app.js
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	/*
	+-----------------------------------------------------------------------+
	\| RoundCube Webmail Client Script \|
	\| \|
	\| This file is part of the RoundCube Webmail client \|
	\| Copyright (C) 2005-2008, RoundCube Dev, - Switzerland \|
	\| Licensed under the GNU GPL \|
	\| \|
	+-----------------------------------------------------------------------+
	\| Authors: Thomas Bruederli <roundcube@gmail.com> \|
	\| Charles McNulty <charles@charlesmcnulty.com> \|
	+-----------------------------------------------------------------------+
	\| Requires: common.js, list.js \|
	+-----------------------------------------------------------------------+

	$Id$
	*/


	var rcube_webmail_client;

	function rcube_webmail()
	{
	this.env = new Object();
	this.labels = new Object();
	this.buttons = new Object();
	this.gui_objects = new Object();
	this.commands = new Object();
	this.onloads = new Array();

	// create protected reference to myself
	rcube_webmail_client = this;
	this.ref = 'rcube_webmail_client';
	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.bin_path = './bin/';
	this.env.blankpage = 'program/blank.gif';


	// 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] = new Array();

	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][this.buttons[command].length] = button_prop;
	};

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

	// execute the given script on load
	this.add_onload = function(f)
	{
	this.onloads[this.onloads.length] = 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 objects
	for (var n in this.gui_objects)
	this.gui_objects[n] = rcube_find_object(this.gui_objects[n]);

	// tell parent window that this frame is loaded
	if (this.env.framed && parent.rcmail && parent.rcmail.set_busy)
	parent.rcmail.set_busy(false);

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

	switch (this.task)
	{
	case 'mail':
	if (this.gui_objects.messagelist)
	{
	this.message_list = new rcube_list_widget(this.gui_objects.messagelist, {multiselect:true, draggable:true, keyboard:true, 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('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_active = true; });
	this.message_list.addEventListener('dragend', function(o){ p.drag_active = false; });

	this.message_list.init();
	this.enable_command('toggle_status', true);

	if (this.gui_objects.mailcontframe)
	{
	this.gui_objects.mailcontframe.onmousedown = function(e){ return p.click_on_list(e); };
	document.onmouseup = function(e){ return p.doc_mouse_up(e); };
	}
	else
	this.message_list.focus();
	}

	if (this.env.coltypes)
	this.set_message_coltypes(this.env.coltypes);

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

	if (this.env.search_text != null && document.getElementById('quicksearchbox') != null)
	document.getElementById('quicksearchbox').value = this.env.search_text;

	if (this.env.action=='show' \|\| this.env.action=='preview')
	{
	this.enable_command('show', 'reply', 'reply-all', 'forward', 'moveto', 'delete', 'mark', 'viewsource', 'print', 'load-attachment', true);
	if (this.env.next_uid)
	{
	this.enable_command('nextmessage', true);
	this.enable_command('lastmessage', true);
	}
	if (this.env.prev_uid)
	{
	this.enable_command('previousmessage', true);
	this.enable_command('firstmessage', true);
	}
	}

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

	// 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);
	parent.rcmail.mark_message('read', this.env.uid);
	}

	if ((this.env.action=='show' \|\| this.env.action=='preview') && this.env.blockedobjects)
	{
	if (this.gui_objects.remoteobjectsmsg)
	this.gui_objects.remoteobjectsmsg.style.display = 'block';
	this.enable_command('load-images', true);
	}

	if (this.env.action=='compose')
	{
	this.enable_command('add-attachment', 'send-attachment', 'remove-attachment', 'send', true);
	if (this.env.spellcheck)
	{
	this.env.spellcheck.spelling_state_observer = function(s){ ref.set_spellcheck_state(s); };
	this.set_spellcheck_state('ready');
	}
	if (this.env.drafts_mailbox)
	this.enable_command('savedraft', true);
	}

	if (this.env.messagecount)
	this.enable_command('select-all', 'select-none', 'sort', 'expunge', true);

	if (this.env.messagecount && (this.env.mailbox==this.env.trash_mailbox \|\| this.env.mailbox==this.env.junk_mailbox))
	this.enable_command('purge', true);

	this.set_page_buttons();

	// focus main window
	if (this.env.framed && window.parent)
	window.parent.focus();
	else
	window.focus();

	// init message compose form
	if (this.env.action=='compose')
	this.init_messageform();

	// show printing dialog
	if (this.env.action=='print')
	window.print();

	// get unread count for each mailbox
	if (this.gui_objects.mailboxlist)
	{
	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.contactslist)
	{
	this.contact_list = new rcube_list_widget(this.gui_objects.contactslist, {multiselect:true, draggable:true, keyboard:true});
	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_active = true; });
	this.contact_list.addEventListener('dragend', function(o){ p.drag_active = false; });
	this.contact_list.init();

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

	if (this.gui_objects.contactslist.parentNode)
	{
	this.gui_objects.contactslist.parentNode.onmousedown = function(e){ return p.click_on_list(e); };
	document.onmouseup = function(e){ return p.doc_mouse_up(e); };
	}
	else
	this.contact_list.focus();
	}

	this.set_page_buttons();

	if (this.env.address_sources && !this.env.address_sources[this.env.source].readonly)
	this.enable_command('add', true);

	if (this.env.cid)
	this.enable_command('show', 'edit', true);

	if ((this.env.action=='add' \|\| this.env.action=='edit') && this.gui_objects.editform)
	this.enable_command('save', true);
	else
	this.enable_command('search', 'reset-search', 'moveto', true);

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


	case 'settings':
	this.enable_command('preferences', 'identities', 'save', 'folders', true);

	if (this.env.action=='identities' \|\| this.env.action=='edit-identity' \|\| this.env.action=='add-identity')
	this.enable_command('edit', 'add', 'delete', true);

	if (this.env.action=='edit-identity' \|\| this.env.action=='add-identity')
	this.enable_command('save', true);

	if (this.env.action=='folders')
	this.enable_command('subscribe', 'unsubscribe', 'create-folder', 'rename-folder', 'delete-folder', 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);
	}

	if (this.gui_objects.subscriptionlist)
	this.init_subscription_list();

	break;

	case 'login':
	var input_user = rcube_find_object('rcmloginuser');
	var input_pass = rcube_find_object('rcmloginpwd');
	if (input_user)
	input_user.onkeypress = function(e){ return rcmail.login_user_keypress(e); };
	if (input_user && input_user.value=='')
	input_user.focus();
	else if (input_pass)
	input_pass.focus();

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

	default:
	break;
	}


	// enable basic commands
	this.enable_command('logout', true);

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

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

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


	// execute all foreign onload scripts
	for (var i=0; i<this.onloads.length; i++)
	{
	if (typeof(this.onloads[i]) == 'string')
	eval(this.onloads[i]);
	else if (typeof(this.onloads[i]) == 'function')
	this.onloads[i]();
	}
	};


	// start interval for keep-alive/recent_check signal
	this.start_keepalive = function()
	{
	if (this.env.keep_alive && !this.env.framed && this.task=='mail' && this.gui_objects.messagelist)
	this._int = setInterval(function(){ ref.check_for_recent(); }, this.env.keep_alive * 1000);
	else if (this.env.keep_alive && !this.env.framed && this.task!='login')
	this._int = setInterval(function(){ ref.send_keep_alive(); }, this.env.keep_alive * 1000);
	}


	this.init_message_row = function(row)
	{
	var uid = row.uid;
	if (uid && this.env.messages[uid])
	{
	row.deleted = this.env.messages[uid].deleted ? true : false;
	row.unread = this.env.messages[uid].unread ? true : false;
	row.replied = this.env.messages[uid].replied ? true : false;
	}

	// set eventhandler to message icon
	if ((row.icon = row.obj.cells[0].childNodes[0]) && row.icon.nodeName=='IMG')
	{
	var p = this;
	row.icon.id = 'msgicn_'+row.uid;
	row.icon._row = row.obj;
	row.icon.onmousedown = function(e) { p.command('toggle_status', this); };
	}
	};


	// 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 = rcube_find_object('_from');
	var input_to = rcube_find_object('_to');
	var input_cc = rcube_find_object('_cc');
	var input_bcc = rcube_find_object('_bcc');
	var input_replyto = rcube_find_object('_replyto');
	var input_subject = rcube_find_object('_subject');
	var input_message = rcube_find_object('_message');

	// init live search events
	if (input_to)
	this.init_address_input_events(input_to);
	if (input_cc)
	this.init_address_input_events(input_cc);
	if (input_bcc)
	this.init_address_input_events(input_bcc);

	// add signature according to selected identity
	if (input_from && input_from.type=='select-one')
	this.change_identity(input_from);

	if (input_to && input_to.value=='')
	input_to.focus();
	else if (input_subject && input_subject.value=='')
	input_subject.focus();
	else if (input_message)
	this.set_caret2start(input_message);

	// 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)
	{
	var handler = function(e){ return ref.ksearch_keypress(e,this); };
	var handler2 = function(e){ return ref.ksearch_blur(e,this); };

	if (obj.addEventListener)
	{
	obj.addEventListener(bw.safari ? 'keydown' : 'keypress', handler, false);
	obj.addEventListener('blur', handler2, false);
	}
	else
	{
	obj.onkeydown = handler;
	obj.onblur = handler2;
	}

	obj.setAttribute('autocomplete', 'off');
	};



	/*********************************************************/
	/******* 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' && (command=='list' \|\| command=='mail' \|\| command=='addressbook' \|\| command=='settings'))
	{
	if (this.cmp_hash != this.compose_field_hash() && !confirm(this.get_label('notsentwarning')))
	return false;
	}


	// process command
	switch (command)
	{
	case 'login':
	if (this.gui_objects.loginform)
	this.gui_objects.loginform.submit();
	break;

	case 'logout':
	this.goto_url('logout', true);
	break;

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


	// misc list commands
	case 'list':
	if (this.task=='mail')
	{
	if (this.env.search_request<0 \|\| (props != '' && (this.env.search_request && 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<0 \|\| (this.env.search_request && props != this.env.source))
	this.reset_qsearch();

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


	case 'sort':
	// get the type of sorting
	var a_sort = props.split('_');
	var sort_col = a_sort[0];
	var sort_order = a_sort[1] ? a_sort[1].toUpperCase() : null;
	var header;

	// no sort order specified: toggle
	if (sort_order==null)
	{
	if (this.env.sort_col==sort_col)
	sort_order = this.env.sort_order=='ASC' ? 'DESC' : 'ASC';
	else
	sort_order = this.env.sort_order;
	}

	if (this.env.sort_col==sort_col && this.env.sort_order==sort_order)
	break;

	// set table header class
	if (header = document.getElementById('rcmHead'+this.env.sort_col))
	this.set_classname(header, 'sorted'+(this.env.sort_order.toUpperCase()), false);
	if (header = document.getElementById('rcmHead'+sort_col))
	this.set_classname(header, 'sorted'+sort_order, true);

	// save new sort properties
	this.env.sort_col = sort_col;
	this.env.sort_order = 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');
	break;

	case 'save-identity':
	case 'save':
	if (this.gui_objects.editform)
	{
	var input_pagesize = rcube_find_object('_pagesize');
	var input_name = rcube_find_object('_name');
	var input_email = rcube_find_object('_email');

	// user prefs
	if (input_pagesize && isNaN(input_pagesize.value))
	{
	alert(this.get_label('nopagesizewarning'));
	input_pagesize.focus();
	break;
	}
	// contacts/identities
	else
	{
	if (input_name && input_name.value == '')
	{
	alert(this.get_label('nonamewarning'));
	input_name.focus();
	break;
	}
	else if (input_email && !rcube_check_email(input_email.value))
	{
	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 'mark':
	if (props)
	this.mark_message(props);
	break;

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

	var uid;
	var 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 '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 && find_in_array(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)
	{
	setTimeout(function(){ ref.attachment_win.focus(); }, 10);
	break;
	}
	}

	this.goto_url('get', qstring+'&_download=1', false);
	break;

	case 'select-all':
	this.message_list.select_all(props);
	break;

	case 'select-none':
	this.message_list.clear_selection();
	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();
	break;

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

	if (this.task=='mail' && this.env.mailbox==this.env.drafts_mailbox)
	{
	var uid;
	if (uid = this.get_single_uid())
	url += '&_draft_uid='+uid+'&_mbox='+urlencode(this.env.mailbox);
	}
	// 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 = new Array();
	if (props)
	a_cids[a_cids.length] = 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[a_cids.length] = selection[n];
	}

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

	break;
	}
	else if (props)
	url += '&_to='+urlencode(props);

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

	this.redirect(url);
	break;

	case 'spellcheck':
	if (this.env.spellcheck && this.env.spellcheck.spellCheck && this.spellcheck_ready)
	{
	this.env.spellcheck.spellCheck(this.env.spellcheck.check_link);
	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;

	this.set_busy(true, 'savingmessage');
	var form = this.gui_objects.messageform;
	form.target = "savetarget";
	form._draft.value = '1';
	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
	this.set_busy(true, 'sendingmessage');
	var form = this.gui_objects.messageform;
	form.target = "savetarget";
	form._draft.value = '';
	form.submit();

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

	case 'add-attachment':
	this.show_attachment_form(true);

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

	this.upload_file(props)
	break;

	case 'remove-attachment':
	this.remove_attachment(props);
	break;

	case 'reply-all':
	case 'reply':
	var uid;
	if (uid = this.get_single_uid())
	this.goto_url('compose', '_reply_uid='+uid+'&_mbox='+urlencode(this.env.mailbox)+(command=='reply-all' ? '&_all=1' : ''), 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)
	{
	setTimeout(function(){ ref.printwin.focus(); }, 20);
	if (this.env.action != 'show')
	this.toggle_read_status('read', [uid]);
	}
	}
	break;

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

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


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

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

	case 'delete-identity':
	this.delete_identity();

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

	case 'subscribe':
	this.subscribe_folder(props);
	break;

	case 'unsubscribe':
	this.unsubscribe_folder(props);
	break;

	case 'create-folder':
	this.create_folder(props);
	break;

	case 'rename-folder':
	this.rename_folder(props);
	break;

	case 'delete-folder':
	this.delete_folder(props);
	break;

	}

	return obj ? false : true;
	};


	// set command enabled or disabled
	this.enable_command = function()
	{
	var args = arguments;
	if(!args.length) return -1;

	var command;
	var enable = args[args.length-1];

	for(var n=0; n<args.length-1; n++)
	{
	command = args[n];
	this.commands[command] = enable;
	this.set_button(command, (enable ? 'act' : 'pas'));
	}
	return true;
	};


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

	this.display_message(msg, 'loading', true);
	}
	else if (!a)
	this.hide_message();

	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 = setTimeout(function(){ ref.request_timed_out(); }, this.env.request_timeout * 1000);
	};


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


	// 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');
	};


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


	this.doc_mouse_up = function(e)
	{
	if (this.message_list)
	this.message_list.blur();
	else if (this.contact_list)
	this.contact_list.blur();
	};

	this.focus_folder = function(id)
	{
	var li;
	if (this.drag_active && this.check_droptarget(id) && (li = this.get_folder_li(id)))
	this.set_classname(li, 'droptarget', true);
	}

	this.unfocus_folder = function(id)
	{
	var li;
	if (this.drag_active && (li = this.get_folder_li(id)))
	this.set_classname(li, 'droptarget', false);
	}

	// onmouseup handler for folder list item
	this.folder_mouse_up = function(id)
	{
	if (this.drag_active)
	{
	this.unfocus_folder(id);
	this.command('moveto', id);
	}
	};

	this.click_on_list = function(e)
	{
	if (this.message_list)
	this.message_list.focus();
	else if (this.contact_list)
	this.contact_list.focus();

	var mbox_li;
	if (mbox_li = this.get_folder_li())
	this.set_classname(mbox_li, 'unfocused', true);

	rcube_event.cancel(e);
	};


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

	var selected = list.selection.length==1;

	// Hide certain command buttons when Drafts folder is selected
	if (this.env.mailbox == this.env.drafts_mailbox)
	{
	this.enable_command('reply', 'reply-all', 'forward', false);
	this.enable_command('show', selected);
	this.enable_command('delete', 'moveto', 'mark', (list.selection.length > 0 ? true : false));
	}
	else
	{
	this.enable_command('show', 'reply', 'reply-all', 'forward', 'print', selected);
	this.enable_command('delete', 'moveto', 'mark', (list.selection.length > 0 ? true : false));
	}

	// start timer for message preview (wait for double click)
	if (selected && this.env.contentframe)
	this.preview_timer = setTimeout(function(){ ref.msglist_get_preview(); }, this.dblclick_time + 10);
	else if (this.env.contentframe)
	this.show_contentframe(false);
	};


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

	var uid = list.get_single_selection();
	if (uid && this.env.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
	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.check_droptarget = function(id)
	{
	if (this.task == 'mail')
	return (id != this.env.mailbox);
	else if (this.task == 'addressbook')
	return (id != this.env.source && this.env.address_sources[id] && !this.env.address_sources[id].readonly);
	else if (this.task == 'settings')
	return (id != this.env.folder);
	};


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


	// when user doble-clicks on a row
	this.show_message = function(id, safe, preview)
	{
	var add_url = '';
	var action = preview ? 'preview': 'show';
	var target = window;
	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;

	if (id)
	{
	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
	{
	this.set_busy(true, 'loading');
	target.location.href = this.env.comm_path+url;
	}
	}
	};


	this.show_contentframe = function(show)
	{
	var frm;
	if (this.env.contentframe && (frm = rcube_find_object(this.env.contentframe)))
	{
	if (!show && window.frames[this.env.contentframe] && frames[this.env.contentframe].location.href.indexOf(this.env.blankpage)<0)
	frames[this.env.contentframe].location.href = this.env.blankpage;
	if (!bw.safari)
	frm.style.display = show ? 'block' : 'none';
	}

	if (!show && this.busy)
	this.set_busy(false);
	};


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


	// list messages of a specific mailbox
	this.list_mailbox = function(mbox, page, sort)
	{
	this.last_selected = 0;
	var add_url = '';
	var target = window;

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

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

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

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

	if (mbox != this.env.mailbox \|\| (mbox == this.env.mailbox && !page && !sort))
	add_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, add_url);
	return;
	}

	if (this.env.contentframe && window.frames && window.frames[this.env.contentframe])
	{
	target = window.frames[this.env.contentframe];
	add_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 : '')+add_url;
	}
	};


	// 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 : '');
	this.set_busy(true, 'loading');
	this.http_request('list', url+add_url, true);
	};


	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 = true;
	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 = true;
	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;
	};


	// move selected messages to the specified mailbox
	this.move_messages = function(mbox)
	{
	// 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 = true;
	this.set_busy(true, 'movingmessage');
	}
	else
	this.show_contentframe(false);

	// Hide message command buttons until a message is selected
	this.enable_command('reply', 'reply-all', 'forward', 'delete', 'mark', 'print', 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 ? this.message_list.get_selection() : new Array();

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

	// if there is a trash mailbox defined and we're not currently in it:
	if (this.env.trash_mailbox && String(this.env.mailbox).toLowerCase() != String(this.env.trash_mailbox).toLowerCase())
	{
	// 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);
	}
	// if there is a trash mailbox defined but we are in it:
	else if (this.env.trash_mailbox && String(this.env.mailbox).toLowerCase() == String(this.env.trash_mailbox).toLowerCase())
	this.permanently_remove_messages();
	// if there isn't a defined trash mailbox and the config is set to flag for deletion
	else if (!this.env.trash_mailbox && this.env.flag_for_deletion)
	{
	this.mark_message('delete');
	if(this.env.action=="show")
	this.command('nextmessage','',this);
	else if (selection.length == 1)
	this.message_list.select_next();
	}
	// if there isn't a defined trash mailbox and the config is set NOT to flag for deletion
	else if (!this.env.trash_mailbox)
	this.permanently_remove_messages();
	};


	// 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 request with UIDs of all selected messages
	// @private
	this._with_selected_messages = function(action, lock, add_url)
	{
	var a_uids = new Array();
	if (this.env.uid)
	a_uids[a_uids.length] = this.env.uid;
	else
	{
	var selection = this.message_list.get_selection();
	var id;
	for (var n=0; n<selection.length; n++)
	{
	id = selection[n];
	a_uids[a_uids.length] = id;
	this.message_list.remove_row(id, (n == selection.length-1));
	}
	}

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

	// send request to server
	this.http_post(action, '_uid='+a_uids.join(',')+'&_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 = new Array();
	var selection = this.message_list ? this.message_list.get_selection() : new Array();

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

	// nothing to do
	if (!a_uids.length)
	return;

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

	// set class to read/unread
	this.toggle_read_status = function(flag, a_uids)
	{
	// mark all message rows as read/unread
	var icn_src;
	var res_uids = new Array();
	var rows = this.message_list.rows;
	for (var i=0; i<a_uids.length; i++)
	{
	uid = a_uids[i];
	// check if flag isn't set yet
	if (rows[uid] && ((flag=='unread' && !rows[uid].unread) \|\| (flag=='read' && rows[uid].unread)))
	{
	res_uids[res_uids.length] = uid;

	rows[uid].unread = (flag=='unread' ? true : false);

	if (rows[uid].classname.indexOf('unread')<0 && rows[uid].unread)
	{
	rows[uid].classname += ' unread';
	this.set_classname(rows[uid].obj, 'unread', true);

	if (this.env.unreadicon)
	icn_src = this.env.unreadicon;
	}
	else if (!rows[uid].unread)
	{
	rows[uid].classname = rows[uid].classname.replace(/\s*unread/, '');
	this.set_classname(rows[uid].obj, 'unread', false);

	if (rows[uid].replied && this.env.repliedicon)
	icn_src = this.env.repliedicon;
	else if (this.env.messageicon)
	icn_src = this.env.messageicon;
	}

	if (rows[uid].icon && icn_src)
	rows[uid].icon.src = icn_src;
	}
	}

	if (res_uids.length)
	this.http_post('mark', '_uid='+res_uids.join(',')+'&_flag='+flag);
	};

	// mark all message rows as deleted/undeleted
	this.toggle_delete_status = function(a_uids)
	{
	if (this.env.read_when_deleted)
	this.toggle_read_status('read',a_uids);

	// if deleting message from "view message" don't bother with delete icon
	if (this.env.action == "show")
	return false;

	var rows = this.message_list.rows;
	if (a_uids.length==1)
	{
	if (rows[a_uids[0]] && rows[a_uids[0]].classname.indexOf('deleted') < 0)
	this.flag_as_deleted(a_uids);
	else
	this.flag_as_undeleted(a_uids);

	return true;
	}

	var all_deleted = true;
	for (var i=0; i<a_uids.length; i++)
	{
	uid = a_uids[i];
	if (rows[uid]) {
	if (rows[uid].classname.indexOf('deleted')<0)
	{
	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)
	{
	// if deleting message from "view message" don't bother with delete icon
	if (this.env.action == "show")
	return false;

	var icn_src;
	var rows = this.message_list.rows;

	for (var i=0; i<a_uids.length; i++)
	{
	uid = a_uids[i];
	if (rows[uid]) {
	rows[uid].deleted = false;

	if (rows[uid].classname.indexOf('deleted') > 0)
	{
	rows[uid].classname = rows[uid].classname.replace(/\s*deleted/, '');
	this.set_classname(rows[uid].obj, 'deleted', false);
	}
	if (rows[uid].unread && this.env.unreadicon)
	icn_src = this.env.unreadicon;
	else if (rows[uid].replied && this.env.repliedicon)
	icn_src = this.env.repliedicon;
	else if (this.env.messageicon)
	icn_src = this.env.messageicon;
	if (rows[uid].icon && icn_src)
	rows[uid].icon.src = icn_src;
	}
	}

	this.http_post('mark', '_uid='+a_uids.join(',')+'&_flag=undelete');
	return true;
	};


	this.flag_as_deleted = function(a_uids)
	{
	// if deleting message from "view message" don't bother with delete icon
	if (this.env.action == "show")
	return false;

	var rows = this.message_list.rows;
	for (var i=0; i<a_uids.length; i++)
	{
	uid = a_uids[i];
	if (rows[uid]) {
	rows[uid].deleted = true;

	if (rows[uid].classname.indexOf('deleted')<0) {
	rows[uid].classname += ' deleted';
	this.set_classname(rows[uid].obj, 'deleted', true);
	}
	if (rows[uid].icon && this.env.deletedicon)
	rows[uid].icon.src = this.env.deletedicon;
	}
	}

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


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

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

	// enter
	if ((key==13) && (elm = rcube_find_object('_pass')))
	{
	elm.focus();
	return false;
	}
	};


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


	// checks the input fields before sending a message
	this.check_compose_input = function()
	{
	// check input fields
	var input_to = rcube_find_object('_to');
	var input_cc = rcube_find_object('_cc');
	var input_bcc = rcube_find_object('_bcc');
	var input_subject = rcube_find_object('_subject');
	var input_message = rcube_find_object('_message');

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

	// display localized warning for missing subject
	if (input_subject && input_subject.value == '')
	{
	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.value = subject ? subject : this.get_label('nosubject');
	}
	}

	// check for empty body
	if ((input_message.value == '' && (!window.tinyMCE \|\| tinyMCE.getContent() == '')) && !confirm(this.get_label('nobodywarning')))
	{
	input_message.focus();
	return false;
	}

	return true;
	};


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


	this.set_draft_id = function(id)
	{
	var f;
	if (f = rcube_find_object('_draft_saveid'))
	f.value = 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 input_to = rcube_find_object('_to');
	var input_cc = rcube_find_object('_to');
	var input_bcc = rcube_find_object('_to');
	var input_subject = rcube_find_object('_subject');
	var input_message = rcube_find_object('_message');

	var str = '';
	if (input_to && input_to.value)
	str += input_to.value+':';
	if (input_cc && input_cc.value)
	str += input_cc.value+':';
	if (input_bcc && input_bcc.value)
	str += input_bcc.value+':';
	if (input_subject && input_subject.value)
	str += input_subject.value+':';
	if (input_message && input_message.value)
	str += input_message.value;

	if (save)
	this.cmp_hash = str;

	return str;
	};


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

	var id = obj.options[obj.selectedIndex].value;
	var input_message = rcube_find_object('_message');
	var message = input_message ? input_message.value : '';
	var is_html = (rcube_find_object('_is_html').value == '1');
	var sig, p;

	if (!this.env.identity)
	this.env.identity = id

	if (!is_html)
	{
	// remove the 'old' signature
	if (this.env.identity && this.env.signatures && this.env.signatures[this.env.identity])
	{
	sig = this.env.signatures[this.env.identity]['text'];
	if (sig.indexOf('-- ')!=0)
	sig = '-- \n'+sig;

	p = message.lastIndexOf(sig);
	if (p>=0)
	message = message.substring(0, p-1) + message.substring(p+sig.length, message.length);
	}

	// add the new signature string
	if (this.env.signatures && this.env.signatures[id])
	{
	sig = this.env.signatures[id]['text'];
	if (this.env.signatures[id]['is_html'])
	{
	sig = this.env.signatures[id]['plain_text'];
	}
	if (sig.indexOf('-- ')!=0)
	sig = '-- \n'+sig;
	message += '\n'+sig;
	}
	}
	else
	{
	var eid = tinyMCE.getEditorId('_message');
	// editor is a TinyMCE_Control object
	var editor = tinyMCE.getInstanceById(eid);
	// if this is null, we should exit
	if (editor == null) {
	return false;
	}
	var msgDoc = editor.getDoc();
	var msgBody = msgDoc.body;

	if (this.env.signatures && this.env.signatures[id])
	{
	// Append the signature as a span within the body
	var sigElem = msgDoc.getElementById("_rc_sig");
	if (!sigElem)
	{
	sigElem = msgDoc.createElement("span");
	sigElem.setAttribute("id", "_rc_sig");
	msgBody.appendChild(sigElem);
	}
	if (this.env.signatures[id]['is_html'])
	{
	sigElem.innerHTML = this.env.signatures[id]['text'];
	}
	else
	{
	sigElem.innerHTML = '<pre>' + this.env.signatures[id]['text'] + '</pre>';
	}
	}
	}

	if (input_message)
	input_message.value = message;

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


	this.show_attachment_form = function(a)
	{
	if (!this.gui_objects.uploadbox)
	return false;

	var elm, list;
	if (elm = this.gui_objects.uploadbox)
	{
	if (a && (list = this.gui_objects.attachmentlist))
	{
	var pos = rcube_get_object_pos(list);
	var left = pos.x;
	var top = pos.y + list.offsetHeight + 10;

	elm.style.top = top+'px';
	elm.style.left = left+'px';
	}

	elm.style.visibility = a ? 'visible' : 'hidden';
	}

	// clear upload form
	try {
	if (!a && this.gui_objects.attachmentform != this.gui_objects.messageform)
	this.gui_objects.attachmentform.reset();
	}
	catch(e){} // ignore errors

	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 && !window.opera)
	{
	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.width = 10;
	frame.height = 10;
	frame.style.visibility = 'hidden';
	document.body.appendChild(frame);
	}

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

	// 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, content)
	{
	if (!this.gui_objects.attachmentlist)
	return false;

	var li = document.createElement('LI');
	li.id = name;
	li.innerHTML = content;
	this.gui_objects.attachmentlist.appendChild(li);
	return true;
	};

	this.remove_from_attachment_list = function(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.http_post('remove-attachment', '_file='+urlencode(name));

	return true;
	};

	// 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 != '')
	{
	if (this.message_list)
	this.message_list.clear();
	else if (this.contact_list) {
	this.contact_list.clear(true);
	this.show_contentframe(false);
	}

	// reset vars
	this.env.current_page = 1;
	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) : ''), true);
	}
	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(msg)
	{
	this.list_mailbox();
	this.display_message(msg, 'confirmation', true);
	}


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


	// handler for keyboard events on address-fields
	this.ksearch_keypress = function(e, obj)
	{
	if (typeof(this.env.contacts)!='object' \|\| !this.env.contacts.length)
	return true;

	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;
	var next;

	highlight = document.getElementById('rcmksearchSelected');
	if (!highlight)
	highlight = this.ksearch_pane.ul.firstChild;

	if (highlight && (next = dir ? highlight.previousSibling : highlight.nextSibling))
	{
	highlight.removeAttribute('id');
	this.set_classname(highlight, 'selected', false);
	}

	if (next)
	{
	next.setAttribute('id', 'rcmksearchSelected');
	this.set_classname(next, 'selected', true);
	this.ksearch_selected = next._rcm_id;
	}

	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;

	}

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

	return true;
	};


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

	// get cursor pos
	var inp_value = this.ksearch_input.value.toLowerCase();
	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 = 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);

	};


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

	// 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, '').toLowerCase();

	if (!q.length \|\| q==this.ksearch_value)
	{
	if (!q.length && this.ksearch_pane && this.ksearch_pane.visible)
	this.ksearch_pane.show(0);

	return;
	}

	this.ksearch_value = q;

	// start searching the contact list
	var a_results = new Array();
	var a_result_ids = new Array();
	var c=0;
	for (var i=0; i<this.env.contacts.length; i++)
	{
	if (this.env.contacts[i].toLowerCase().indexOf(q)>=0)
	{
	a_results[c] = this.env.contacts[i];
	a_result_ids[c++] = i;

	if (c==15) // limit search results
	break;
	}
	}

	// display search results
	if (c && a_results.length)
	{
	var p, ul, li;

	// create results pane if not present
	if (!this.ksearch_pane)
	{
	ul = document.createElement('UL');
	this.ksearch_pane = new rcube_layer('rcmKSearchpane', {vis:0, zindex:30000});
	this.ksearch_pane.elm.appendChild(ul);
	this.ksearch_pane.ul = ul;
	}
	else
	ul = this.ksearch_pane.ul;

	// remove all search results
	ul.innerHTML = '';

	// add each result line to list
	for (i=0; i<a_results.length; i++)
	{
	li = document.createElement('LI');
	li.innerHTML = a_results[i].replace(/</, '<').replace(/>/, '>');
	li.onmousedown = function(e){ ref.insert_recipient(this._rcm_id); ref.ksearch_pane.show(0); return rcube_event.cancel(e); };
	li.style.cursor = 'pointer';
	li._rcm_id = a_result_ids[i];
	ul.appendChild(li);
	}

	// check if last selected item is still in result list
	if (this.ksearch_selected!==null)
	{
	p = find_in_array(this.ksearch_selected, a_result_ids);
	if (p>=0 && ul.childNodes)
	{
	ul.childNodes[p].setAttribute('id', 'rcmksearchSelected');
	this.set_classname(ul.childNodes[p], 'selected', true);
	}
	else
	this.ksearch_selected = null;
	}

	// if no item selected, select the first one
	if (this.ksearch_selected===null)
	{
	ul.firstChild.setAttribute('id', 'rcmksearchSelected');
	this.set_classname(ul.firstChild, 'selected', true);
	this.ksearch_selected = a_result_ids[0];
	}

	// move the results pane right under the input box and make it visible
	var pos = rcube_get_object_pos(this.ksearch_input);
	this.ksearch_pane.move(pos.x, pos.y+this.ksearch_input.offsetHeight);
	this.ksearch_pane.show(1);
	}
	// hide results pane
	else
	this.ksearch_hide();
	};


	this.ksearch_blur = function(e, obj)
	{
	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.show(0);
	};



	/*********************************************************/
	/******* 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 = setTimeout(function(){ ref.load_contact(id, 'show'); }, this.dblclick_time + 10);
	else if (this.env.contentframe)
	this.show_contentframe(false);

	this.enable_command('edit', id?true:false);
	this.enable_command('compose', list.selection.length > 0);
	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, page)
	{
	var add_url = '';
	var target = window;

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

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

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

	this.select_folder(src, this.env.source);
	this.env.source = src;

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

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

	// 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) : '')+(page ? '&_page='+page : '')+add_url;
	};


	// send remote request to load contacts list
	this.list_contacts_remote = function(src, 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 : '');
	this.env.source = src;

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

	this.set_busy(true, 'loading');
	this.http_request('list', url, true);
	};


	// load contact record
	this.load_contact = function(cid, action, framed)
	{
	var add_url = '';
	var 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)
	{
	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 != this.env.source && cid && this.env.address_sources[to] && !this.env.address_sources[to].readonly)
	this.http_post('copy', '_cid='+urlencode(cid)+'&_source='+urlencode(this.env.source)+'&_to='+urlencode(to));
	};


	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 a_cids = new Array();
	var qs = '';

	if (this.env.cid)
	a_cids[a_cids.length] = this.env.cid;
	else
	{
	var id;
	for (var n=0; n<selection.length; n++)
	{
	id = selection[n];
	a_cids[a_cids.length] = 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(','))+'&_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)
	{
	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].innerHTML = cols_arr[c];

	return true;
	}

	return false;
	};


	/*********************************************************/
	/******* 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.rename_folder(row.id); return false; };
	if (anchors[1])
	anchors[1].onclick = function() { p.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();
	}

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

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

	var add_url = '';
	var 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];

	// if (this.env.framed && id)
	this.goto_url('delete-identity', '_iid='+id, true);
	return true;
	};


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

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


	this.unfocus_subscription = function(id)
	{
	var row;
	this.set_env('dstfolder', null);
	if (this.env.subscriptionrows[id] &&
	(row = document.getElementById(id)))
	this.set_classname(row, 'droptarget', false);
	else
	this.set_classname(this.subscription_list.frame, 'droptarget', false);
	}


	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]) &&
	(find_in_array(this.env.defaultfolders, folder)!=0))
	this.set_env('folder', folder);
	else
	this.set_env('folder', null);

	if (this.gui_objects.createfolderhint)
	this.gui_objects.createfolderhint.innerHTML = 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;
	this.http_post('rename-folder', '_folder_oldname='+urlencode(this.env.folder)+'&_folder_newname='+urlencode(newname));
	}
	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 (this.env.folder && name != '')
	name = this.env.folder+this.env.delimiter+name;

	if (name)
	this.http_post('create-folder', '_name='+urlencode(name), true);
	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.value = this.env.subscriptionrows[id][1].replace(reg, '');
	this.name_input.style.width = '100%';

	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.onkeypress = function(e){ rcmail.name_input_keypress(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])
	{
	var reg = new RegExp('[^'+RegExp.escape(this.env.delimiter)+']*['+RegExp.escape(this.env.delimiter)+']', 'g');
	cell.innerHTML = this.env.subscriptionrows[this.edit_folder][1].replace(reg, '    ');
	}

	this.edit_folder = null;
	};


	// handler for keyboard events on the input field
	this.name_input_keypress = 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 (this.name_input.__parent)
	newname = this.name_input.__parent + this.env.delimiter + newname;
	this.http_post('rename-folder', '_folder_oldname='+urlencode(this.env.subscriptionrows[this.edit_folder][0])+'&_folder_newname='+urlencode(newname));
	}
	}
	// 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')))
	{
	this.http_post('delete-folder', '_mboxes='+urlencode(folder));
	this.set_env('folder', null);

	if (this.gui_objects.createfolderhint)
	this.gui_objects.createfolderhint.innerHTML = '';

	}
	};


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

	for (var refid in this.env.subscriptionrows)
	if (this.env.subscriptionrows[refid]!=null)
	break;

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

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

	if (!id \|\| !(refrow = document.getElementById(refid)))
	{
	// Refresh page if we don't have a table row to clone
	this.goto_url('folders');
	}
	else
	{
	// clone a table row if there are existing rows
	var row = this.clone_table_row(refrow);
	row.id = id;
	if (replace)
	tbody.replaceChild(row, replace);
	else
	tbody.appendChild(row);
	}

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

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

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

	if (!replace && row.cells[2] && row.cells[2].firstChild.tagName=='INPUT')
	{
	row.cells[2].firstChild.value = name;
	row.cells[2].firstChild.checked = true;
	}

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

	this.sort_subscription_list();
	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)
	{
	var id = this.get_folder_row_id(oldfolder);
	var row = document.getElementById(id);

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

	// rename folder in rename-folder dropdown
	var form, elm;
	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 row;
	var id = this.get_folder_row_id(folder);
	if (id && (row = document.getElementById(id)))
	row.style.display = 'none';

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

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


	this.subscribe_folder = function(folder)
	{
	var form;
	if ((form = this.gui_objects.editform) && form.elements['_unsubscribed'])
	this.change_subscription('_unsubscribed', '_subscribed', 'subscribe');
	else if (folder)
	this.http_post('subscribe', '_mboxes='+urlencode(folder));
	};


	this.unsubscribe_folder = function(folder)
	{
	var form;
	if ((form = this.gui_objects.editform) && form.elements['_subscribed'])
	this.change_subscription('_subscribed', '_unsubscribed', 'unsubscribe');
	else if (folder)
	this.http_post('unsubscribe', '_mboxes='+urlencode(folder));
	};


	this.change_subscription = function(from, to, action)
	{
	var form;
	if (form = this.gui_objects.editform)
	{
	var a_folders = new Array();
	var list_from = form.elements[from];

	for (var i=0; list_from && i<list_from.options.length; i++)
	{
	if (list_from.options[i] && list_from.options[i].selected)
	{
	a_folders[a_folders.length] = list_from.options[i].value;
	list_from[i] = null;
	i--;
	}
	}

	// yes, we have some folders selected
	if (a_folders.length)
	{
	var list_to = form.elements[to];
	var index;

	for (var n=0; n<a_folders.length; n++)
	{
	index = list_to.options.length;
	list_to[index] = new Option(a_folders[n]);
	}

	this.http_post(action, '_mboxes='+urlencode(a_folders.join(',')));
	}
	}

	};

	// 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;
	var new_row = document.createElement('TR');
	for(var n=0; n<row.childNodes.length; n++)
	{
	cell = row.childNodes[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;
	};

	// sort subscription folder list
	this.sort_subscription_list = function()
	{
	var index = new Array();
	var tbody = this.gui_objects.subscriptionlist.tBodies[0];
	var swapped = false;
	for (var i = 0; i<tbody.childNodes.length; i++)
	if (this.env.subscriptionrows[tbody.childNodes[i].id]!=null)
	index.push(i);
	for (i = 0; i<(index.length-1); i++)
	{
	var one = tbody.childNodes[index[i]];
	var two = tbody.childNodes[index[i+1]];
	if (this.env.subscriptionrows[one.id][0].toLowerCase()>
	this.env.subscriptionrows[two.id][0].toLowerCase())
	{
	var swap = one.cloneNode(true);
	tbody.replaceChild(swap, two);
	tbody.replaceChild(two, one);
	swapped = true;
	}
	}
	if (swapped)
	this.sort_subscription_list();
	};


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


	// eable/disable buttons for page shifting
	this.set_page_buttons = function()
	{
	this.enable_command('nextpage', (this.env.pagecount > this.env.current_page));
	this.enable_command('lastpage', (this.env.pagecount > this.env.current_page));
	this.enable_command('previouspage', (this.env.current_page > 1));
	this.enable_command('firstpage', (this.env.current_page > 1));
	}


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

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

	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 == '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 a_buttons = this.buttons[command];
	var button, img;

	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')
	{
	img = document.getElementById(button.id);
	if (img && button.over)
	img.src = button.over;
	}
	}
	};

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

	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')
	{
	img = document.getElementById(button.id);
	if (img && button.sel)
	img.src = button.sel;
	}
	}
	};

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

	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')
	{
	img = document.getElementById(button.id);
	if (img && button.act)
	img.src = button.act;
	}
	}
	};


	// set/unset a specific class name
	this.set_classname = function(obj, classname, set)
	{
	var reg = new RegExp('\s*'+classname, 'i');
	if (!set && obj.className.match(reg))
	obj.className = obj.className.replace(reg, '');
	else if (set && !obj.className.match(reg))
	obj.className += ' '+classname;
	};


	// write to the document/window title
	this.set_pagetitle = function(title)
	{
	if (title && document.title)
	document.title = title;
	}


	// display a system message
	this.display_message = function(msg, type, hold)
	{
	if (!this.loaded) // save message in order to display after page loaded
	{
	this.pending_message = new Array(msg, type);
	return true;
	}

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

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

	if (this.message_timer)
	clearTimeout(this.message_timer);

	var cont = msg;
	if (type)
	cont = '<div class="'+type+'">'+cont+'</div>';

	var _rcube = this;
	this.gui_objects.message.innerHTML = cont;
	this.gui_objects.message.style.display = 'block';

	if (type!='loading')
	this.gui_objects.message.onmousedown = function(){ _rcube.hide_message(); return true; };

	if (!hold)
	this.message_timer = setTimeout(function(){ ref.hide_message(); }, this.message_time);
	};


	// make a message row disapear
	this.hide_message = function()
	{
	if (this.gui_objects.message)
	{
	this.gui_objects.message.style.display = 'none';
	this.gui_objects.message.onmousedown = null;
	}
	};


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

	if ((current_li = this.get_folder_li(old)))
	{
	this.set_classname(current_li, 'selected', false);
	this.set_classname(current_li, 'unfocused', false);
	}

	if ((target_li = this.get_folder_li(name)))
	{
	this.set_classname(target_li, 'unfocused', false);
	this.set_classname(target_li, 'selected', true);
	}
	}
	};

	// helper method to find a folder list item
	this.get_folder_li = function(name)
	{
	if (this.gui_objects.folderlist)
	{
	name = String(name).replace(this.identifier_expr, '');
	return document.getElementById('rcmli'+name);
	}

	return null;
	};


	// for reordering column array, Konqueror workaround
	this.set_message_coltypes = function(coltypes)
	{
	this.coltypes = coltypes;

	// set correct list titles
	var cell, col;
	var thead = this.gui_objects.messagelist ? this.gui_objects.messagelist.tHead : null;
	for (var n=0; thead && n<this.coltypes.length; n++)
	{
	col = this.coltypes[n];
	if ((cell = thead.rows[0].cells[n+1]) && (col=='from' \|\| col=='to'))
	{
	// if we have links for sorting, it's a bit more complicated...
	if (cell.firstChild && cell.firstChild.tagName=='A')
	{
	cell.firstChild.innerHTML = this.get_label(this.coltypes[n]);
	cell.firstChild.onclick = function(){ return rcmail.command('sort', this.__col, this); };
	cell.firstChild.__col = col;
	}
	else
	cell.innerHTML = this.get_label(this.coltypes[n]);

	cell.id = 'rcmHead'+col;
	}

	if (col == 'subject' && this.message_list)
	this.message_list.subject_col = n+1;
	}
	};

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

	var tbody = this.gui_objects.messagelist.tBodies[0];
	var rowcount = tbody.rows.length;
	var even = rowcount%2;

	this.env.messages[uid] = {deleted:flags.deleted?1:0,
	replied:flags.replied?1:0,
	unread:flags.unread?1:0};

	var row = document.createElement('TR');
	row.id = 'rcmrow'+uid;
	row.className = 'message '+(even ? 'even' : 'odd')+(flags.unread ? ' unread' : '')+(flags.deleted ? ' deleted' : '');

	if (this.message_list.in_selection(uid))
	row.className += ' selected';

	var icon = flags.deleted && this.env.deletedicon ? this.env.deletedicon:
	(flags.unread && this.env.unreadicon ? this.env.unreadicon :
	(flags.replied && this.env.repliedicon ? this.env.repliedicon : this.env.messageicon));

	var col = document.createElement('TD');
	col.className = 'icon';
	col.innerHTML = icon ? '<img src="'+icon+'" alt="" border="0" />' : '';
	row.appendChild(col);

	// add each submitted col
	for (var n = 0; n < this.coltypes.length; n++)
	{
	var c = this.coltypes[n];
	col = document.createElement('TD');
	col.className = String(c).toLowerCase();
	col.innerHTML = cols[c];
	row.appendChild(col);
	}

	col = document.createElement('TD');
	col.className = 'icon';
	col.innerHTML = attachment && this.env.attachmenticon ? '<img src="'+this.env.attachmenticon+'" alt="" border="0" />' : '';
	row.appendChild(col);

	this.message_list.insert_row(row, attop);
	};


	// replace content of row count display
	this.set_rowcount = function(text)
	{
	if (this.gui_objects.countdisplay)
	this.gui_objects.countdisplay.innerHTML = text;

	// update page navigation buttons
	this.set_page_buttons();
	};

	// replace content of quota display
	this.set_quota = function()
	{
	if (this.gui_objects.quotadisplay &&
	this.gui_objects.quotadisplay.attributes.getNamedItem('display') &&
	this.gui_objects.quotadisplay.attributes.getNamedItem('id'))
	this.http_request('quotadisplay', '_display='+
	this.gui_objects.quotadisplay.attributes.getNamedItem('display').nodeValue+
	'&_id='+this.gui_objects.quotadisplay.attributes.getNamedItem('id').nodeValue, false);
	};


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

	var reg, text_obj, item;
	if (item = this.get_folder_li(mbox))
	{
	// set new text
	text_obj = item.firstChild;
	reg = /\s+$[0-9]+$$/i;

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

	// set the right classes
	this.set_classname(item, 'unread', count>0 ? true : false);
	}

	// set unread count to window title
	reg = /^$[0-9]+$\s+/i;
	if (set_title && document.title)
	{
	var doc_title = String(document.title);
	var new_title = "";

	if (count && doc_title.match(reg))
	new_title = doc_title.replace(reg, '('+count+') ');
	else if (count)
	new_title = '('+count+') '+doc_title;
	else
	new_title = doc_title.replace(reg, '');

	this.set_pagetitle(new_title);
	}
	};


	// 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];
	var rowcount = tbody.rows.length;
	var even = rowcount%2;

	var 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.toggle_editor = function(checkbox, textElementName)
	{
	var ischecked = checkbox.checked;
	if (ischecked)
	{
	tinyMCE.execCommand('mceAddControl', true, textElementName);
	}
	else
	{
	tinyMCE.execCommand('mceRemoveControl', true, textElementName);
	}
	};



	/********************************************************/
	/******* 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 querystring = query ? '&'+query : '';
	this.redirect(this.env.comm_path+'&_action='+action+querystring, lock);
	};


	this.http_sockets = new Array();

	// find a non-busy socket or create a new one
	this.get_request_obj = function()
	{
	for (var n=0; n<this.http_sockets.length; n++)
	{
	if (!this.http_sockets[n].busy)
	return this.http_sockets[n];
	}

	// create a new XMLHTTP object
	var i = this.http_sockets.length;
	this.http_sockets[i] = new rcube_http_request();

	return this.http_sockets[i];
	};


	// send a http request to the server
	this.http_request = function(action, querystring, lock)
	{
	var request_obj = this.get_request_obj();
	querystring += (querystring ? '&' : '') + '_remote=1';

	// add timestamp to request url to avoid cacheing problems in Safari
	if (bw.safari)
	querystring += '&_ts='+(new Date().getTime());

	// send request
	if (request_obj)
	{
	console.log('HTTP request: '+this.env.comm_path+'&_action='+action+'&'+querystring);

	if (lock)
	this.set_busy(true);

	var rcm = this;
	request_obj.__lock = lock ? true : false;
	request_obj.__action = action;
	request_obj.onerror = function(o){ ref.http_error(o); };
	request_obj.oncomplete = function(o){ ref.http_response(o); };
	request_obj.GET(this.env.comm_path+'&_action='+action+'&'+querystring);
	}
	};

	// send a http POST request to the server
	this.http_post = function(action, postdata, lock)
	{
	var request_obj;
	if (postdata && typeof(postdata) == 'object')
	postdata._remote = 1;
	else
	postdata += (postdata ? '&' : '') + '_remote=1';

	// send request
	if (request_obj = this.get_request_obj())
	{
	console.log('HTTP POST: '+this.env.comm_path+'&_action='+action);

	if (lock)
	this.set_busy(true);

	var rcm = this;
	request_obj.__lock = lock ? true : false;
	request_obj.__action = action;
	request_obj.onerror = function(o){ rcm.http_error(o); };
	request_obj.oncomplete = function(o){ rcm.http_response(o); };
	request_obj.POST(this.env.comm_path+'&_action='+action, postdata);
	}
	};

	// handle HTTP response
	this.http_response = function(request_obj)
	{
	var ctype = request_obj.get_header('Content-Type');
	if (ctype){
	ctype = String(ctype).toLowerCase();
	var ctype_array=ctype.split(";");
	ctype = ctype_array[0];
	}

	if (request_obj.__lock)
	this.set_busy(false);

	console.log(request_obj.get_text());

	// if we get javascript code from server -> execute it
	if (request_obj.get_text() && (ctype=='text/javascript' \|\| ctype=='application/x-javascript'))
	eval(request_obj.get_text());

	// process the response data according to the sent action
	switch (request_obj.__action)
	{
	case 'delete':
	case 'moveto':
	if (this.env.action=='show')
	this.command('list');
	else if (this.message_list)
	this.message_list.init();
	break;

	case 'list':
	if (this.env.messagecount)
	this.enable_command('purge', (this.env.mailbox==this.env.trash_mailbox \|\| this.env.mailbox==this.env.junk_mailbox));
	this.msglist_select(this.message_list);

	case 'expunge':
	this.enable_command('select-all', 'select-none', 'expunge', this.env.messagecount ? true : false);
	break;
	}

	request_obj.reset();
	};


	// handle HTTP request errors
	this.http_error = function(request_obj)
	{
	//alert('Error sending request: '+request_obj.url);

	if (request_obj.__lock)
	this.set_busy(false);

	request_obj.reset();
	request_obj.__lock = false;
	};


	// use an image to send a keep-alive siganl to the server
	this.send_keep_alive = function()
	{
	var d = new Date();
	this.http_request('keep-alive', '_t='+d.getTime());
	};


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

	this.set_busy(true, 'checkingmail');
	this.http_request('check-recent', (this.env.search_request ? '_search='+this.env.search_request+'&' : '') + '_t='+(new Date().getTime()), true);
	};


	/********************************************************/
	/******* 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);
	};


	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;
	};


	this.set_caret2start = function(obj)
	{
	if (obj.createTextRange)
	{
	var range = obj.createTextRange();
	range.collapse(true);
	range.select();
	}
	else if (obj.setSelectionRange)
	obj.setSelectionRange(0,0);

	obj.focus();
	};


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

	var type;
	for (var n=0; n<form.elements.length; n++)
	{
	type = form.elements[n];
	if (type=='hidden')
	continue;

	form.elements[n].disabled = lock;
	}
	};

	} // end object rcube_webmail



	/**
	* Class for sending HTTP requests
	* @constructor
	*/
	function rcube_http_request()
	{
	this.url = '';
	this.busy = false;
	this.xmlhttp = null;


	// reset object properties
	this.reset = function()
	{
	// set unassigned event handlers
	this.onloading = function(){ };
	this.onloaded = function(){ };
	this.oninteractive = function(){ };
	this.oncomplete = function(){ };
	this.onabort = function(){ };
	this.onerror = function(){ };

	this.url = '';
	this.busy = false;
	this.xmlhttp = null;
	}


	// create HTMLHTTP object
	this.build = function()
	{
	if (window.XMLHttpRequest)
	this.xmlhttp = new XMLHttpRequest();
	else if (window.ActiveXObject)
	{
	try { this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP"); }
	catch(e) { this.xmlhttp = null; }
	}
	else
	{

	}
	}

	// send GET request
	this.GET = function(url)
	{
	this.build();

	if (!this.xmlhttp)
	{
	this.onerror(this);
	return false;
	}

	var _ref = this;
	this.url = url;
	this.busy = true;

	this.xmlhttp.onreadystatechange = function(){ _ref.xmlhttp_onreadystatechange(); };
	this.xmlhttp.open('GET', url);
	this.xmlhttp.setRequestHeader('X-RoundCube-Referer', bw.get_cookie('roundcube_sessid'));
	this.xmlhttp.send(null);
	};


	this.POST = function(url, body, contentType)
	{
	// default value for contentType if not provided
	if (typeof(contentType) == 'undefined')
	contentType = 'application/x-www-form-urlencoded';

	this.build();

	if (!this.xmlhttp)
	{
	this.onerror(this);
	return false;
	}

	var req_body = body;
	if (typeof(body) == 'object')
	{
	req_body = '';
	for (var p in body)
	req_body += (req_body ? '&' : '') + p+'='+urlencode(body[p]);
	}

	var ref = this;
	this.url = url;
	this.busy = true;

	this.xmlhttp.onreadystatechange = function() { ref.xmlhttp_onreadystatechange(); };
	this.xmlhttp.open('POST', url, true);
	this.xmlhttp.setRequestHeader('Content-Type', contentType);
	this.xmlhttp.setRequestHeader('X-RoundCube-Referer', bw.get_cookie('roundcube_sessid'));
	this.xmlhttp.send(req_body);
	};


	// handle onreadystatechange event
	this.xmlhttp_onreadystatechange = function()
	{
	if(this.xmlhttp.readyState == 1)
	this.onloading(this);

	else if(this.xmlhttp.readyState == 2)
	this.onloaded(this);

	else if(this.xmlhttp.readyState == 3)
	this.oninteractive(this);

	else if(this.xmlhttp.readyState == 4)
	{
	try {
	if (this.xmlhttp.status == 0)
	this.onabort(this);
	else if(this.xmlhttp.status == 200)
	this.oncomplete(this);
	else
	this.onerror(this);

	this.busy = false;
	}
	catch(err)
	{
	this.onerror(this);
	this.busy = false;
	}
	}
	}

	// getter method for HTTP headers
	this.get_header = function(name)
	{
	return this.xmlhttp.getResponseHeader(name);
	};

	this.get_text = function()
	{
	return this.xmlhttp.responseText;
	};

	this.get_xml = function()
	{
	return this.xmlhttp.responseXML;
	};

	this.reset();

	} // end class rcube_http_request


	// helper function to call the init method with a delay
	function call_init(o)
	{
	if (window[o] && window[o].init)
	setTimeout(o+'.init()', 200);
	}

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