var rowobj = $(row.obj);

	if (row.unread && !rowobj.hasClass('unread'))
	rowobj.addClass('unread');
	else if (!row.unread && rowobj.hasClass('unread'))
	rowobj.removeClass('unread');

	if (row.deleted && !rowobj.hasClass('deleted'))
	rowobj.addClass('deleted');
	else if (!row.deleted && rowobj.hasClass('deleted'))
	rowobj.removeClass('deleted');

	if (row.flagged && !rowobj.hasClass('flagged'))
	rowobj.addClass('flagged');
	else if (!row.flagged && rowobj.hasClass('flagged'))
	rowobj.removeClass('flagged');

	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;

	if (!row.unread && row.unread_children && !row.expanded)
	$(row.obj).addClass('unroot');
	else
	$(row.obj).removeClass('unroot');
	};

	// copy selected messages to the specified mailbox
	this.copy_messages = function(mbox)
	{
	if (mbox && typeof mbox == 'object')
	mbox = mbox.id;

	// exit if current or no mailbox specified or if selection is empty
	if (!mbox \|\| mbox == this.env.mailbox \|\| (!this.env.uid && (!this.message_list \|\| !this.message_list.get_selection().length)))
	return;

	var a_uids = [],
	lock = this.display_message(this.get_label('copyingmessage'), 'loading'),
	add_url = '&_target_mbox='+urlencode(mbox)+'&_from='+(this.env.action ? this.env.action : '');

	if (this.env.uid)
	a_uids[0] = this.env.uid;
	else {
	var selection = this.message_list.get_selection();
	for (var n in selection) {
	a_uids.push(selection[n]);
	}
	}

	// send request to server
	this.http_post('copy', '_uid='+a_uids.join(',')+'&_mbox='+urlencode(this.env.mailbox)+add_url, lock);
	};

	// move selected messages to the specified mailbox
	this.move_messages = function(mbox)
	{
	if (mbox && typeof mbox == 'object')
	mbox = mbox.id;

	// exit if current or no mailbox specified or if selection is empty
	if (!mbox \|\| mbox == this.env.mailbox \|\| (!this.env.uid && (!this.message_list \|\| !this.message_list.get_selection().length)))
	return;

	var lock = false;
	var add_url = '&_target_mbox='+urlencode(mbox)+'&_from='+(this.env.action ? this.env.action : '');

	// 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('moveto', lock, add_url);
	};

	// delete selected messages from the current mailbox
	this.delete_messages = function()
	{
	var selection = this.message_list ? $.merge([], this.message_list.get_selection()) : [];

	// exit if no mailbox specified or if selection is empty
	if (!this.env.uid && !selection.length)
	return;

	// also select childs of collapsed rows
	for (var uid, i=0, len=selection.length; i<len; i++) {
	uid = selection[i];
	if (this.message_list.rows[uid].has_children && !this.message_list.rows[uid].expanded)
	this.message_list.select_childs(uid);
	}

	// 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 (!this.env.trash_mailbox \|\| this.env.mailbox == this.env.trash_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 (this.message_list && this.message_list.shiftkey) {
	if (confirm(this.get_label('deletemessagesconfirm')))
	this.permanently_remove_messages();
	}
	else
	this.move_messages(this.env.trash_mailbox);
	}

	return true;
	};

	// delete the selected messages permanently
	this.permanently_remove_messages = function()
	{
	// exit if no mailbox specified or if selection is empty
	if (!this.env.uid && (!this.message_list \|\| !this.message_list.get_selection().length))
	return;

	this.show_contentframe(false);
	this._with_selected_messages('delete', false, '&_from='+(this.env.action ? this.env.action : ''));
	};

	// Send a specifc moveto/delete request with UIDs of all selected messages
	// @private
	this._with_selected_messages = function(action, lock, add_url)
	{
	var a_uids = [], count = 0, msg;

	if (this.env.uid)
	a_uids[0] = this.env.uid;
	else {
	var n, id, root, roots = [],
	selection = this.message_list.get_selection();

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

	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);
	}
	}
	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)
	this.message_list.clear_selection();
	// update thread tree icons
	for (n=0, len=roots.length; n<len; n++) {
	this.add_tree_icons(roots[n]);
	}
	}

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

	if (this.env.display_next && this.env.next_uid)
	add_url += '&_next_uid='+this.env.next_uid;

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

	add_url += '&_uid='+this.uids_to_list(a_uids);

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

	// send request to server
	this.http_post(action, '_mbox='+urlencode(this.env.mailbox)+add_url, lock);
	};

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

	if (uid)
	a_uids[0] = uid;
	else if (this.env.uid)
	a_uids[0] = this.env.uid;
	else if (this.message_list) {
	for (n=0, len=selection.length; n<len; n++) {
	a_uids.push(selection[n]);
	}
	}

	if (!this.message_list)
	r_uids = a_uids;
	else
	for (n=0, len=a_uids.length; n<len; n++) {
	id = a_uids[n];
	if ((flag=='read' && this.message_list.rows[id].unread)
	\|\| (flag=='unread' && !this.message_list.rows[id].unread)
	\|\| (flag=='delete' && !this.message_list.rows[id].deleted)
	\|\| (flag=='undelete' && this.message_list.rows[id].deleted)
	\|\| (flag=='flagged' && !this.message_list.rows[id].flagged)
	\|\| (flag=='unflagged' && this.message_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)
	{
	// mark all message rows as read/unread
	for (var i=0; i<a_uids.length; i++)
	this.set_message(a_uids[i], 'unread', (flag=='unread' ? true : false));

	var url = '_uid='+this.uids_to_list(a_uids)+'&_flag='+flag,
	lock = this.display_message(this.get_label('markingmessage'), 'loading');

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

	this.http_post('mark', url, lock);

	for (var i=0; i<a_uids.length; i++)
	this.update_thread_root(a_uids[i], flag);
	};

	// set image to flagged or unflagged
	this.toggle_flagged_status = function(flag, a_uids)
	{
	// mark all message rows as flagged/unflagged
	for (var i=0; i<a_uids.length; i++)
	this.set_message(a_uids[i], 'flagged', (flag=='flagged' ? true : false));

	var url = '_uid='+this.uids_to_list(a_uids)+'&_flag='+flag,
	lock = this.display_message(this.get_label('markingmessage'), 'loading');

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

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

	// mark all message rows as deleted/undeleted
	this.toggle_delete_status = function(a_uids)
	{
	var rows = this.message_list ? this.message_list.rows : [];

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

	return true;
	}

	var uid, all_deleted = true;
	for (var i=0, len=a_uids.length; 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)
	{
	for (var i=0, len=a_uids.length; i<len; i++)
	this.set_message(a_uids[i], 'deleted', false);

	var url = '_uid='+this.uids_to_list(a_uids)+'&_flag=undelete',
	lock = this.display_message(this.get_label('markingmessage'), 'loading');

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

	this.http_post('mark', url, lock);
	return true;
	};

	this.flag_as_deleted = function(a_uids)
	{
	var add_url = '',
	r_uids = [],
	rows = this.message_list ? this.message_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);
	this.message_list.remove_row(uid, (this.env.display_next && i == this.message_list.selection.length-1));
	}
	else
	this.set_message(uid, 'deleted', true);
	}
	}

	// make sure there are no selected rows
	if (this.env.skip_deleted && this.message_list) {
	if(!this.env.display_next)
	this.message_list.clear_selection();
	if (count < 0)
	add_url += '&_count='+(count*-1);
	else if (count > 0)
	// remove threads from the end of the list
	this.delete_excessive_thread_rows();
	}

	add_url = '&_from='+(this.env.action ? this.env.action : ''),
	lock = this.display_message(this.get_label('markingmessage'), 'loading');

	// ??
	if (r_uids.length)
	add_url += '&_ruid='+this.uids_to_list(r_uids);

	if (this.env.skip_deleted) {
	if (this.env.display_next && this.env.next_uid)
	add_url += '&_next_uid='+this.env.next_uid;
	}

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

	this.http_post('mark', '_uid='+this.uids_to_list(a_uids)+'&_flag=delete'+add_url, lock);
	return true;
	};

	// 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 icn_src, uid,
	rows = this.message_list ? this.message_list.rows : [],
	str = String(uids),
	a_uids = str.split(',');

	for (var i=0; i<a_uids.length; i++) {
	uid = a_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 ? '*' : uids.join(',');
	};


	/*********************************************************/
	/******* mailbox folders methods *******/
	/*********************************************************/

	this.expunge_mailbox = function(mbox)
	{
	var lock = false;
	var add_url = '';

	// lock interface if it's the active mailbox
	if (mbox == this.env.mailbox) {
	lock = this.set_busy(true, 'loading');
	add_url = '&_reload=1';
	}

	// send request to server
	var url = '_mbox='+urlencode(mbox);
	this.http_post('expunge', url+add_url, lock);
	};

	this.purge_mailbox = function(mbox)
	{
	var lock = false;
	var add_url = '';

	if (!confirm(this.get_label('purgefolderconfirm')))
	return false;

	// lock interface if it's the active mailbox
	if (mbox == this.env.mailbox) {
	lock = this.set_busy(true, 'loading');
	add_url = '&_reload=1';
	}

	// send request to server
	var url = '_mbox='+urlencode(mbox);
	this.http_post('purge', url+add_url, lock);
	return true;
	};

	// test if purge command is allowed
	this.purge_mailbox_test = function()
	{
	return (this.env.messagecount && (this.env.mailbox == this.env.trash_mailbox \|\| this.env.mailbox == this.env.junk_mailbox
	\|\| this.env.mailbox.match('^' + RegExp.escape(this.env.trash_mailbox) + RegExp.escape(this.env.delimiter))
	\|\| this.env.mailbox.match('^' + RegExp.escape(this.env.junk_mailbox) + RegExp.escape(this.env.delimiter))));
	};


	/*********************************************************/
	/******* login form methods *******/
	/*********************************************************/

	// handler for keyboard events on the _user field
	this.login_user_keyup = function(e)
	{
	var key = rcube_event.get_keycode(e);
	var passwd = $('#rcmloginpwd');

	// enter
	if (key == 13 && passwd.length && !passwd.val()) {
	passwd.focus();
	return rcube_event.cancel(e);
	}

	return true;
	};


	/*********************************************************/
	/******* message compose methods *******/
	/*********************************************************/

	// init message compose form: set focus and eventhandlers
	this.init_messageform = function()
	{
	if (!this.gui_objects.messageform)
	return false;

	- //this.messageform = this.gui_objects.messageform;
	- var input_from = $("[name='_from']");
	- var input_to = $("[name='_to']");
	- var input_subject = $("input[name='_subject']");
	- var input_message = $("[name='_message']").get(0);
	- var html_mode = $("input[name='_is_html']").val() == '1';
	+ var input_from = $("[name='_from']"),
	+ input_to = $("[name='_to']"),
	+ input_subject = $("input[name='_subject']"),
	+ input_message = $("[name='_message']").get(0),
	+ html_mode = $("input[name='_is_html']").val() == '1',
	+ ac_fields = ['cc', 'bcc', 'replyto', 'mailreplyto', 'mailfollowupto'];

	// init live search events
	this.init_address_input_events(input_to);
	- this.init_address_input_events($("[name='_cc']"));
	- this.init_address_input_events($("[name='_bcc']"));
	+ for (var i in ac_fields) {
	+ this.init_address_input_events($("[name='_"+ac_fields[i]+"']"));
	+ }

	if (!html_mode) {
	this.set_caret_pos(input_message, this.env.top_posting ? 0 : $(input_message).val().length);
	// add signature according to selected identity
	// if we have HTML editor, signature is added in callback
	if (input_from.attr('type') == 'select-one' && $("input[name='_draft_saveid']").val() == '') {
	this.change_identity(input_from[0]);
	}
	}

	if (input_to.val() == '')
	input_to.focus();
	else if (input_subject.val() == '')
	input_subject.focus();
	else if (input_message)
	input_message.focus();

	this.env.compose_focus_elem = document.activeElement;

	// get summary of all field values
	this.compose_field_hash(true);

	// start the auto-save timer
	this.auto_save_start();
	};

	this.init_address_input_events = function(obj)
	{
	obj[bw.ie \|\| bw.safari \|\| bw.chrome ? 'keydown' : 'keypress'](function(e){ return ref.ksearch_keydown(e, this); })
	.attr('autocomplete', 'off');
	};

	// checks the input fields before sending a message
	this.check_compose_input = function()
	{
	// check input fields
	var ed, input_to = $("[name='_to']"),
	input_cc = $("[name='_cc']"),
	input_bcc = $("[name='_bcc']"),
	input_from = $("[name='_from']"),
	input_subject = $("[name='_subject']"),
	input_message = $("[name='_message']");

	// check sender (if have no identities)
	if (input_from.attr('type') == 'text' && !rcube_check_email(input_from.val(), true)) {
	alert(this.get_label('nosenderwarning'));
	input_from.focus();
	return false;
	}

	// check for empty recipient
	var recipients = input_to.val() ? input_to.val() : (input_cc.val() ? input_cc.val() : input_bcc.val());
	if (!rcube_check_email(recipients.replace(/^\s+/, '').replace(/[\s,;]+$/, ''), true)) {
	alert(this.get_label('norecipientwarning'));
	input_to.focus();
	return false;
	}

	// check if all files has been uploaded
	for (var key in this.env.attachments) {
	if (typeof this.env.attachments[key] == 'object' && !this.env.attachments[key].complete) {
	alert(this.get_label('notuploadedwarning'));
	return false;
	}
	}

	// display localized warning for missing subject
	if (input_subject.val() == '') {
	var subject = prompt(this.get_label('nosubjectwarning'), this.get_label('nosubject'));

	// user hit cancel, so don't send
	if (!subject && subject !== '') {
	input_subject.focus();
	return false;
	}
	else
	input_subject.val((subject ? subject : this.get_label('nosubject')));
	}

	// Apply spellcheck changes if spell checker is active
	this.stop_spellchecking();

	if (window.tinyMCE)
	ed = tinyMCE.get(this.env.composebody);

	// check for empty body
	if (!ed && input_message.val() == '' && !confirm(this.get_label('nobodywarning'))) {
	input_message.focus();
	return false;
	}
	else if (ed) {
	if (!ed.getContent() && !confirm(this.get_label('nobodywarning'))) {
	ed.focus();
	return false;
	}
	// move body from html editor to textarea (just to be sure, #1485860)
	tinyMCE.triggerSave();
	}

	return true;
	};

	this.toggle_editor = function(props)
	{
	if (props.mode == 'html') {
	this.display_spellcheck_controls(false);
	this.plain2html($('#'+props.id).val(), props.id);
	tinyMCE.execCommand('mceAddControl', false, props.id);
	}
	else {
	var thisMCE = tinyMCE.get(props.id), existingHtml;
	if (thisMCE.plugins.spellchecker && thisMCE.plugins.spellchecker.active)
	thisMCE.execCommand('mceSpellCheck', false);

	if (existingHtml = thisMCE.getContent()) {
	if (!confirm(this.get_label('editorwarning'))) {
	return false;
	}
	this.html2plain(existingHtml, props.id);
	}
	tinyMCE.execCommand('mceRemoveControl', false, props.id);
	this.display_spellcheck_controls(true);
	}

	return true;
	};

	this.stop_spellchecking = function()
	{
	var ed;
	if (window.tinyMCE && (ed = tinyMCE.get(this.env.composebody))) {
	if (ed.plugins.spellchecker && ed.plugins.spellchecker.active)
	ed.execCommand('mceSpellCheck');
	}
	else if ((ed = this.env.spellcheck) && !this.spellcheck_ready) {
	$(ed.spell_span).trigger('click');
	this.set_spellcheck_state('ready');
	}
	};

	this.display_spellcheck_controls = function(vis)
	{
	if (this.env.spellcheck) {
	// stop spellchecking process
	if (!vis)
	this.stop_spellchecking();

	$(this.env.spellcheck.spell_container).css('visibility', vis ? 'visible' : 'hidden');
	}
	};

	this.set_spellcheck_state = function(s)
	{
	this.spellcheck_ready = (s == 'ready' \|\| s == 'no_error_found');
	this.enable_command('spellcheck', this.spellcheck_ready);
	};

	this.set_draft_id = function(id)
	{
	$("input[name='_draft_saveid']").val(id);
	};

	this.auto_save_start = function()
	{
	if (this.env.draft_autosave)
	this.save_timer = self.setTimeout(function(){ ref.command("savedraft"); }, this.env.draft_autosave * 1000);

	// Unlock interface now that saving is complete
	this.busy = false;
	};

	this.compose_field_hash = function(save)
	{
	// check input fields
	var value_to = $("[name='_to']").val();
	var value_cc = $("[name='_cc']").val();
	var value_bcc = $("[name='_bcc']").val();
	var value_subject = $("[name='_subject']").val();
	var str = '';

	if (value_to)
	str += value_to+':';
	if (value_cc)
	str += value_cc+':';
	if (value_bcc)
	str += value_bcc+':';
	if (value_subject)
	str += value_subject+':';

	var editor = tinyMCE.get(this.env.composebody);
	if (editor)
	str += editor.getContent();
	else
	str += $("[name='_message']").val();

	if (this.env.attachments)
	for (var upload_id in this.env.attachments)
	str += upload_id;

	if (save)
	this.cmp_hash = str;

	return str;
	};

	this.change_identity = function(obj, show_sig)
	{
	if (!obj \|\| !obj.options)
	return false;

	if (!show_sig)
	show_sig = this.env.show_sig;

	var cursor_pos, p = -1,
	id = obj.options[obj.selectedIndex].value,
	input_message = $("[name='_message']"),
	message = input_message.val(),
	is_html = ($("input[name='_is_html']").val() == '1'),
	sig = this.env.identity,
	sig_separator = this.env.sig_above && (this.env.compose_mode == 'reply' \|\| this.env.compose_mode == 'forward') ? '---' : '-- ';

	// enable manual signature insert
	if (this.env.signatures && this.env.signatures[id]) {
	this.enable_command('insert-sig', true);
	this.env.compose_commands.push('insert-sig');
	}
	else
	this.enable_command('insert-sig', false);

	if (!is_html) {
	// remove the 'old' signature
	if (show_sig && sig && this.env.signatures && this.env.signatures[sig]) {

	sig = this.env.signatures[sig].is_html ? this.env.signatures[sig].plain_text : this.env.signatures[sig].text;
	sig = sig.replace(/\r\n/g, '\n');

	if (!sig.match(/^--[ -]\n/))
	sig = sig_separator + '\n' + sig;

	p = this.env.sig_above ? 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 && this.env.signatures && this.env.signatures[id]) {
	sig = this.env.signatures[id]['is_html'] ? this.env.signatures[id]['plain_text'] : this.env.signatures[id]['text'];
	sig = sig.replace(/\r\n/g, '\n');

	if (!sig.match(/^--[ -]\n/))
	sig = sig_separator + '\n' + sig;

	if (this.env.sig_above) {
	if (p >= 0) { // in place of removed signature
	message = message.substring(0, p) + sig + message.substring(p, message.length);
	cursor_pos = p - 1;
	}
	else if (pos = this.get_caret_pos(input_message.get(0))) { // at cursor position
	message = message.substring(0, pos) + '\n' + sig + '\n\n' + message.substring(pos, message.length);
	cursor_pos = pos;
	}
	else { // on top
	cursor_pos = 0;
	message = '\n\n' + sig + '\n\n' + message.replace(/^[\r\n]+/, '');
	}
	}
	else {
	message = message.replace(/[\r\n]+$/, '');
	cursor_pos = !this.env.top_posting && message.length ? message.length+1 : 0;
	message += '\n\n' + sig;
	}
	}
	else
	cursor_pos = this.env.top_posting ? 0 : message.length;

	input_message.val(message);

	// move cursor before the signature
	this.set_caret_pos(input_message.get(0), cursor_pos);
	}
	else if (show_sig && this.env.signatures) { // html
	var editor = tinyMCE.get(this.env.composebody),
	sigElem = editor.dom.get('_rc_sig');

	// Append the signature as a div within the body
	if (!sigElem) {
	var body = editor.getBody(),
	doc = editor.getDoc();

	sigElem = doc.createElement('div');
	sigElem.setAttribute('id', '_rc_sig');

	if (this.env.sig_above) {
	// if no existing sig and top posting then insert at caret pos
	editor.getWin().focus(); // correct focus in IE & Chrome

	var node = editor.selection.getNode();
	if (node.nodeName == 'BODY') {
	// no real focus, insert at start
	body.insertBefore(sigElem, body.firstChild);
	body.insertBefore(doc.createElement('br'), body.firstChild);
	}
	else {
	body.insertBefore(sigElem, node.nextSibling);
	body.insertBefore(doc.createElement('br'), node.nextSibling);
	}
	}
	else {
	if (bw.ie) // add empty line before signature on IE
	body.appendChild(doc.createElement('br'));

	body.appendChild(sigElem);
	}
	}

	if (this.env.signatures[id]) {
	if (this.env.signatures[id].is_html) {
	sig = this.env.signatures[id].text;
	if (!this.env.signatures[id].plain_text.match(/^--[ -]\r?\n/))
	sig = sig_separator + '<br />' + sig;
	}
	else {
	sig = this.env.signatures[id].text;
	if (!sig.match(/^--[ -]\r?\n/))
	sig = sig_separator + '\n' + sig;
	sig = '<pre>' + sig + '</pre>';
	}

	sigElem.innerHTML = sig;
	}
	}

	this.env.identity = id;
	return true;
	};

	// upload attachment file
	this.upload_file = function(form)
	{
	if (!form)
	return false;

	// get file input fields
	var send = false;
	for (var n=0; n<form.elements.length; n++)
	if (form.elements[n].type=='file' && form.elements[n].value) {
	send = true;
	break;
	}

	// create hidden iframe and post upload form
	if (send) {
	var ts = new Date().getTime();
	var frame_name = 'rcmupload'+ts;

	// have to do it this way for IE
	// otherwise the form will be posted to a new window
	if (document.all) {
	var html = '<iframe name="'+frame_name+'" src="program/blank.gif" style="width:0;height:0;visibility:hidden;"></iframe>';
	document.body.insertAdjacentHTML('BeforeEnd',html);
	}
	else { // for standards-compilant browsers
	var frame = document.createElement('iframe');
	frame.name = frame_name;
	frame.style.border = 'none';
	frame.style.width = 0;
	frame.style.height = 0;
	frame.style.visibility = 'hidden';
	document.body.appendChild(frame);
	}

	// handle upload errors, parsing iframe content in onload
	$(frame_name).bind('load', {ts:ts}, function(e) {
	var d, content = '';
	try {
	if (this.contentDocument) {
	d = this.contentDocument;
	} else if (this.contentWindow) {
	d = this.contentWindow.document;
	}
	content = d.childNodes[0].innerHTML;
	} catch (e) {}

	if (!content.match(/add2attachment/) && (!bw.opera \|\| (rcmail.env.uploadframe && rcmail.env.uploadframe == e.data.ts))) {
	if (!content.match(/display_message/))
	rcmail.display_message(rcmail.get_label('fileuploaderror'), 'error');
	rcmail.remove_from_attachment_list(e.data.ts);
	}
	// Opera hack: handle double onload
	if (bw.opera)
	rcmail.env.uploadframe = e.data.ts;
	});

	form.target = frame_name;
	form.action = this.env.comm_path+'&_action=upload&_uploadid='+ts;
	form.setAttribute('enctype', 'multipart/form-data');
	form.submit();

	// display upload indicator and cancel button
	var content = this.get_label('uploading');
	if (this.env.loadingicon)
	content = '<img src="'+this.env.loadingicon+'" alt="" />'+content;
	if (this.env.cancelicon)
	content = '<a title="'+this.get_label('cancel')+'" onclick="return rcmail.cancel_attachment_upload(\''+ts+'\', \''+frame_name+'\');" href="#cancelupload"><img src="'+this.env.cancelicon+'" alt="" /></a>'+content;
	this.add2attachment_list(ts, { name:'', html:content, complete:false });
	}

	// set reference to the form object
	this.gui_objects.attachmentform = form;
	return true;
	};

	// add file name to attachment list
	// called from upload page
	this.add2attachment_list = function(name, att, upload_id)
	{
	if (!this.gui_objects.attachmentlist)
	return false;

	var li = $('<li>').attr('id', name).html(att.html);
	var indicator;

	// 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);
	}

	if (upload_id && this.env.attachments[upload_id])
	delete this.env.attachments[upload_id];

	this.env.attachments[name] = att;

	return true;
	};

	this.remove_from_attachment_list = function(name)
	{
	if (this.env.attachments[name])
	delete this.env.attachments[name];

	if (!this.gui_objects.attachmentlist)
	return false;

	var list = this.gui_objects.attachmentlist.getElementsByTagName("li");
	for (i=0;i<list.length;i++)
	if (list[i].id == name)
	this.gui_objects.attachmentlist.removeChild(list[i]);
	};

	this.remove_attachment = function(name)
	{
	if (name && this.env.attachments[name])
	this.http_post('remove-attachment', '_file='+urlencode(name));

	return true;
	};

	this.cancel_attachment_upload = function(name, frame_name)
	{
	if (!name \|\| !frame_name)
	return false;

	this.remove_from_attachment_list(name);
	$("iframe[name='"+frame_name+"']").remove();
	return false;
	};

	// send remote request to add a new contact
	this.add_contact = function(value)
	{
	if (value)
	this.http_post('addcontact', '_address='+value);

	return true;
	};

	// send remote request to search mail or contacts
	this.qsearch = function(value)
	{
	if (value != '') {
	var addurl = '';
	if (this.message_list) {
	this.clear_message_list();
	if (this.env.search_mods) {
	var mods = this.env.search_mods[this.env.mailbox] ? this.env.search_mods[this.env.mailbox] : this.env.search_mods['*'];
	if (mods) {
	var head_arr = [];
	for (var n in mods)
	head_arr.push(n);
	addurl += '&_headers='+head_arr.join(',');
	}
	}
	} else if (this.contact_list) {
	this.contact_list.clear(true);
	this.show_contentframe(false);
	}

	if (this.gui_objects.search_filter)
	addurl += '&_filter=' + this.gui_objects.search_filter.value;

	// reset vars
	this.env.current_page = 1;
	var lock = this.set_busy(true, 'searching');
	this.http_request('search', '_q='+urlencode(value)
	+ (this.env.mailbox ? '&_mbox='+urlencode(this.env.mailbox) : '')
	+ (this.env.source ? '&_source='+urlencode(this.env.source) : '')
	+ (this.env.group ? '&_gid='+urlencode(this.env.group) : '')
	+ (addurl ? addurl : ''), lock);
	}
	return true;
	};

	// reset quick-search form
	this.reset_qsearch = function()
	{
	if (this.gui_objects.qsearchbox)
	this.gui_objects.qsearchbox.value = '';

	this.env.search_request = null;
	return true;
	};

	this.sent_successfully = function(type, msg)
	{
	this.display_message(msg, type);
	// before redirect we need to wait some time for Chrome (#1486177)
	window.setTimeout(function(){ ref.list_mailbox(); }, 500);
	};


	/*********************************************************/
	/******* keyboard live-search methods *******/
	/*********************************************************/

	// handler for keyboard events on address-fields
	this.ksearch_keydown = function(e, obj)
	{
	if (this.ksearch_timer)
	clearTimeout(this.ksearch_timer);

	var highlight;
	var key = rcube_event.get_keycode(e);
	var mod = rcube_event.get_modifier(e);

	switch (key) {
	case 38: // key up
	case 40: // key down
	if (!this.ksearch_pane)
	break;

	var dir = key==38 ? 1 : 0;

	highlight = document.getElementById('rcmksearchSelected');
	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 (mod == SHIFT_KEY)
	break;

	case 13: // enter
	if (this.ksearch_selected===null \|\| !this.ksearch_input \|\| !this.ksearch_value)
	break;

	// insert selected address and hide ksearch pane
	this.insert_recipient(this.ksearch_selected);
	this.ksearch_hide();

	return rcube_event.cancel(e);

	case 27: // escape
	this.ksearch_hide();
	break;

	case 37: // left
	case 39: // right
	if (mod != SHIFT_KEY)
	return;
	}

	// start timer
	this.ksearch_timer = window.setTimeout(function(){ ref.ksearch_get_results(); }, 200);
	this.ksearch_input = obj;

	return true;
	};

	this.ksearch_select = function(node)
	{
	var current = $('#rcmksearchSelected');
	if (current[0] && node) {
	current.removeAttr('id').removeClass('selected');
	}

	if (node) {
	$(node).attr('id', 'rcmksearchSelected').addClass('selected');
	this.ksearch_selected = node._rcm_id;
	}
	};

	this.insert_recipient = function(id)
	{
	if (!this.env.contacts[id] \|\| !this.ksearch_input)
	return;

	// get cursor pos
	var inp_value = this.ksearch_input.value;
	var cpos = this.get_caret_pos(this.ksearch_input);
	var p = inp_value.lastIndexOf(this.ksearch_value, cpos);

	// replace search string with full address
	var pre = this.ksearch_input.value.substring(0, p);
	var end = this.ksearch_input.value.substring(p+this.ksearch_value.length, this.ksearch_input.value.length);
	var insert = '';

	// insert all members of a group
	if (typeof this.env.contacts[id] == 'object' && this.env.contacts[id].id) {
	insert += this.env.contacts[id].name + ', ';
	this.group2expand = $.extend({}, this.env.contacts[id]);
	this.group2expand.input = this.ksearch_input;
	this.http_request('group-expand', '_source='+urlencode(this.env.contacts[id].source)+'&_gid='+urlencode(this.env.contacts[id].id), false);
	}
	else if (typeof this.env.contacts[id] == 'string')
	insert = this.env.contacts[id] + ', ';

	this.ksearch_input.value = pre + insert + end;

	// set caret to insert pos
	cpos = p+insert.length;
	if (this.ksearch_input.setSelectionRange)
	this.ksearch_input.setSelectionRange(cpos, cpos);
	};

	this.replace_group_recipients = function(id, recipients)
	{
	if (this.group2expand && this.group2expand.id == id) {
	this.group2expand.input.value = this.group2expand.input.value.replace(this.group2expand.name, recipients);
	this.group2expand = null;
	}
	};

	// address search processor
	this.ksearch_get_results = function()
	{
	var inp_value = this.ksearch_input ? this.ksearch_input.value : null;
	if (inp_value === null)
	return;

	if (this.ksearch_pane && this.ksearch_pane.is(":visible"))
	this.ksearch_pane.hide();

	// get string from current cursor pos to last comma
	var cpos = this.get_caret_pos(this.ksearch_input);
	var p = inp_value.lastIndexOf(',', cpos-1);
	var q = inp_value.substring(p+1, cpos);

	// trim query string
	q = q.replace(/(^\s+\|\s+$)/g, '');

	// Don't (re-)search if the last results are still active
	if (q == this.ksearch_value)
	return;

	var old_value = this.ksearch_value;
	this.ksearch_value = q;

	// ...string is empty
	if (!q.length)
	return;

	// ...new search value contains old one and previous search result was empty
	if (old_value && old_value.length && this.env.contacts && !this.env.contacts.length && q.indexOf(old_value) == 0)
	return;

	var lock = this.display_message(this.get_label('searching'), 'loading');
	this.http_post('autocomplete', '_search='+urlencode(q), lock);
	};

	this.ksearch_query_results = function(results, search)
	{
	// ignore this outdated search response
	if (this.ksearch_value && search != this.ksearch_value)
	return;

	this.env.contacts = results ? results : [];
	this.ksearch_display_results(this.env.contacts);
	};

	this.ksearch_display_results = function (a_results)
	{
	// display search results
	if (a_results.length && this.ksearch_input && this.ksearch_value) {
	var p, ul, li, text, s_val = this.ksearch_value;

	// create results pane if not present
	if (!this.ksearch_pane) {
	ul = $('<ul>');
	this.ksearch_pane = $('<div>').attr('id', 'rcmKSearchpane').css({ position:'absolute', 'z-index':30000 }).append(ul).appendTo(document.body);
	this.ksearch_pane.__ul = ul[0];
	}

	// remove all search results
	ul = this.ksearch_pane.__ul;
	ul.innerHTML = '';

	// add each result line to list
	for (i=0; i < a_results.length; i++) {
	text = typeof a_results[i] == 'object' ? a_results[i].name : a_results[i];
	li = document.createElement('LI');
	li.innerHTML = text.replace(new RegExp('('+RegExp.escape(s_val)+')', 'ig'), '##$1%%').replace(/</g, '<').replace(/>/g, '>').replace(/##([^%]+)%%/g, '<b>$1</b>');
	li.onmouseover = function(){ ref.ksearch_select(this); };
	li.onmouseup = function(){ ref.ksearch_click(this) };
	li._rcm_id = i;
	ul.appendChild(li);
	}

	// select the first
	$(ul.firstChild).attr('id', 'rcmksearchSelected').addClass('selected');
	this.ksearch_selected = 0;

	// move the results pane right under the input box and make it visible
	var pos = $(this.ksearch_input).offset();
	this.ksearch_pane.css({ left:pos.left+'px', top:(pos.top + this.ksearch_input.offsetHeight)+'px' }).show();
	}
	// hide results pane
	else
	this.ksearch_hide();
	};

	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_value = '';
	this.ksearch_input = null;
	this.ksearch_hide();
	};


	this.ksearch_hide = function()
	{
	this.ksearch_selected = null;

	if (this.ksearch_pane)
	this.ksearch_pane.hide();
	};


	/*********************************************************/
	/******* 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, frame, ref = this;
	if (id = list.get_single_selection())
	this.preview_timer = window.setTimeout(function(){ ref.load_contact(id, 'show'); }, 200);
	else if (this.env.contentframe)
	this.show_contentframe(false);

	this.enable_command('compose', list.selection.length > 0);
	this.enable_command('edit', (id && this.env.address_sources && !this.env.address_sources[this.env.source].readonly) ? true : false);
	this.enable_command('delete', list.selection.length && this.env.address_sources && !this.env.address_sources[this.env.source].readonly);

	return false;
	};

	this.list_contacts = function(src, group, page)
	{
	var add_url = '',
	target = window;

	if (!src)
	src = this.env.source;

	if (page && this.current_page == page && src == this.env.source && group == this.env.group)
	return false;

	if (src != this.env.source) {
	page = this.env.current_page = 1;
	this.reset_qsearch();
	}
	else if (group != this.env.group)
	page = this.env.current_page = 1;

	this.select_folder((group ? 'G'+src+group : src), (this.env.group ? 'G'+this.env.source+this.env.group : this.env.source));

	this.env.source = src;
	this.env.group = group;

	// load contacts remotely
	if (this.gui_objects.contactslist) {
	this.list_contacts_remote(src, group, page);
	return;
	}

	if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
	target = window.frames[this.env.contentframe];
	add_url = '&_framed=1';
	}

	if (group)
	add_url += '&_gid='+group;
	if (page)
	add_url += '&_page='+page;

	// also send search request to get the correct listing
	if (this.env.search_request)
	add_url += '&_search='+this.env.search_request;

	this.set_busy(true, 'loading');
	target.location.href = this.env.comm_path + (src ? '&_source='+urlencode(src) : '') + add_url;
	};

	// send remote request to load contacts list
	this.list_contacts_remote = function(src, group, page)
	{
	// clear message list first
	this.contact_list.clear(true);
	this.show_contentframe(false);
	this.enable_command('delete', 'compose', false);

	// send request to server
	var url = (src ? '_source='+urlencode(src) : '') + (page ? (src?'&':'') + '_page='+page : ''),
	lock = this.set_busy(true, 'loading');

	this.env.source = src;
	this.env.group = group;

	if (group)
	url += '&_gid='+group;

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

	this.http_request('list', url, lock);
	};

	// load contact record
	this.load_contact = function(cid, action, framed)
	{
	var add_url = '', target = window;

	if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
	add_url = '&_framed=1';
	target = window.frames[this.env.contentframe];
	this.show_contentframe(true);
	}
	else if (framed)
	return false;

	if (action && (cid \|\| action=='add') && !this.drag_active) {
	if (this.env.group)
	add_url += '&_gid='+urlencode(this.env.group);

	this.set_busy(true);
	target.location.href = this.env.comm_path+'&_action='+action+'&_source='+urlencode(this.env.source)+'&_cid='+urlencode(cid) + add_url;
	}
	return true;
	};

	// copy a contact to the specified target (group or directory)
	this.copy_contact = function(cid, to)
	{
	if (!cid)
	cid = this.contact_list.get_selection().join(',');

	if (to.type == 'group' && to.source == this.env.source) {
	this.http_post('group-addmembers', '_cid='+urlencode(cid)
	+ '&_source='+urlencode(this.env.source)
	+ '&_gid='+urlencode(to.id));
	}
	else if (to.type == 'group' && !this.env.address_sources[to.source].readonly) {
	this.http_post('copy', '_cid='+urlencode(cid)
	+ '&_source='+urlencode(this.env.source)
	+ '&_to='+urlencode(to.source)
	+ '&_togid='+urlencode(to.id)
	+ (this.env.group ? '&_gid='+urlencode(this.env.group) : ''));
	}
	else if (to.id != this.env.source && cid && this.env.address_sources[to.id] && !this.env.address_sources[to.id].readonly) {
	this.http_post('copy', '_cid='+urlencode(cid)
	+ '&_source='+urlencode(this.env.source)
	+ '&_to='+urlencode(to.id)
	+ (this.env.group ? '&_gid='+urlencode(this.env.group) : ''));
	}
	};

	this.delete_contacts = function()
	{
	// exit if no mailbox specified or if selection is empty
	var selection = this.contact_list.get_selection();
	if (!(selection.length \|\| this.env.cid) \|\| !confirm(this.get_label('deletecontactconfirm')))
	return;

	var id, a_cids = [], qs = '';

	if (this.env.cid)
	a_cids.push(this.env.cid);
	else {
	for (var 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);
	}

	// also send search request to get the right records from the next page
	if (this.env.search_request)
	qs += '&_search='+this.env.search_request;

	// send request to server
	this.http_post('delete', '_cid='+urlencode(a_cids.join(','))+'&_source='+urlencode(this.env.source)+'&_from='+(this.env.action ? this.env.action : '')+qs);

	return true;
	};

	// update a contact record in the list
	this.update_contact_row = function(cid, cols_arr, newcid)
	{
	var row;
	if (this.contact_list.rows[cid] && (row = this.contact_list.rows[cid].obj)) {
	for (var c=0; c<cols_arr.length; c++)
	if (row.cells[c])
	$(row.cells[c]).html(cols_arr[c]);

	// cid change
	if (newcid) {
	row.id = 'rcmrow' + newcid;
	this.contact_list.remove_row(cid);
	this.contact_list.init_row(row);
	this.contact_list.selection[0] = newcid;
	row.style.display = '';
	}

	return true;
	}

	return false;
	};

	// add row to contacts list
	this.add_contact_row = function(cid, cols, select)
	{
	if (!this.gui_objects.contactslist \|\| !this.gui_objects.contactslist.tBodies[0])
	return false;

	var tbody = this.gui_objects.contactslist.tBodies[0],
	rowcount = tbody.rows.length,
	even = rowcount%2,
	row = document.createElement('tr');

	row.id = 'rcmrow'+cid;
	row.className = 'contact '+(even ? 'even' : 'odd');

	if (this.contact_list.in_selection(cid))
	row.className += ' selected';

	// add each submitted col
	for (var c in cols) {
	col = document.createElement('td');
	col.className = String(c).toLowerCase();
	col.innerHTML = cols[c];
	row.appendChild(col);
	}

	this.contact_list.insert_row(row);

	this.enable_command('export', (this.contact_list.rowcount > 0));
	};

	this.group_create = function()
	{
	if (!this.gui_objects.folderlist \|\| !this.env.address_sources[this.env.source].groups)
	return;

	if (!this.name_input) {
	this.name_input = $('<input>').attr('type', 'text');
	this.name_input.bind('keydown', function(e){ return rcmail.add_input_keydown(e); });
	this.name_input_li = $('<li>').addClass('contactgroup').append(this.name_input);

	var li = this.get_folder_li(this.env.source)
	this.name_input_li.insertAfter(li);
	}

	this.name_input.select().focus();
	};

	this.group_rename = function()
	{
	if (!this.env.group \|\| !this.gui_objects.folderlist)
	return;

	if (!this.name_input) {
	this.enable_command('list', 'listgroup', false);
	this.name_input = $('<input>').attr('type', 'text').val(this.env.contactgroups['G'+this.env.source+this.env.group].name);
	this.name_input.bind('keydown', function(e){ return rcmail.add_input_keydown(e); });
	this.env.group_renaming = true;

	var link, li = this.get_folder_li(this.env.source+this.env.group, 'rcmliG');
	if (li && (link = li.firstChild)) {
	$(link).hide().before(this.name_input);
	}
	}

	this.name_input.select().focus();
	};

	this.group_delete = function()
	{
	if (this.env.group)
	this.http_post('group-delete', '_source='+urlencode(this.env.source)+'&_gid='+urlencode(this.env.group), true);
	};

	// callback from server upon group-delete command
	this.remove_group_item = function(prop)
	{
	var li, key = 'G'+prop.source+prop.id;
	if ((li = this.get_folder_li(key))) {
	this.triggerEvent('group_delete', { source:prop.source, id:prop.id, li:li });

	li.parentNode.removeChild(li);
	delete this.env.contactfolders[key];
	delete this.env.contactgroups[key];
	}

	this.list_contacts(prop.source, 0);
	};

	// handler for keyboard events on the input field
	this.add_input_keydown = function(e)
	{
	var key = rcube_event.get_keycode(e);

	// enter
	if (key == 13) {
	var newname = this.name_input.val();

	if (newname) {
	var lock = this.set_busy(true, 'loading');
	if (this.env.group_renaming)
	this.http_post('group-rename', '_source='+urlencode(this.env.source)+'&_gid='+urlencode(this.env.group)+'&_name='+urlencode(newname), lock);
	else
	this.http_post('group-create', '_source='+urlencode(this.env.source)+'&_name='+urlencode(newname), lock);
	}
	return false;
	}
	// escape
	else if (key == 27)
	this.reset_add_input();

	return true;
	};

	this.reset_add_input = function()
	{
	if (this.name_input) {
	if (this.env.group_renaming) {
	var li = this.name_input.parent();
	li.children().last().show();
	this.env.group_renaming = false;
	}

	this.name_input.remove();

	if (this.name_input_li)
	this.name_input_li.remove();

	this.name_input = this.name_input_li = null;
	}

	this.enable_command('list', 'listgroup', true);
	};

	// callback for creating a new contact group
	this.insert_contact_group = function(prop)
	{
	this.reset_add_input();

	prop.type = 'group';
	var key = 'G'+prop.source+prop.id;
	this.env.contactfolders[key] = this.env.contactgroups[key] = prop;

	var link = $('<a>').attr('href', '#')
	.bind('click', function() { return rcmail.command('listgroup', prop, this);})
	.html(prop.name);
	var li = $('<li>').attr('id', 'rcmli'+key)
	.addClass('contactgroup')
	.append(link)
	.insertAfter(this.get_folder_li(prop.source));

	this.triggerEvent('group_insert', { id:prop.id, source:prop.source, name:prop.name, li:li[0] });
	};

	// callback for renaming a contact group
	this.update_contact_group = function(prop)
	{
	this.reset_add_input();

	var key = 'G'+prop.source+prop.id, link, li = this.get_folder_li(key);

	if (li && (link = li.firstChild) && link.tagName.toLowerCase() == 'a')
	link.innerHTML = prop.name;

	this.env.contactfolders[key].name = this.env.contactgroups[key].name = prop.name;
	this.triggerEvent('group_update', { id:prop.id, source:prop.source, name:prop.name, li:li[0] });
	};


	/*********************************************************/
	/******* user settings methods *******/
	/*********************************************************/

	this.init_subscription_list = function()
	{
	var p = this;
	this.subscription_list = new rcube_list_widget(this.gui_objects.subscriptionlist, {multiselect:false, draggable:true, keyboard:false, toggleselect:true});
	this.subscription_list.addEventListener('select', function(o){ p.subscription_select(o); });
	this.subscription_list.addEventListener('dragstart', function(o){ p.drag_active = true; });
	this.subscription_list.addEventListener('dragend', function(o){ p.subscription_move_folder(o); });
	this.subscription_list.row_init = function (row) {
	var anchors = row.obj.getElementsByTagName('a');
	if (anchors[0])
	anchors[0].onclick = function() { p.command('rename-folder', row.id); return false; };
	if (anchors[1])
	anchors[1].onclick = function() { p.command('delete-folder', row.id); return false; };
	row.obj.onmouseover = function() { p.focus_subscription(row.id); };
	row.obj.onmouseout = function() { p.unfocus_subscription(row.id); };
	};
	this.subscription_list.init();
	};

	// preferences section select and load options frame
	this.section_select = function(list)
	{
	var id = list.get_single_selection();

	if (id) {
	var add_url = '', target = window;
	this.set_busy(true);

	if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
	add_url = '&_framed=1';
	target = window.frames[this.env.contentframe];
	}
	target.location.href = this.env.comm_path+'&_action=edit-prefs&_section='+id+add_url;
	}

	return true;
	};

	this.identity_select = function(list)
	{
	var id;
	if (id = list.get_single_selection())
	this.load_identity(id, 'edit-identity');
	};

	// load identity record
	this.load_identity = function(id, action)
	{
	if (action=='edit-identity' && (!id \|\| id==this.env.iid))
	return false;

	var add_url = '', target = window;

	if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
	add_url = '&_framed=1';
	target = window.frames[this.env.contentframe];
	document.getElementById(this.env.contentframe).style.visibility = 'inherit';
	}

	if (action && (id \|\| action=='add-identity')) {
	this.set_busy(true);
	target.location.href = this.env.comm_path+'&_action='+action+'&_iid='+id+add_url;
	}

	return true;
	};

	this.delete_identity = function(id)
	{
	// exit if no mailbox 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];

	// append token to request
	this.goto_url('delete-identity', '_iid='+id+'&_token='+this.env.request_token, true);

	return true;
	};

	this.focus_subscription = function(id)
	{
	var row, folder,
	reg = RegExp('['+RegExp.escape(this.env.delimiter)+']?[^'+RegExp.escape(this.env.delimiter)+']+$');

	if (this.drag_active && this.env.folder && (row = document.getElementById(id)))
	if (this.env.subscriptionrows[id] &&
	(folder = this.env.subscriptionrows[id][0])) {
	if (this.check_droptarget(folder) &&
	!this.env.subscriptionrows[this.get_folder_row_id(this.env.folder)][2] &&
	(folder != this.env.folder.replace(reg, '')) &&
	(!folder.match(new RegExp('^'+RegExp.escape(this.env.folder+this.env.delimiter))))) {
	this.set_env('dstfolder', folder);
	$(row).addClass('droptarget');
	}
	}
	else if (this.env.folder.match(new RegExp(RegExp.escape(this.env.delimiter)))) {
	this.set_env('dstfolder', this.env.delimiter);
	$(this.subscription_list.frame).addClass('droptarget');
	}
	};

	this.unfocus_subscription = function(id)
	{
	var row = $('#'+id);

	this.set_env('dstfolder', null);
	if (this.env.subscriptionrows[id] && row[0])
	row.removeClass('droptarget');
	else
	$(this.subscription_list.frame).removeClass('droptarget');
	};

	this.subscription_select = function(list)
	{
	var id, folder;
	if ((id = list.get_single_selection()) &&
	this.env.subscriptionrows['rcmrow'+id] &&
	(folder = this.env.subscriptionrows['rcmrow'+id][0]))
	this.set_env('folder', folder);
	else
	this.set_env('folder', null);

	if (this.gui_objects.createfolderhint)
	$(this.gui_objects.createfolderhint).html(this.env.folder ? this.get_label('addsubfolderhint') : '');
	};

	this.subscription_move_folder = function(list)
	{
	var reg = RegExp('['+RegExp.escape(this.env.delimiter)+']?[^'+RegExp.escape(this.env.delimiter)+']+$');
	if (this.env.folder && this.env.dstfolder && (this.env.dstfolder != this.env.folder) &&
	(this.env.dstfolder != this.env.folder.replace(reg, ''))) {
	var reg = new RegExp('[^'+RegExp.escape(this.env.delimiter)+']*['+RegExp.escape(this.env.delimiter)+']', 'g');
	var basename = this.env.folder.replace(reg, '');
	var newname = this.env.dstfolder==this.env.delimiter ? basename : this.env.dstfolder+this.env.delimiter+basename;

	var lock = this.set_busy(true, 'foldermoving');
	this.http_post('rename-folder', '_folder_oldname='+urlencode(this.env.folder)+'&_folder_newname='+urlencode(newname), lock);
	}
	this.drag_active = false;
	this.unfocus_subscription(this.get_folder_row_id(this.env.dstfolder));
	};

	// tell server to create and subscribe a new mailbox
	this.create_folder = function(name)
	{
	if (this.edit_folder)
	this.reset_folder_rename();

	var form;
	if ((form = this.gui_objects.editform) && form.elements['_folder_name']) {
	name = form.elements['_folder_name'].value;

	if (name.indexOf(this.env.delimiter)>=0) {
	alert(this.get_label('forbiddencharacter')+' ('+this.env.delimiter+')');
	return false;
	}

	if (this.env.folder && name != '')
	name = this.env.folder+this.env.delimiter+name;

	var lock = this.set_busy(true, 'foldercreating');
	this.http_post('create-folder', '_name='+urlencode(name), lock);
	}
	else if (form.elements['_folder_name'])
	form.elements['_folder_name'].focus();
	};

	// start renaming the mailbox name.
	// this will replace the name string with an input field
	this.rename_folder = function(id)
	{
	var temp, row, form;

	// reset current renaming
	if (temp = this.edit_folder) {
	this.reset_folder_rename();
	if (temp == id)
	return;
	}

	if (id && this.env.subscriptionrows[id] && (row = document.getElementById(id))) {
	var reg = new RegExp('.*['+RegExp.escape(this.env.delimiter)+']');
	this.name_input = document.createElement('input');
	this.name_input.type = 'text';
	this.name_input.value = this.env.subscriptionrows[id][0].replace(reg, '');

	reg = new RegExp('['+RegExp.escape(this.env.delimiter)+']?[^'+RegExp.escape(this.env.delimiter)+']+$');
	this.name_input.__parent = this.env.subscriptionrows[id][0].replace(reg, '');
	this.name_input.onkeydown = function(e){ rcmail.name_input_keydown(e); };

	row.cells[0].replaceChild(this.name_input, row.cells[0].firstChild);
	this.edit_folder = id;
	this.name_input.select();

	if (form = this.gui_objects.editform)
	form.onsubmit = function(){ return false; };
	}
	};

	// remove the input field and write the current mailbox name to the table cell
	this.reset_folder_rename = function()
	{
	var cell = this.name_input ? this.name_input.parentNode : null;

	if (cell && this.edit_folder && this.env.subscriptionrows[this.edit_folder])
	$(cell).html(this.env.subscriptionrows[this.edit_folder][1]);

	this.edit_folder = null;
	};

	// handler for keyboard events on the input field
	this.name_input_keydown = function(e)
	{
	var key = rcube_event.get_keycode(e);

	// enter
	if (key==13) {
	var newname = this.name_input ? this.name_input.value : null;
	if (this.edit_folder && newname) {
	if (newname.indexOf(this.env.delimiter)>=0) {
	alert(this.get_label('forbiddencharacter')+' ('+this.env.delimiter+')');
	return false;
	}

	if (this.name_input.__parent)
	newname = this.name_input.__parent + this.env.delimiter + newname;

	var lock = this.set_busy(true, 'folderrenaming');
	this.http_post('rename-folder', '_folder_oldname='+urlencode(this.env.subscriptionrows[this.edit_folder][0])+'&_folder_newname='+urlencode(newname), lock);
	}
	}
	// escape
	else if (key==27)
	this.reset_folder_rename();
	};

	// delete a specific mailbox with all its messages
	this.delete_folder = function(id)
	{
	var folder = this.env.subscriptionrows[id][0];

	if (this.edit_folder)
	this.reset_folder_rename();

	if (folder && confirm(this.get_label('deletefolderconfirm'))) {
	var lock = this.set_busy(true, 'folderdeleting');
	this.http_post('delete-folder', '_mboxes='+urlencode(folder), lock);
	this.set_env('folder', null);

	$(this.gui_objects.createfolderhint).html('');
	}
	};

	// add a new folder to the subscription list by cloning a folder row
	this.add_folder_row = function(name, display_name, replace, before)
	{
	if (!this.gui_objects.subscriptionlist)
	return false;

	// find not protected folder
	var refid;
	for (var rid in this.env.subscriptionrows) {
	if (this.env.subscriptionrows[rid]!=null && !this.env.subscriptionrows[rid][2]) {
	refid = rid;
	break;
	}
	}

	var refrow, form,
	tbody = this.gui_objects.subscriptionlist.tBodies[0],
	id = 'rcmrow'+(tbody.childNodes.length+1),
	selection = this.subscription_list.get_single_selection();

	if (replace && replace.id) {
	id = replace.id;
	refid = replace.id;
	}

	if (!id \|\| !refid \|\| !(refrow = document.getElementById(refid))) {
	// Refresh page if we don't have a table row to clone
	this.goto_url('folders');
	return false;
	}

	// clone a table row if there are existing rows
	var row = this.clone_table_row(refrow);
	row.id = id;

	if (before && (before = this.get_folder_row_id(before)))
	tbody.insertBefore(row, document.getElementById(before));
	else
	tbody.appendChild(row);

	if (replace)
	tbody.removeChild(replace);

	// add to folder/row-ID map
	this.env.subscriptionrows[row.id] = [name, display_name, 0];

	// set folder name
	row.cells[0].innerHTML = display_name;

	if (!replace) {
	// set messages count to zero
	row.cells[1].innerHTML = '*';

	// update subscription/threading checkboxes
	$('input[name="_subscribed[]"]', row).val(name).attr('checked', true);
	$('input[name="_threaded[]"]', row).val(name).attr('checked', false);

	var elem;
	// add new folder to rename-folder list and clear input field
	if (form = this.gui_objects.editform) {
	if (elem = form.elements['_folder_oldname'])
	elem.options[elem.options.length] = new Option(name, name);
	if (elem = form.elements['_folder_name'])
	elem.value = '';
	}
	}

	this.init_subscription_list();
	if (selection && document.getElementById('rcmrow'+selection))
	this.subscription_list.select_row(selection);

	if (document.getElementById(id).scrollIntoView)
	document.getElementById(id).scrollIntoView();
	};

	// replace an existing table row with a new folder line
	this.replace_folder_row = function(oldfolder, newfolder, display_name, before)
	{
	var form, elm,
	id = this.get_folder_row_id(oldfolder),
	row = document.getElementById(id);

	// replace an existing table row (if found)
	this.add_folder_row(newfolder, display_name, row, before);

	// rename folder in rename-folder dropdown
	if ((form = this.gui_objects.editform) && (elm = form.elements['_folder_oldname'])) {
	for (var i=0; i<elm.options.length; i++) {
	if (elm.options[i].value == oldfolder) {
	elm.options[i].text = display_name;
	elm.options[i].value = newfolder;
	break;
	}
	}

	form.elements['_folder_newname'].value = '';
	}
	};

	// remove the table row of a specific mailbox from the table
	// (the row will not be removed, just hidden)
	this.remove_folder_row = function(folder)
	{
	var form, elm, row, id = this.get_folder_row_id(folder);

	if (id && (row = document.getElementById(id)))
	row.style.display = 'none';

	// remove folder from rename-folder list
	if ((form = this.gui_objects.editform) && (elm = form.elements['_folder_oldname'])) {
	for (var i=0; i<elm.options.length; i++) {
	if (elm.options[i].value == folder) {
	elm.options[i] = null;
	break;
	}
	}
	}

	if (form && (elm = form.elements['_folder_newname']))
	elm.value = '';
	};

	this.subscribe = function(folder)
	{
	if (folder)
	this.http_post('subscribe', '_mbox='+urlencode(folder));
	};

	this.unsubscribe = function(folder)
	{
	if (folder)
	this.http_post('unsubscribe', '_mbox='+urlencode(folder));
	};

	this.enable_threading = function(folder)
	{
	if (folder)
	this.http_post('enable-threading', '_mbox='+urlencode(folder));
	};

	this.disable_threading = function(folder)
	{
	if (folder)
	this.http_post('disable-threading', '_mbox='+urlencode(folder));
	};

	// helper method to find a specific mailbox row ID
	this.get_folder_row_id = function(folder)
	{
	for (var id in this.env.subscriptionrows)
	if (this.env.subscriptionrows[id] && this.env.subscriptionrows[id][0] == folder)
	break;

	return id;
	};

	// duplicate a specific table row
	this.clone_table_row = function(row)
	{
	var cell, td,
	new_row = document.createElement('tr');

	for(var n=0; n<row.cells.length; n++) {
	cell = row.cells[n];
	td = document.createElement('td');

	if (cell.className)
	td.className = cell.className;
	if (cell.align)
	td.setAttribute('align', cell.align);

	td.innerHTML = cell.innerHTML;
	new_row.appendChild(td);
	}

	return new_row;
	};


	/*********************************************************/
	/******* GUI functionality *******/
	/*********************************************************/

	// 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));
	};

	// 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++) {
	var prop = this.buttons[cmd][i];
	var elm = document.getElementById(prop.id);
	if (!elm)
	continue;

	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 rcmail.button_sel(this._command, this._id); };
	elm.onmouseup = function(e){ return rcmail.button_out(this._command, this._id); };
	if (preload)
	new Image().src = prop.sel;
	}
	if (prop.over) {
	elm.onmouseover = function(e){ return rcmail.button_over(this._command, this._id); };
	elm.onmouseout = function(e){ return rcmail.button_out(this._command, this._id); };
	if (preload)
	new Image().src = prop.over;
	}
	}
	}
	};

	// set button to a specific state
	this.set_button = function(command, state)
	{
	var button, obj, a_buttons = this.buttons[command];

	if (!a_buttons \|\| !a_buttons.length)
	return false;

	for (var n=0; n<a_buttons.length; n++) {
	button = a_buttons[n];
	obj = document.getElementById(button.id);

	// get default/passive setting of the button
	if (obj && 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 (obj && !button.status)
	button.pas = String(obj.className);

	// set image according to button state
	if (obj && button.type=='image' && button[state]) {
	button.status = state;
	obj.src = button[state];
	}
	// set class name according to button state
	else if (obj && typeof(button[state])!='undefined') {
	button.status = state;
	obj.className = button[state];
	}
	// disable/enable input buttons
	if (obj && button.type=='input') {
	button.status = state;
	obj.disabled = !state;
	}
	}
	};

	// display a specific alttext
	this.set_alttext = function(command, label)
	{
	if (!this.buttons[command] \|\| !this.buttons[command].length)
	return;

	var button, obj, link;
	for (var n=0; n<this.buttons[command].length; n++) {
	button = this.buttons[command][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)
	{
	var button, elm, a_buttons = this.buttons[command];

	if (!a_buttons \|\| !a_buttons.length)
	return false;

	for (var n=0; n<a_buttons.length; n++) {
	button = a_buttons[n];
	if (button.id == id && button.status == 'act') {
	elm = document.getElementById(button.id);
	if (elm && button.over) {
	if (button.type == 'image')
	elm.src = button.over;
	else
	elm.className = button.over;
	}
	}
	}
	};

	// mouse down on button
	this.button_sel = function(command, id)
	{
	var button, elm, a_buttons = this.buttons[command];

	if (!a_buttons \|\| !a_buttons.length)
	return;

	for (var n=0; n<a_buttons.length; n++) {
	button = a_buttons[n];
	if (button.id == id && button.status == 'act') {
	elm = document.getElementById(button.id);
	if (elm && button.sel) {
	if (button.type == 'image')
	elm.src = button.sel;
	else
	elm.className = button.sel;
	}
	this.buttons_sel[id] = command;
	}
	}
	};

	// mouse out of button
	this.button_out = function(command, id)
	{
	var button, elm, a_buttons = this.buttons[command];

	if (!a_buttons \|\| !a_buttons.length)
	return;

	for (var n=0; n<a_buttons.length; n++) {
	button = a_buttons[n];
	if (button.id == id && button.status == 'act') {
	elm = document.getElementById(button.id);
	if (elm && button.act) {
	if (button.type == 'image')
	elm.src = button.act;
	else
	elm.className = button.act;
	}
	}
	}
	};

	// 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)
	{
	// pass command to parent window
	if (this.env.framed && parent.rcmail)
	return parent.rcmail.display_message(msg, type);

	if (!this.gui_objects.message) {
	// save message in order to display after page loaded
	if (type != 'loading')
	this.pending_message = new Array(msg, type);
	return false;
	}

	type = type ? type : 'notice';

	var date = new Date(),
	id = type + date.getTime();

	if (type == 'loading') {
	if (!msg)
	msg = this.get_label('loading');

	// The same message of type 'loading' is already displayed
	if (this.messages[msg]) {
	this.messages[msg].elements.push(id);
	return id;
	}
	}

	var ref = this,
	obj = $('<div>').addClass(type).html(msg),
	cont = $(this.gui_objects.message).show();

	if (type == 'loading') {
	obj.appendTo(cont);
	this.messages[msg] = {'obj': obj, 'elements': [id]};
	window.setTimeout(function() { rcmail.hide_message(id); }, this.env.request_timeout * 1000);
	return id;
	}
	else {
	obj.appendTo(cont).bind('mousedown', function(){ return ref.hide_message(obj); });
	window.setTimeout(function(){ ref.hide_message(obj, true); }, this.message_time);
	return obj;
	}
	};

	// make a message to disapear
	this.hide_message = function(obj, fade)
	{
	// pass command to parent window
	if (this.env.framed && parent.rcmail)
	return parent.rcmail.hide_message(obj, fade);

	if (typeof(obj) == 'object') {
	// custom message
	$(obj)[fade?'fadeOut':'hide']();
	}
	else {
	// 'loading' message
	var k, n, m = this.messages;
	for (k in m) {
	for (n in m[k].elements) {
	if (m[k] && m[k].elements[n] == obj) {
	m[k].elements.splice(n, 1);
	if (!m[k].elements.length) {
	m[k].obj[fade?'fadeOut':'hide']();
	delete m[k];
	}
	}
	}
	}
	}
	};

	// mark a mailbox as selected and set environment variable
	this.select_folder = function(name, old, prefix)
	{
	if (this.gui_objects.folderlist) {
	var current_li, target_li;

	if ((current_li = this.get_folder_li(old, prefix))) {
	$(current_li).removeClass('selected').removeClass('unfocused');
	}
	if ((target_li = this.get_folder_li(name, prefix))) {
	$(target_li).removeClass('unfocused').addClass('selected');
	}

	// trigger event hook
	this.triggerEvent('selectfolder', { folder:name, old:old, prefix:prefix });
	}
	};

	// helper method to find a folder list item
	this.get_folder_li = function(name, prefix)
	{
	if (!prefix)
	prefix = 'rcmli';

	if (this.gui_objects.folderlist) {
	name = String(name).replace(this.identifier_expr, '_');
	return document.getElementById(prefix+name);
	}

	return null;
	};

	// for reordering column array (Konqueror workaround)
	// and for setting some message list global variables
	this.set_message_coltypes = function(coltypes, repl)
	{
	this.env.coltypes = coltypes;

	// set correct list titles
	var thead = this.gui_objects.messagelist ? this.gui_objects.messagelist.tHead : null,
	cell, col, n, len;

	// replace old column headers
	if (thead) {
	if (repl) {
	var th = document.createElement('thead'),
	tr = document.createElement('tr');
	for (c=0, len=repl.length; c < len; c++) {
	cell = document.createElement('td');
	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);
	}
	th.appendChild(tr);
	thead.parentNode.replaceChild(th, thead);
	}

	for (n=0, len=this.env.coltypes.length; n<len; n++) {
	col = this.env.coltypes[n];
	if ((cell = thead.rows[0].cells[n]) && (col=='from' \|\| col=='to')) {
	cell.id = 'rcm'+col;
	// if we have links for sorting, it's a bit more complicated...
	if (cell.firstChild && cell.firstChild.tagName.toLowerCase()=='a') {
	cell = cell.firstChild;
	cell.onclick = function(){ return rcmail.command('sort', this.__col, this); };
	cell.__col = col;
	}
	cell.innerHTML = this.get_label(col);
	}
	}
	}

	this.env.subject_col = null;
	this.env.flagged_col = null;
	this.env.status_col = null;

	if ((n = $.inArray('subject', this.env.coltypes)) >= 0) {
	this.set_env('subject_col', n);
	if (this.message_list)
	this.message_list.subject_col = n;
	}
	if ((n = $.inArray('flag', this.env.coltypes)) >= 0)
	this.set_env('flagged_col', n);
	if ((n = $.inArray('status', this.env.coltypes)) >= 0)
	this.set_env('status_col', n);

	this.message_list.init_header();
	};

	// replace content of row count display
	this.set_rowcount = function(text)
	{
	$(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 (content && this.gui_objects.quotadisplay) {
	if (typeof(content) == 'object' && content.type == 'image')
	this.percent_indicator(this.gui_objects.quotadisplay, content);
	else
	$(this.gui_objects.quotadisplay).html(content);
	}
	};

	// update the mailboxlist
	this.set_unread_count = function(mbox, count, set_title)
	{
	if (!this.gui_objects.mailboxlist)
	return false;

	this.env.unread_counts[mbox] = count;
	this.set_unread_count_display(mbox, set_title);
	};

	// update the mailbox count display
	this.set_unread_count_display = function(mbox, set_title)
	{
	var reg, text_obj, item, mycount, childcount, div;

	if (item = this.get_folder_li(mbox)) {
	mycount = this.env.unread_counts[mbox] ? this.env.unread_counts[mbox] : 0;
	text_obj = item.getElementsByTagName('a')[0];
	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.indexOf(mbox + this.env.delimiter) == 0)
	childcount += this.env.unread_counts[k];
	}

	if (mycount && text_obj.innerHTML.match(reg))
	text_obj.innerHTML = text_obj.innerHTML.replace(reg, ' ('+mycount+')');
	else if (mycount)
	text_obj.innerHTML += ' ('+mycount+')';
	else
	text_obj.innerHTML = text_obj.innerHTML.replace(reg, '');

	// 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);
	}
	};

	// notifies that a new message(s) has hit the mailbox
	this.new_message_focus = function()
	{
	// focus main window
	if (this.env.framed && window.parent)
	window.parent.focus();
	else
	window.focus();
	};

	this.toggle_prefer_html = function(checkbox)
	{
	var elem;
	if (elem = document.getElementById('rcmfd_addrbook_show_images'))
	elem.disabled = !checkbox.checked;
	};

	this.toggle_preview_pane = function(checkbox)
	{
	var elem;
	if (elem = document.getElementById('rcmfd_preview_pane_mark_read'))
	elem.disabled = !checkbox.checked;
	};

	// display fetched raw headers
	this.set_headers = function(content)
	{
	if (this.gui_objects.all_headers_row && 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.load_headers = function(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() { rcmail.hide_headers(elem); };

	// fetch headers only once
	if (!this.gui_objects.all_headers_box.innerHTML) {
	var lock = this.display_message(this.get_label('loading'), 'loading');
	this.http_post('headers', '_uid='+this.env.uid, lock);
	}
	};

	// hide all-headers row
	this.hide_headers = function(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() { rcmail.load_headers(elem); };
	};

	// percent (quota) indicator
	this.percent_indicator = function(obj, data)
	{
	if (!data \|\| !obj)
	return false;

	var limit_high = 80,
	limit_mid = 55,
	width = data.width ? data.width : this.env.indicator_width ? this.env.indicator_width : 100,
	height = data.height ? data.height : this.env.indicator_height ? this.env.indicator_height : 14,
	quota = data.percent ? Math.abs(parseInt(data.percent)) : 0,
	quota_width = parseInt(quota / 100 * width),
	pos = $(obj).position();

	// Opera bug?
	pos.top = Math.max(0, pos.top);

	this.env.indicator_width = width;
	this.env.indicator_height = height;

	// overlimit
	if (quota_width > width) {
	quota_width = width;
	quota = 100;
	}

	if (data.title)
	data.title = this.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_normal');
	bar1.addClass('quota_low');
	}

	// replace quota image
	$(obj).html('').append(bar1).append(bar2).append(main);
	// update #quotaimg title
	$('#quotaimg').attr('title', data.title);
	};

	/********************************************************/
	/******* html to text conversion functions *******/
	/********************************************************/

	this.html2plain = function(htmlText, id)
	{
	var rcmail = this,
	url = '?_task=utils&_action=html2text',
	lock = this.set_busy(true, 'converting');

	console.log('HTTP POST: ' + url);

	$.ajax({ type: 'POST', url: url, data: htmlText, contentType: 'application/octet-stream',
	error: function(o, status, err) { rcmail.http_error(o, status, err, lock); },
	success: function(data) { rcmail.set_busy(false, null, lock); $(document.getElementById(id)).val(data); console.log(data); }
	});
	};

	this.plain2html = function(plainText, id)
	{
	var lock = this.set_busy(true, 'converting');
	$(document.getElementById(id)).val('<pre>'+plainText+'</pre>');
	this.set_busy(false, null, lock);
	};


	/********************************************************/
	/******* remote request methods *******/
	/********************************************************/

	this.redirect = function(url, lock)
	{
	if (lock \|\| lock === null)
	this.set_busy(true);

	if (this.env.framed && window.parent)
	parent.location.href = url;
	else
	location.href = url;
	};

	this.goto_url = function(action, query, lock)
	{
	var url = this.env.comm_path,
	querystring = query ? '&'+query : '';

	// overwrite task name
	if (action.match(/([a-z]+)\/([a-z-_]+)/)) {
	action = RegExp.$2;
	url = url.replace(/\_task=[a-z]+/, '_task='+RegExp.$1);
	}

	this.redirect(url+'&_action='+action+querystring, lock);
	};

	// send a http request to the server
	this.http_request = function(action, query, lock)
	{
	var url = this.env.comm_path;

	// overwrite task name
	if (action.match(/([a-z]+)\/([a-z-_]+)/)) {
	action = RegExp.$2;
	url = url.replace(/\_task=[a-z]+/, '_task='+RegExp.$1);
	}

	// trigger plugin hook
	var result = this.triggerEvent('request'+action, query);

	if (typeof result != 'undefined') {
	// abort if one the handlers returned false
	if (result === false)
	return false;
	else
	query = result;
	}

	url += '&_remote=1&_action=' + action + (query ? '&' : '') + query;

	// send request
	console.log('HTTP GET: ' + url);
	$.ajax({
	type: 'GET', url: url, data: { _unlock:(lock?lock:0) }, dataType: 'json',
	success: function(data){ ref.http_response(data); },
	error: function(o, status, err) { rcmail.http_error(o, status, err, lock); }
	});
	};

	// send a http POST request to the server
	this.http_post = function(action, postdata, lock)
	{
	var url = this.env.comm_path;

	// overwrite task name
	if (action.match(/([a-z]+)\/([a-z-_]+)/)) {
	action = RegExp.$2;
	url = url.replace(/\_task=[a-z]+/, '_task='+RegExp.$1);
	}

	url += '&_action=' + action;

	if (postdata && typeof(postdata) == 'object') {
	postdata._remote = 1;
	postdata._unlock = (lock ? lock : 0);
	}
	else
	postdata += (postdata ? '&' : '') + '_remote=1' + (lock ? '&_unlock='+lock : '');

	// trigger plugin hook
	var result = this.triggerEvent('request'+action, postdata);
	if (typeof result != 'undefined') {
	// abort if one the handlers returned false
	if (result === false)
	return false;
	else
	postdata = result;
	}

	// send request
	console.log('HTTP POST: ' + url);
	$.ajax({
	type: 'POST', url: url, data: postdata, dataType: 'json',
	success: function(data){ ref.http_response(data); },
	error: function(o, status, err) { rcmail.http_error(o, status, err, lock); }
	});
	};

	// handle HTTP response
	this.http_response = function(response)
	{
	if (!response)
	return;

	if (response.unlock)
	this.set_busy(false);

	this.triggerEvent('responsebefore', {response: response});
	this.triggerEvent('responsebefore'+response.action, {response: response});

	// set env vars
	if (response.env)
	this.set_env(response.env);

	// we have labels to add
	if (typeof response.texts == 'object') {
	for (var name in response.texts)
	if (typeof response.texts[name] == 'string')
	this.add_label(name, response.texts[name]);
	}

	// if we get javascript code from server -> execute it
	if (response.exec) {
	console.log(response.exec);
	eval(response.exec);
	}

	// execute callback functions of plugins
	if (response.callbacks && response.callbacks.length) {
	for (var 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 'delete':
	if (this.task == 'addressbook') {
	var uid = this.contact_list.get_selection();
	this.enable_command('compose', (uid && this.contact_list.rows[uid]));
	this.enable_command('delete', 'edit', (uid && this.contact_list.rows[uid] && this.env.address_sources && !this.env.address_sources[this.env.source].readonly));
	this.enable_command('export', (this.contact_list && this.contact_list.rowcount > 0));
	}

	case 'moveto':
	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', { folder:this.env.source, rowcount:this.contact_list.rowcount });
	}

	case 'purge':
	case 'expunge':
	if (this.task == 'mail') {
	if (!this.env.messagecount) {
	// 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', 'sort', 'expand-all', 'expand-unread', 'collapse-all', false);
	}
	if (this.message_list)
	this.triggerEvent('listupdate', { folder:this.env.mailbox, rowcount:this.message_list.rowcount });
	}
	break;

	case 'check-recent':
	case 'getunread':
	case 'search':
	case 'list':
	if (this.task == 'mail') {
	this.enable_command('show', 'expunge', 'select-all', 'select-none', 'sort', (this.env.messagecount > 0));
	this.enable_command('purge', this.purge_mailbox_test());
	this.enable_command('expand-all', 'expand-unread', 'collapse-all', this.env.threading && this.env.messagecount);

	if (response.action == 'list' \|\| response.action == 'search') {
	this.msglist_select(this.message_list);
	this.triggerEvent('listupdate', { folder:this.env.mailbox, rowcount:this.message_list.rowcount });
	}
	}
	else if (this.task == 'addressbook') {
	this.enable_command('export', (this.contact_list && this.contact_list.rowcount > 0));

	if (response.action == 'list' \|\| response.action == 'search') {
	this.enable_command('group-create',
	(this.env.address_sources[this.env.source].groups && !this.env.address_sources[this.env.source].readonly));
	this.enable_command('group-rename', 'group-delete',
	(this.env.address_sources[this.env.source].groups && this.env.group && !this.env.address_sources[this.env.source].readonly));
	this.triggerEvent('listupdate', { folder:this.env.source, 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});
	};

	// handle HTTP request errors
	this.http_error = function(request, status, err, lock)
	{
	var errmsg = request.statusText;

	this.set_busy(false, null, lock);
	request.abort();

	if (errmsg)
	this.display_message(this.get_label('servererror') + ' (' + errmsg + ')', 'error');
	};

	// starts interval for keep-alive/check-recent signal
	this.start_keepalive = function()
	{
	if (this._int)
	clearInterval(this._int);

	if (this.env.keep_alive && !this.env.framed && this.task == 'mail' && this.gui_objects.mailboxlist)
	this._int = setInterval(function(){ ref.check_for_recent(false); }, this.env.keep_alive * 1000);
	else if (this.env.keep_alive && !this.env.framed && this.task != 'login' && this.env.action != 'print')
	this._int = setInterval(function(){ ref.send_keep_alive(); }, this.env.keep_alive * 1000);
	};

	// sends keep-alive signal to the server
	this.send_keep_alive = function()
	{
	var d = new Date();
	this.http_request('keep-alive', '_t='+d.getTime());
	};

	// sends request to check for recent messages
	this.check_for_recent = function(refresh)
	{
	if (this.busy)
	return;

	var lock, addurl = '_t=' + (new Date().getTime()) + '&_mbox=' + urlencode(this.env.mailbox);

	if (refresh) {
	lock = this.set_busy(true, 'checkingmail');
	addurl += '&_refresh=1';
	// reset check-recent interval
	this.start_keepalive();
	}

	if (this.gui_objects.messagelist)
	addurl += '&_list=1';
	if (this.gui_objects.quotadisplay)
	addurl += '&_quota=1';
	if (this.env.search_request)
	addurl += '&_search=' + this.env.search_request;

	this.http_request('check-recent', addurl, lock);
	};


	/********************************************************/
	/******* helper methods *******/
	/********************************************************/

	// check if we're in show mode or if we have a unique selection
	// and return the message uid
	this.get_single_uid = function()
	{
	return this.env.uid ? this.env.uid : (this.message_list ? this.message_list.get_single_selection() : null);
	};

	// same as above but for contacts
	this.get_single_cid = function()
	{
	return this.env.cid ? this.env.cid : (this.contact_list ? this.contact_list.get_single_selection() : null);
	};

	// gets cursor position
	this.get_caret_pos = function(obj)
	{
	if (typeof(obj.selectionEnd)!='undefined')
	return obj.selectionEnd;
	else if (document.selection && document.selection.createRange) {
	var range = document.selection.createRange();
	if (range.parentElement()!=obj)
	return 0;

	var gm = range.duplicate();
	if (obj.tagName == 'TEXTAREA')
	gm.moveToElementText(obj);
	else
	gm.expand('textedit');

	gm.setEndPoint('EndToStart', range);
	var p = gm.text.length;

	return p<=obj.value.length ? p : -1;
	}
	else
	return obj.value.length;
	};

	// moves cursor to specified position
	this.set_caret_pos = function(obj, pos)
	{
	if (obj.setSelectionRange)
	obj.setSelectionRange(pos, pos);
	else if (obj.createTextRange) {
	var range = obj.createTextRange();
	range.collapse(true);
	range.moveEnd('character', pos);
	range.moveStart('character', pos);
	range.select();
	}
	};

	// disable/enable all fields of a form
	this.lock_form = function(form, lock)
	{
	if (!form \|\| !form.elements)
	return;

	var n, len, elm;

	if (lock)
	this.disabled_form_elements = [];

	for (n=0, len=form.elements.length; n<len; n++) {
	elm = form.elements[n];

	if (elm.type == 'hidden')
	continue;

	// remember which elem was disabled before lock
	if (lock && elm.disabled)
	this.disabled_form_elements.push(elm);
	else if (lock \|\| $.inArray(elm, this.disabled_form_elements)<0)
	elm.disabled = lock;
	}
	};

	} // end object rcube_webmail

	// 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;

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