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

	$Id$
	*/
	// Constants
	var CONTROL_KEY = 1;
	var SHIFT_KEY = 2;
	var CONTROL_SHIFT_KEY = 3;

	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.selection = new Array();
	this.last_selected = 0;

	// create public reference to myself
	rcube_webmail_client = this;
	this.ref = 'rcube_webmail_client';

	// webmail client settings
	this.dblclick_time = 600;
	this.message_time = 5000;
	this.request_timeout = 180000;
	this.kepp_alive_interval = 60000;
	this.mbox_expression = new RegExp('[^0-9a-z\-_]', 'gi');
	this.env.blank_img = 'skins/default/images/blank.gif';

	// 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');


	// set environment variable
	this.set_env = function(name, value)
	{
	//if (!this.busy)
	this.env[name] = 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;
	};


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

	// check browser
	if (!bw.dom \|\| !bw.xmlhttp_test())
	{
	location.href = this.env.comm_path+'&_action=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':
	var msg_list_frame = this.gui_objects.mailcontframe;
	var msg_list = this.gui_objects.messagelist;
	if (msg_list)
	{
	msg_list_frame.onmousedown = function(e){return rcube_webmail_client.click_on_list(e);};
	this.init_messagelist(msg_list);
	this.enable_command('toggle_status', true);
	}

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

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

	if (this.env.action=='show' && 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', 'send', 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.enable_command('purge', true);

	this.set_page_buttons();

	// focus this window
	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.http_request('getunread', '');

	break;


	case 'addressbook':
	var contacts_list = this.gui_objects.contactslist;
	var ldap_contacts_list = this.gui_objects.ldapcontactslist;

	if (contacts_list)
	this.init_contactslist(contacts_list);

	if (ldap_contacts_list)
	this.init_ldapsearchlist(ldap_contacts_list);

	this.set_page_buttons();

	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);

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

	this.enable_command('ldappublicsearch', this.env.ldappublicsearch);

	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', 'delete-folder', true);

	var identities_list = this.gui_objects.identitieslist;
	if (identities_list)
	this.init_identitieslist(identities_list);

	break;

	case 'login':
	var input_user = rcube_find_object('_user');
	var input_pass = rcube_find_object('_pass');
	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);

	// disable browser's contextmenus
	// document.oncontextmenu = function(){ return false; }

	// load body click event
	document.onmousedown = function(){ return rcube_webmail_client.reset_click(); };
	document.onkeydown = function(e){ return rcube_webmail_client.key_pressed(e, msg_list_frame); };


	// 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 interval for keep-alive/recent_check signal
	if (this.kepp_alive_interval && this.task=='mail' && this.gui_objects.messagelist)
	this.kepp_alive_int = setInterval(this.ref+'.check_for_recent()', this.kepp_alive_interval);
	else if (this.task!='login')
	this.kepp_alive_int = setInterval(this.ref+'.send_keep_alive()', this.kepp_alive_interval);
	};

	// reset last clicked if user clicks on anything other than the message table
	this.reset_click = function()
	{
	this.in_message_list = false;
	};

	this.click_on_list = function(e)
	{
	if (!e)
	e = window.event;

	this.in_message_list = true;
	e.cancelBubble = true;
	};

	this.key_pressed = function(e, msg_list_frame) {
	if (this.in_message_list != true)
	return true;
	var keyCode = document.layers ? e.which : document.all ? event.keyCode : document.getElementById ? e.keyCode : 0;
	var mod_key = this.get_modifier(e);
	switch (keyCode) {
	case 40:
	case 38:
	return this.use_arrow_key(keyCode, mod_key, msg_list_frame);
	break;
	case 46:
	return this.use_delete_key(keyCode, mod_key, msg_list_frame);
	break;
	default:
	return true;
	}
	}

	this.use_arrow_key = function(keyCode, mod_key, msg_list_frame) {
	var scroll_to = 0;
	if (keyCode == 40) { // down arrow key pressed
	new_row = this.get_next_row();
	if (!new_row) return false;
	scroll_to = (Number(new_row.offsetTop) + Number(new_row.offsetHeight)) - Number(msg_list_frame.offsetHeight);
	} else if (keyCode == 38) { // up arrow key pressed
	new_row = this.get_prev_row();
	if (!new_row) return false;
	scroll_to = new_row.offsetTop;
	} else {return true;}

	this.select_row(new_row.uid,mod_key,true);

	if (((Number(new_row.offsetTop)) < (Number(msg_list_frame.scrollTop))) \|\|
	((Number(new_row.offsetTop) + Number(new_row.offsetHeight)) > (Number(msg_list_frame.scrollTop) + Number(msg_list_frame.offsetHeight)))) {
	msg_list_frame.scrollTop = scroll_to;
	}
	return false;
	};

	this.use_delete_key = function(keyCode, mod_key, msg_list_frame){
	this.command('delete','',this);
	return false;
	}

	// get all message rows from HTML table and init each row
	this.init_messagelist = function(msg_list)
	{
	if (msg_list && msg_list.tBodies[0])
	{

	this.message_rows = new Array();

	var row;
	for(var r=0; r<msg_list.tBodies[0].childNodes.length; r++)
	{
	row = msg_list.tBodies[0].childNodes[r];
	//row = msg_list.tBodies[0].rows[r];
	this.init_message_row(row);
	}
	}

	// alias to common rows array
	this.list_rows = this.message_rows;
	};


	// make references in internal array and set event handlers
	this.init_message_row = function(row)
	{
	var uid, msg_icon;

	if (String(row.id).match(/rcmrow([0-9]+)/))
	{
	uid = RegExp.$1;
	row.uid = uid;

	this.message_rows[uid] = {id:row.id, obj:row,
	classname:row.className,
	deleted:this.env.messages[uid] ? this.env.messages[uid].deleted : null,
	unread:this.env.messages[uid] ? this.env.messages[uid].unread : null,
	replied:this.env.messages[uid] ? this.env.messages[uid].replied : null};

	// set eventhandlers to table row
	row.onmousedown = function(e){ return rcube_webmail_client.drag_row(e, this.uid); };
	row.onmouseup = function(e){ return rcube_webmail_client.click_row(e, this.uid); };

	if (document.all)
	row.onselectstart = function() { return false; };

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

	// get message icon and save original icon src
	this.message_rows[uid].icon = msg_icon;
	}
	}
	};


	// 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); // input_message.focus();

	// get summary of all field values
	this.cmp_hash = this.compose_field_hash();
	};


	this.init_address_input_events = function(obj)
	{
	var handler = function(e){ return rcube_webmail_client.ksearch_keypress(e,this); };
	var handler2 = function(e){ return rcube_webmail_client.ksearch_blur(e,this); };

	if (bw.safari)
	{
	obj.addEventListener('keydown', handler, false);
	// obj.addEventListener('blur', handler2, false);
	}
	else if (bw.mz)
	{
	obj.addEventListener('keypress', handler, false);
	obj.addEventListener('blur', handler2, false);
	}
	else if (bw.ie)
	{
	obj.onkeydown = handler;
	//obj.attachEvent('onkeydown', handler);
	// obj.attachEvent('onblur', handler2, false);
	}

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



	// get all contact rows from HTML table and init each row
	this.init_contactslist = function(contacts_list)
	{
	if (contacts_list && contacts_list.tBodies[0])
	{
	this.contact_rows = new Array();

	var row;
	for(var r=0; r<contacts_list.tBodies[0].childNodes.length; r++)
	{
	row = contacts_list.tBodies[0].childNodes[r];
	this.init_table_row(row, 'contact_rows');
	}
	}

	// alias to common rows array
	this.list_rows = this.contact_rows;

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


	// get all contact rows from HTML table and init each row
	this.init_ldapsearchlist = function(ldap_contacts_list)
	{
	if (ldap_contacts_list && ldap_contacts_list.tBodies[0])
	{
	this.ldap_contact_rows = new Array();

	var row;
	for(var r=0; r<ldap_contacts_list.tBodies[0].childNodes.length; r++)
	{
	row = ldap_contacts_list.tBodies[0].childNodes[r];
	this.init_table_row(row, 'ldap_contact_rows');
	}
	}

	// alias to common rows array
	this.list_rows = this.ldap_contact_rows;
	};


	// make references in internal array and set event handlers
	this.init_table_row = function(row, array_name)
	{
	var cid;

	if (String(row.id).match(/rcmrow([0-9]+)/))
	{
	cid = RegExp.$1;
	row.cid = cid;

	this[array_name][cid] = {id:row.id,
	obj:row,
	classname:row.className};

	// set eventhandlers to table row
	row.onmousedown = function(e) { rcube_webmail_client.in_selection_before=this.cid; return false; }; // fake for drag handler
	row.onmouseup = function(e){ return rcube_webmail_client.click_row(e, this.cid); };
	}
	};


	// get all contact rows from HTML table and init each row
	this.init_identitieslist = function(identities_list)
	{
	if (identities_list && identities_list.tBodies[0])
	{
	this.identity_rows = new Array();

	var row;
	for(var r=0; r<identities_list.tBodies[0].childNodes.length; r++)
	{
	row = identities_list.tBodies[0].childNodes[r];
	this.init_table_row(row, 'identity_rows');
	}
	}

	// alias to common rows array
	this.list_rows = this.identity_rows;

	if (this.env.iid)
	this.highlight_row(this.env.iid);
	};



	/*********************************************************/
	/******* 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':
	location.href = this.env.comm_path+'&_action=logout';
	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 \|\| (this.env.search_request && props != this.env.mailbox))
	this.reset_qsearch();
	this.list_mailbox(props);
	}
	else if (this.task=='addressbook')
	this.list_contacts();
	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 'previouspage':
	this.list_page('prev');
	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))
	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')
	if (!window.frames[this.env.contentframe].rcmail)
	this.load_contact(0, 'add');
	else
	{
	if (window.frames[this.env.contentframe].rcmail.selection.length)
	this.add_ldap_contacts();
	else
	this.load_contact(0, 'add');
	}
	else if (this.task=='settings')
	{
	this.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':
	this.move_messages(props);
	break;

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

	var uid;
	var flag = 'read';

	if (props._row.uid)
	{
	uid = props._row.uid;
	this.dont_select = true;
	// toggle read/unread
	if (this.message_rows[uid].deleted) {
	flag = 'undelete';
	} else if (!this.message_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);
	break;

	case 'load-attachment':
	var url = this.env.comm_path+'&_action=get&_mbox='+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)
	{
	this.attachment_win = window.open(url+'&_frame=1', 'rcubemailattachment');
	if (this.attachment_win)
	{
	setTimeout(this.ref+'.attachment_win.focus()', 10);
	break;
	}
	}

	location.href = url;
	break;

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

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

	case 'nextmessage':
	if (this.env.next_uid)
	this.show_message(this.env.next_uid);
	//location.href = this.env.comm_path+'&_action=show&_uid='+this.env.next_uid+'&_mbox='+this.env.mailbox;
	break;

	case 'previousmessage':
	if (this.env.prev_uid)
	this.show_message(this.env.prev_uid);
	//location.href = this.env.comm_path+'&_action=show&_uid='+this.env.prev_uid+'&_mbox='+this.env.mailbox;
	break;


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

	// modify url if we're in addressbook
	if (this.task=='addressbook')
	{
	url = this.get_task_url('mail', url);
	var a_cids = new Array();

	// use contact_id passed as command parameter
	if (props)
	a_cids[a_cids.length] = props;

	// get selected contacts
	else
	{
	if (!window.frames[this.env.contentframe].rcmail.selection.length)
	{
	for (var n=0; n<this.selection.length; n++)
	a_cids[a_cids.length] = this.selection[n];
	}
	else
	{
	var frameRcmail = window.frames[this.env.contentframe].rcmail;
	// get the email address(es)
	for (var n=0; n<frameRcmail.selection.length; n++)
	a_cids[a_cids.length] = frameRcmail.ldap_contact_rows[frameRcmail.selection[n]].obj.cells[1].innerHTML;
	}
	}
	if (a_cids.length)
	url += '&_to='+a_cids.join(',');
	else
	break;

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

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

	this.set_busy(true);

	// need parent in case we are coming from the contact frame
	if (this.env.framed)
	parent.location.href = url;
	else
	location.href = url;
	break;

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

	if (!this.check_compose_input())
	break;

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

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

	case 'send-attachment':
	this.upload_file(props)
	break;

	case 'reply-all':
	case 'reply':
	var uid;
	if (uid = this.get_single_uid())
	{
	this.set_busy(true);
	location.href = this.env.comm_path+'&_action=compose&_reply_uid='+uid+'&_mbox='+escape(this.env.mailbox)+(command=='reply-all' ? '&_all=1' : '');
	}
	break;

	case 'forward':
	var uid;
	if (uid = this.get_single_uid())
	{
	this.set_busy(true);
	location.href = this.env.comm_path+'&_action=compose&_forward_uid='+uid+'&_mbox='+escape(this.env.mailbox);
	}
	break;

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

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

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

	// mail quicksearch
	case 'search':
	if (!props && this.gui_objects.qsearchbox)
	props = this.gui_objects.qsearchbox.value;
	if (props)
	this.qsearch(escape(props), this.env.mailbox);
	break;

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

	if (s)
	this.list_mailbox(this.env.mailbox);
	break;

	// ldap search
	case 'ldappublicsearch':
	if (this.gui_objects.ldappublicsearchform)
	this.gui_objects.ldappublicsearchform.submit();
	else
	this.ldappublicsearch(command);
	break;


	// user settings commands
	case 'preferences':
	location.href = this.env.comm_path;
	break;

	case 'identities':
	location.href = this.env.comm_path+'&_action=identities';
	break;

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

	case 'folders':
	location.href = this.env.comm_path+'&_action=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 'delete-folder':
	if (confirm(this.get_label('deletefolderconfirm')))
	this.delete_folder(props);
	break;

	}

	return obj ? false : true;
	};


	// set command enabled or disabled
	this.enable_command = function()
	{
	var args = this.enable_command.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'));
	}
	};


	// 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.busy)
	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.request_timeout)
	this.request_timer = setTimeout(this.ref+'.request_timed_out()', this.request_timeout);
	};


	// 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.set_busy(true);
	location.href = 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 *******/
	/*********************************************************/


	// onmouseup handler for mailboxlist item
	this.mbox_mouse_up = function(mbox)
	{
	if (this.drag_active)
	this.command('moveto', mbox);
	else
	this.command('list', mbox);

	return false;
	};


	// onmousedown-handler of message list row
	this.drag_row = function(e, id)
	{
	this.in_selection_before = this.in_selection(id) ? id : false;

	// don't do anything (another action processed before)
	if (this.dont_select)
	return false;

	// selects currently unselected row
	if (!this.in_selection_before)
	{
	var mod_key = this.get_modifier(e);
	this.select_row(id,mod_key,false);
	}

	if (this.selection.length)
	{
	this.drag_start = true;
	document.onmousemove = function(e){ return rcube_webmail_client.drag_mouse_move(e); };
	document.onmouseup = function(e){ return rcube_webmail_client.drag_mouse_up(e); };
	}

	return false;
	};


	// onmouseup-handler of message list row
	this.click_row = function(e, id)
	{
	var mod_key = this.get_modifier(e);

	// don't do anything (another action processed before)
	if (this.dont_select)
	{
	this.dont_select = false;
	return false;
	}

	// unselects currently selected row
	if (!this.drag_active && this.in_selection_before==id)
	this.select_row(id,mod_key,false);

	this.drag_start = false;
	this.in_selection_before = false;

	// row was double clicked
	if (this.task=='mail' && this.list_rows && this.list_rows[id].clicked && !mod_key)
	{
	this.show_message(id);
	return false;
	}
	else if (this.task=='addressbook')
	{
	if (this.contact_rows && this.selection.length==1)
	{
	this.load_contact(this.selection[0], 'show', true);
	// change the text for the add contact button
	var links = parent.document.getElementById('abooktoolbar').getElementsByTagName('A');
	for (i = 0; i < links.length; i++)
	{
	var onclickstring = new String(links[i].onclick);
	if (onclickstring.search('\"add\"') != -1)
	links[i].title = this.env.newcontact;
	}
	}
	else if (this.contact_rows && this.contact_rows[id].clicked)
	{
	this.load_contact(id, 'show');
	return false;
	}
	else if (this.ldap_contact_rows && !this.ldap_contact_rows[id].clicked)
	{
	// clear selection
	parent.rcmail.clear_selection();

	// disable delete
	parent.rcmail.set_button('delete', 'pas');

	// change the text for the add contact button
	var links = parent.document.getElementById('abooktoolbar').getElementsByTagName('A');
	for (i = 0; i < links.length; i++)
	{
	var onclickstring = new String(links[i].onclick);
	if (onclickstring.search('\"add\"') != -1)
	links[i].title = this.env.addcontact;
	}
	}
	// handle double click event
	else if (this.ldap_contact_rows && this.selection.length==1 && this.ldap_contact_rows[id].clicked)
	this.command('compose', this.ldap_contact_rows[id].obj.cells[1].innerHTML);
	else if (this.env.contentframe)
	{
	var elm = document.getElementById(this.env.contentframe);
	elm.style.visibility = 'hidden';
	}
	}
	else if (this.task=='settings')
	{
	if (this.selection.length==1)
	this.command('edit', this.selection[0]);
	}

	this.list_rows[id].clicked = true;
	setTimeout(this.ref+'.list_rows['+id+'].clicked=false;', this.dblclick_time);

	return false;
	};



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

	// get next and previous rows that are not hidden
	this.get_next_row = function(){
	if (!this.list_rows) return false;
	var last_selected_row = this.list_rows[this.last_selected];
	var new_row = last_selected_row.obj.nextSibling;
	while (new_row && (new_row.nodeType != 1 \|\| new_row.style.display == 'none')) {
	new_row = new_row.nextSibling;
	}
	return new_row;
	}

	this.get_prev_row = function(){
	if (!this.list_rows) return false;
	var last_selected_row = this.list_rows[this.last_selected];
	var new_row = last_selected_row.obj.previousSibling;
	while (new_row && (new_row.nodeType != 1 \|\| new_row.style.display == 'none')) {
	new_row = new_row.previousSibling;
	}
	return new_row;
	}

	// highlight/unhighlight a row
	this.highlight_row = function(id, multiple)
	{
	var selected = false

	if (this.list_rows[id] && !multiple)
	{
	this.clear_selection();
	this.selection[0] = id;
	this.list_rows[id].obj.className += ' selected';
	selected = true;
	}

	else if (this.list_rows[id])
	{
	if (!this.in_selection(id)) // select row
	{
	this.selection[this.selection.length] = id;
	this.set_classname(this.list_rows[id].obj, 'selected', true);
	}
	else // unselect row
	{
	var p = find_in_array(id, this.selection);
	var a_pre = this.selection.slice(0, p);
	var a_post = this.selection.slice(p+1, this.selection.length);
	this.selection = a_pre.concat(a_post);
	this.set_classname(this.list_rows[id].obj, 'selected', false);
	}
	selected = (this.selection.length==1);
	}

	// enable/disable commands for message
	if (this.task=='mail')
	{
	this.enable_command('show', 'reply', 'reply-all', 'forward', 'print', selected);
	this.enable_command('delete', 'moveto', this.selection.length>0 ? true : false);
	}
	else if (this.task=='addressbook')
	{
	this.enable_command('edit', /'print',/ selected);
	this.enable_command('delete', 'compose', this.selection.length>0 ? true : false);
	}
	};


	// selects or unselects the proper row depending on the modifier key pressed
	this.select_row = function(id,mod_key,with_mouse) {
	if (!mod_key) {
	this.shift_start = id;
	this.highlight_row(id, false);
	} else {
	switch (mod_key) {
	case SHIFT_KEY: {
	this.shift_select(id,false);
	break; }
	case CONTROL_KEY: {
	this.shift_start = id;
	if (!with_mouse)
	this.highlight_row(id, true);
	break;
	}
	case CONTROL_SHIFT_KEY: {
	this.shift_select(id,true);
	break;
	}
	default: {
	this.highlight_row(id, false);
	break;
	}
	}
	}
	if (this.last_selected != 0) { this.set_classname(this.list_rows[this.last_selected].obj, 'focused', false);}
	this.last_selected = id;
	this.set_classname(this.list_rows[id].obj, 'focused', true);
	};

	this.shift_select = function(id, control) {
	var from_rowIndex = this.list_rows[this.shift_start].obj.rowIndex;
	var to_rowIndex = this.list_rows[id].obj.rowIndex;

	var i = ((from_rowIndex < to_rowIndex)? from_rowIndex : to_rowIndex);
	var j = ((from_rowIndex > to_rowIndex)? from_rowIndex : to_rowIndex);

	// iterate through the entire message list
	for (var n in this.list_rows) {
	if ((this.list_rows[n].obj.rowIndex >= i) && (this.list_rows[n].obj.rowIndex <= j)) {
	if (!this.in_selection(n))
	this.highlight_row(n, true);
	} else {
	if (this.in_selection(n) && !control)
	this.highlight_row(n, true);
	}
	}
	};


	this.clear_selection = function()
	{
	for(var n=0; n<this.selection.length; n++)
	if (this.list_rows[this.selection[n]])
	this.set_classname(this.list_rows[this.selection[n]].obj, 'selected', false);

	this.selection = new Array();
	};


	// check if given id is part of the current selection
	this.in_selection = function(id)
	{
	for(var n in this.selection)
	if (this.selection[n]==id)
	return true;

	return false;
	};


	// select each row in list
	this.select_all = function(filter)
	{
	if (!this.list_rows \|\| !this.list_rows.length)
	return false;

	// reset selection first
	this.clear_selection();

	for (var n in this.list_rows)
	if (!filter \|\| this.list_rows[n][filter]==true)
	this.highlight_row(n, true);
	};


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

	if (id)
	{
	this.set_busy(true, 'loading');
	target.location.href = this.env.comm_path+'&_action=show&_uid='+id+'&_mbox='+escape(this.env.mailbox)+add_url;
	}
	};



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

	// set page=1 if changeing to another mailbox
	if (!page && mbox != this.env.mailbox)
	{
	page = 1;
	add_url += '&_refresh=1';
	this.env.current_page = page;
	this.clear_selection();
	}

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

	if (this.env.mailbox!=mbox)
	this.select_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='+escape(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.clear_message_list();

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


	this.clear_message_list = function()
	{
	var table = this.gui_objects.messagelist;
	var tbody = document.createElement('TBODY');
	table.insertBefore(tbody, table.tBodies[0]);
	table.removeChild(table.tBodies[1]);

	this.message_rows = new Array();
	this.list_rows = this.message_rows;

	};


	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='+escape(mbox);
	this.http_request('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='+escape(mbox);
	this.http_request('purge', url+add_url, lock);
	};


	// move selected messages to the specified mailbox
	this.move_messages = function(mbox)
	{
	// exit if no mailbox specified or if selection is empty
	if (!mbox \|\| !(this.selection.length \|\| this.env.uid) \|\| mbox==this.env.mailbox)
	return;

	var a_uids = new Array();

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

	// 'remove' message row from list (just hide it)
	if (this.message_rows[id].obj)
	this.message_rows[id].obj.style.display = 'none';
	}
	next_row = this.get_next_row();
	prev_row = this.get_prev_row();
	new_row = (next_row) ? next_row : prev_row;
	if (new_row) this.select_row(new_row.uid,false,false);
	}

	var lock = false;

	// show wait message
	if (this.env.action=='show')
	{
	lock = true;
	this.set_busy(true, 'movingmessage');
	}

	// send request to server
	this.http_request('moveto', '_uid='+a_uids.join(',')+'&_mbox='+escape(this.env.mailbox)+'&_target_mbox='+escape(mbox)+'&_from='+(this.env.action ? this.env.action : ''), lock);
	};

	this.permanently_remove_messages = function() {
	// exit if no mailbox specified or if selection is empty
	if (!(this.selection.length \|\| this.env.uid))
	return;

	var a_uids = new Array();

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

	// 'remove' message row from list (just hide it)
	if (this.message_rows[id].obj)
	this.message_rows[id].obj.style.display = 'none';
	}
	}
	next_row = this.get_next_row();
	prev_row = this.get_prev_row();
	new_row = (next_row) ? next_row : prev_row;
	if (new_row) this.select_row(new_row.uid,false,false);

	// send request to server
	this.http_request('delete', '_uid='+a_uids.join(',')+'&_mbox='+escape(this.env.mailbox)+'&_from='+(this.env.action ? this.env.action : ''));
	}


	// delete selected messages from the current mailbox
	this.delete_messages = function()
	{
	// exit if no mailbox specified or if selection is empty
	if (!(this.selection.length \|\| this.env.uid))
	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())
	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',this.env.uid);
	if(this.env.action=="show"){
	this.command('nextmessage','',this);
	} else {
	next_row = this.get_next_row();
	prev_row = this.get_prev_row();
	new_row = (next_row) ? next_row : prev_row;
	if (new_row) this.select_row(new_row.uid,false,false);
	}
	// 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.env.flag_for_deletion) {
	this.permanently_remove_messages();
	}
	return;
	};


	// set a specific flag to one or more messages
	this.mark_message = function(flag, uid)
	{
	var a_uids = new Array();

	if (uid)
	a_uids[0] = uid;
	else if (this.env.uid)
	a_uids[0] = this.env.uid;
	else
	{
	var id;
	for (var n=0; n<this.selection.length; n++)
	{
	id = this.selection[n];
	a_uids[a_uids.length] = id;
	}
	}
	switch (flag) {
	case 'read':
	case 'unread':
	this.toggle_read_status(flag,a_uids);
	break;
	case 'delete':
	case 'undelete':
	this.toggle_delete_status(flag,a_uids);
	break;
	}
	// send request to server
	this.http_request('mark', '_uid='+a_uids.join(',')+'&_flag='+flag);
	};

	// set class to read/unread
	this.toggle_read_status = function(flag, a_uids) {
	// mark all message rows as read/unread
	var icn_src;
	for (var i=0; i<a_uids.length; i++)
	{
	uid = a_uids[i];
	if (this.message_rows[uid])
	{
	this.message_rows[uid].unread = (flag=='unread' ? true : false);

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

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

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

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

	// mark all message rows as deleted/undeleted
	this.toggle_delete_status = function(flag, 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 icn_src;
	for (var i=0; i<a_uids.length; i++)
	{
	uid = a_uids[i];
	if (this.message_rows[uid])
	{
	this.message_rows[uid].deleted = (flag=='undelete' ? false : true);

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

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

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

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


	/*********************************************************/
	/******* 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_subject = rcube_find_object('_subject');
	var input_message = rcube_find_object('_message');

	// check for empty recipient
	if (input_to && !rcube_check_email(input_to.value, 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=='')
	{
	if (!confirm(this.get_label('nobodywarning')))
	{
	input_message.focus();
	return false;
	}
	}

	return true;
	};


	this.compose_field_hash = function()
	{
	// 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;

	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 sig, p;

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

	if (input_message)
	input_message.value = message;

	this.env.identity = id;
	};


	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
	if (!a && this.gui_objects.attachmentform && this.gui_objects.attachmentform!=this.gui_objects.messageform)
	this.gui_objects.attachmentform.reset();
	};


	// 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;
	};


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

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


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

	// send remote request to search mail
	this.qsearch = function(value, mbox)
	{
	if (value && mbox)
	{
	this.clear_message_list();
	this.set_busy(true, 'searching');
	this.http_request('search', '_search='+value+'&_mbox='+mbox, true);
	}
	};

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

	this.env.search_request = null;
	};


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

	if (!e)
	e = window.event;

	var highlight;
	var key = e.keyCode ? e.keyCode : e.which;

	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');
	//highlight.removeAttribute('class');
	this.set_classname(highlight, 'selected', false);
	}

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

	if (e.preventDefault)
	e.preventDefault();
	return false;

	case 9: // tab
	if(e.shiftKey)
	break;

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

	// 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[this.ksearch_selected]+', ';
	this.ksearch_input.value = pre + insert + end;

	//this.ksearch_input.value = this.ksearch_input.value.substring(0, p)+insert;

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

	// hide ksearch pane
	this.ksearch_hide();

	if (e.preventDefault)
	e.preventDefault();
	return false;

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

	}

	// start timer
	this.ksearch_timer = setTimeout(this.ref+'.ksearch_get_results()', 200);
	this.ksearch_input = obj;

	return true;
	};


	// 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._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];
	}

	// resize the containing layer to fit the list
	//this.ksearch_pane.resize(ul.offsetWidth, ul.offsetHeight);

	// 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.list_contacts = function(page)
	{
	var add_url = '';
	var target = window;

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

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

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

	this.set_busy(true, 'loading');
	location.href = this.env.comm_path+(page ? '&_page='+page : '')+add_url;
	};


	// send remote request to load contacts list
	this.list_contacts_remote = function(page)
	{
	// clear list
	var table = this.gui_objects.contactslist;
	var tbody = document.createElement('TBODY');
	table.insertBefore(tbody, table.tBodies[0]);
	table.tBodies[1].style.display = 'none';

	this.contact_rows = new Array();
	this.list_rows = this.contact_rows;

	// send request to server
	var url = page ? '&_page='+page : '';
	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];
	document.getElementById(this.env.contentframe).style.visibility = 'inherit';
	}
	else if (framed)
	return false;

	//if (this.env.framed && add_url=='')

	// add_url = '&_framed=1';

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


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

	var a_cids = new Array();

	if (this.env.cid)
	a_cids[a_cids.length] = this.env.cid;
	else
	{
	var id;
	for (var n=0; n<this.selection.length; n++)
	{
	id = this.selection[n];
	a_cids[a_cids.length] = id;

	// 'remove' row from list (just hide it)
	if (this.contact_rows[id].obj)
	this.contact_rows[id].obj.style.display = 'none';
	}

	// hide content frame if we delete the currently displayed contact
	if (this.selection.length==1 && this.env.contentframe)
	{
	var elm = document.getElementById(this.env.contentframe);
	elm.style.visibility = 'hidden';
	}
	}

	// send request to server
	this.http_request('delete', '_cid='+a_cids.join(',')+'&_from='+(this.env.action ? this.env.action : ''));
	};


	// update a contact record in the list
	this.update_contact_row = function(cid, cols_arr)
	{
	if (!this.contact_rows[cid] \|\| !this.contact_rows[cid].obj)
	return false;

	var row = this.contact_rows[cid].obj;
	for (var c=0; c<cols_arr.length; c++)
	if (row.cells[c])
	row.cells[c].innerHTML = cols_arr[c];

	};


	// load ldap search form
	this.ldappublicsearch = function(action)
	{
	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';
	}
	else
	return false;


	if (action == 'ldappublicsearch')
	target.location.href = this.env.comm_path+'&_action='+action+add_url;
	};

	// add ldap contacts to address book
	this.add_ldap_contacts = function()
	{
	if (window.frames[this.env.contentframe].rcmail)
	{
	var frame = window.frames[this.env.contentframe];

	// build the url
	var url = '&_framed=1';
	var emails = '&_emails=';
	var names = '&_names=';
	var end = '';
	for (var n=0; n<frame.rcmail.selection.length; n++)
	{
	end = n < frame.rcmail.selection.length - 1 ? ',' : '';
	emails += frame.rcmail.ldap_contact_rows[frame.rcmail.selection[n]].obj.cells[1].innerHTML + end;
	names += frame.rcmail.ldap_contact_rows[frame.rcmail.selection[n]].obj.cells[0].innerHTML + end;
	}

	frame.location.href = this.env.comm_path + '&_action=save&_framed=1' + emails + names;
	}
	return false;
	}



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


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

	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;
	}
	};



	this.delete_identity = function(id)
	{
	// exit if no mailbox specified or if selection is empty
	if (!(this.selection.length \|\| this.env.iid))
	return;

	if (!id)
	id = this.env.iid ? this.env.iid : this.selection[0];

	/*
	// 'remove' row from list (just hide it)
	if (this.identity_rows && this.identity_rows[id].obj)
	{
	this.clear_selection();
	this.identity_rows[id].obj.style.display = 'none';
	}
	*/

	// if (this.env.framed && id)
	this.set_busy(true);
	location.href = this.env.comm_path+'&_action=delete-identity&_iid='+id;
	// else if (id)
	// this.http_request('delete-identity', '_iid='+id);
	};


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

	if (name)
	this.http_request('create-folder', '_name='+escape(name), true);
	else if (form.elements['_folder_name'])
	form.elements['_folder_name'].focus();
	};


	this.delete_folder = function(folder)
	{
	if (folder)
	{
	this.http_request('delete-folder', '_mboxes='+escape(folder));
	}
	};


	this.remove_folder_row = function(folder)
	{
	for (var id in this.env.subscriptionrows)
	if (this.env.subscriptionrows[id]==folder)
	break;

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


	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_request('subscribe', '_mboxes='+escape(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_request('unsubscribe', '_mboxes='+escape(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_request(action, '_mboxes='+escape(a_folders.join(',')));
	}
	}

	};


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

	var tbody = this.gui_objects.subscriptionlist.tBodies[0];
	var id = tbody.childNodes.length+1;

	// clone a table row
	var row = this.clone_table_row(tbody.rows[0]);
	row.id = 'rcmrow'+id;
	tbody.appendChild(row);

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

	// set folder name
	row.cells[0].innerHTML = name;
	if (row.cells[1].firstChild.tagName=='INPUT')
	{
	row.cells[1].firstChild.value = name;
	row.cells[1].firstChild.checked = true;
	}
	if (row.cells[2].firstChild.tagName=='A')
	row.cells[2].firstChild.onclick = new Function(this.ref+".command('delete-folder','"+name+"')");

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


	// 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;
	};


	/*********************************************************/
	/******* 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('previouspage', (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;
	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;
	}
	}
	};


	// 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 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;
	};


	// display a specific alttext
	this.alttext = function(text)
	{

	};


	// 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;
	}

	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>';

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

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

	if (!hold)
	this.message_timer = setTimeout(this.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_mailbox = function(mbox)
	{
	if (this.gui_objects.mailboxlist)
	{
	var item, reg, text_obj;
	var s_current = this.env.mailbox.toLowerCase().replace(this.mbox_expression, '');
	var s_mbox = String(mbox).toLowerCase().replace(this.mbox_expression, '');
	var s_current = this.env.mailbox.toLowerCase().replace(this.mbox_expression, '');

	var current_li = document.getElementById('rcmbx'+s_current);
	var mbox_li = document.getElementById('rcmbx'+s_mbox);

	if (current_li)
	this.set_classname(current_li, 'selected', false);
	if (mbox_li)
	this.set_classname(mbox_li, 'selected', true);
	}

	this.env.mailbox = mbox;
	};


	// create a table row in the message list
	this.add_message_row = function(uid, cols, flags, attachment, attop)
	{
	if (!this.gui_objects.messagelist \|\| !this.gui_objects.messagelist.tBodies[0])
	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.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 c in cols)
	{
	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);

	if (attop && tbody.rows.length)
	tbody.insertBefore(row, tbody.firstChild);
	else
	tbody.appendChild(row);

	this.init_message_row(row);
	};


	// 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(text)
	{
	if (this.gui_objects.quotadisplay)
	this.gui_objects.quotadisplay.innerHTML = text;
	};


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

	var item, reg, text_obj;
	mbox = String(mbox).toLowerCase().replace(this.mbox_expression, '');
	item = document.getElementById('rcmbx'+mbox);

	if (item && item.className && item.className.indexOf('mailbox '+mbox)>=0)
	{
	// 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 && count && document.title)
	{
	var doc_title = String(document.title);

	if (count && doc_title.match(reg))
	document.title = doc_title.replace(reg, '('+count+') ');
	else if (count)
	document.title = '('+count+') '+doc_title;
	else
	document.title = doc_title.replace(reg, '');
	}
	// remove unread count from window title
	else if (document.title)
	{
	document.title = document.title.replace(reg, '');
	}
	};


	// add row to contacts list
	this.add_contact_row = function(cid, cols)
	{
	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.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);
	}

	tbody.appendChild(row);
	this.init_table_row(row, 'contact_rows');
	};



	/********************************************************/
	/******* drag & drop methods *******/
	/********************************************************/


	this.drag_mouse_move = function(e)
	{
	if (this.drag_start)
	{
	if (!this.draglayer)
	this.draglayer = new rcube_layer('rcmdraglayer', {x:0, y:0, width:300, vis:0, zindex:2000});

	// get subjects of selectedd messages
	var names = '';
	var c, subject, obj;
	for(var n=0; n<this.selection.length; n++)
	{
	if (n>12) // only show 12 lines
	{
	names += '...';
	break;
	}

	if (this.message_rows[this.selection[n]].obj)
	{
	obj = this.message_rows[this.selection[n]].obj;
	subject = '';

	for(c=0; c<obj.childNodes.length; c++)
	if (!subject && obj.childNodes[c].nodeName=='TD' && obj.childNodes[c].firstChild && obj.childNodes[c].firstChild.nodeType==3)
	{
	subject = obj.childNodes[c].firstChild.data;
	names += (subject.length > 50 ? subject.substring(0, 50)+'...' : subject) + '<br />';
	}
	}
	}

	this.draglayer.write(names);
	this.draglayer.show(1);
	}

	var pos = this.get_mouse_pos(e);
	this.draglayer.move(pos.x+20, pos.y-5);

	this.drag_start = false;
	this.drag_active = true;

	return false;
	};


	this.drag_mouse_up = function()
	{
	document.onmousemove = null;

	if (this.draglayer && this.draglayer.visible)
	this.draglayer.show(0);

	this.drag_active = false;

	return false;
	};



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


	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 += '&_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)
	{
	// prompt('request', this.env.comm_path+'&_action='+escape(action)+'&'+querystring);
	console('HTTP request: '+this.env.comm_path+'&_action='+escape(action)+'&'+querystring);

	if (lock)
	this.set_busy(true);

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


	// 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(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');
	break;

	case 'list':
	if (this.env.messagecount)
	this.enable_command('purge', (this.env.mailbox==this.env.trash_mailbox));

	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()
	{
	var d = new Date();
	this.http_request('check-recent', '_t='+d.getTime());
	};


	/********************************************************/
	/******* 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.selection.length==1 ? this.selection[0] : null);
	};

	// same as above but for contacts
	this.get_single_cid = function()
	{
	return this.env.cid ? this.env.cid : (this.selection.length==1 ? this.selection[0] : null);
	};


	/* deprecated methods

	// check if Shift-key is pressed on event
	this.check_shiftkey = function(e)
	{
	if(!e && window.event)
	e = window.event;

	if(bw.linux && bw.ns4 && e.modifiers)
	return true;
	else if((bw.ns4 && e.modifiers & Event.SHIFT_MASK) \|\| (e && e.shiftKey))
	return true;
	else
	return false;
	}

	// check if Shift-key is pressed on event
	this.check_ctrlkey = function(e)
	{
	if(!e && window.event)
	e = window.event;

	if(bw.linux && bw.ns4 && e.modifiers)
	return true;
	else if (bw.mac)
	return this.check_shiftkey(e);
	else if((bw.ns4 && e.modifiers & Event.CTRL_MASK) \|\| (e && e.ctrlKey))
	return true;
	else
	return false;
	}
	*/

	// returns modifier key (constants defined at top of file)
	this.get_modifier = function(e)
	{
	var opcode = 0;
	e = e \|\| window.event;

	if (bw.mac && e)
	{
	opcode += (e.metaKey && CONTROL_KEY) + (e.shiftKey && SHIFT_KEY);
	return opcode;
	}
	if (e)
	{
	opcode += (e.ctrlKey && CONTROL_KEY) + (e.shiftKey && SHIFT_KEY);
	return opcode;
	}
	if (e.cancelBubble)
	{
	e.cancelBubble = true;
	e.returnValue = false;
	}
	else if (e.preventDefault)
	e.preventDefault();
	}


	this.get_mouse_pos = function(e)
	{
	if(!e) e = window.event;
	var mX = (e.pageX) ? e.pageX : e.clientX;
	var mY = (e.pageY) ? e.pageY : e.clientY;

	if(document.body && document.all)
	{
	mX += document.body.scrollLeft;
	mY += document.body.scrollTop;
	}

	return { x:mX, y:mY };
	};


	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 HTTP requests
	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)
	this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
	else
	{

	}
	}

	// sedn 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.send(null);
	};


	this.POST = function(url, a_param)
	{
	// not implemented yet
	};


	// 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)
	{
	if(this.xmlhttp.status == 0)
	this.onabort(this);
	else if(this.xmlhttp.status == 200)
	this.oncomplete(this);
	else
	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



	function console(str)
	{
	if (document.debugform && document.debugform.console)
	document.debugform.console.value += str+'\n--------------------------------------\n';
	}


	// set onload handler
	window.onload = function(e)
	{
	if (window.rcube_webmail_client)
	rcube_webmail_client.init();
	};

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