From 197203727417a03d87053a47e5aa5175a76e3e0b Mon Sep 17 00:00:00 2001
From: Aleksander Machniak <alec@alec.pl>
Date: Thu, 17 Oct 2013 04:24:53 -0400
Subject: [PATCH] Fix vulnerability in handling _session argument of utils/save-prefs (#1489382)

---
 program/js/app.js |  606 ++++++++++++++++++++++++++++++------------------------
 1 files changed, 339 insertions(+), 267 deletions(-)

diff --git a/program/js/app.js b/program/js/app.js
index 40aa76f..8ec2095 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -20,7 +20,7 @@
 
 function rcube_webmail()
 {
-  this.env = {};
+  this.env = { recipients_separator:',', recipients_delimiter:', ' };
   this.labels = {};
   this.buttons = {};
   this.buttons_sel = {};
@@ -37,7 +37,7 @@
 
   // webmail client settings
   this.dblclick_time = 500;
-  this.message_time = 2000;
+  this.message_time = 4000;
 
   this.identifier_expr = new RegExp('[^0-9a-z\-_]', 'gi');
 
@@ -128,7 +128,7 @@
   // initialize webmail client
   this.init = function()
   {
-    var p = this;
+    var n, p = this;
     this.task = this.env.task;
 
     // check browser
@@ -138,12 +138,28 @@
     }
 
     // find all registered gui containers
-    for (var n in this.gui_containers)
+    for (n in this.gui_containers)
       this.gui_containers[n] = $('#'+this.gui_containers[n]);
 
     // find all registered gui objects
-    for (var n in this.gui_objects)
+    for (n in this.gui_objects)
       this.gui_objects[n] = rcube_find_object(this.gui_objects[n]);
+
+    // clickjacking protection
+    if (this.env.x_frame_options) {
+      try {
+        // bust frame if not allowed
+        if (this.env.x_frame_options == 'deny' && top.location.href != self.location.href)
+          top.location.href = self.location.href;
+        else if (top.location.hostname != self.location.hostname)
+          throw 1;
+      } catch (e) {
+        // possible clickjacking attack: disable all form elements
+        $('form').each(function(){ ref.lock_form(this, true); });
+        this.display_message("Blocked: possible clickjacking attack!", 'error');
+        return;
+      }
+    }
 
     // init registered buttons
     this.init_buttons();
@@ -155,7 +171,7 @@
     }
 
     // enable general commands
-    this.enable_command('logout', 'mail', 'addressbook', 'settings', 'save-pref', 'compose', 'undo', true);
+    this.enable_command('logout', 'mail', 'addressbook', 'settings', 'save-pref', 'compose', 'undo', 'switch-task', true);
 
     if (this.env.permaurl)
       this.enable_command('permaurl', true);
@@ -207,12 +223,13 @@
           'moveto', 'copy', 'delete', 'open', 'mark', 'edit', 'viewsource', 'download',
           'print', 'load-attachment', 'load-headers', 'forward-attachment'];
 
-        if (this.env.action=='show' || this.env.action=='preview') {
+        if (this.env.action == 'show' || this.env.action == 'preview') {
           this.enable_command(this.env.message_commands, this.env.uid);
           this.enable_command('reply-list', this.env.list_post);
 
           if (this.env.action == 'show') {
-            this.http_request('pagenav', '_uid='+this.env.uid+'&_mbox='+urlencode(this.env.mailbox),
+            this.http_request('pagenav', '_uid='+this.env.uid+'&_mbox='+urlencode(this.env.mailbox)
+              + (this.env.search_request ? '&_search='+this.env.search_request : ''),
               this.display_message('', 'loading'));
           }
 
@@ -252,7 +269,7 @@
         // show printing dialog
         else if (this.env.action == 'print' && this.env.uid)
           if (bw.safari)
-            window.setTimeout('window.print()', 10);
+            setTimeout('window.print()', 10);
           else
             window.print();
 
@@ -380,7 +397,12 @@
           $('#rcmloginpwd').focus();
 
         // detect client timezone
-        $('#rcmlogintz').val(new Date().getTimezoneOffset() / -60);
+        var dt = new Date(),
+          tz = dt.getTimezoneOffset() / -60,
+          stdtz = dt.getStdTimezoneOffset() / -60;
+
+        $('#rcmlogintz').val(stdtz);
+        $('#rcmlogindst').val(tz > stdtz ? 1 : 0);
 
         // display 'loading' message on form submit, lock submit button
         $('form').submit(function () {
@@ -439,6 +461,8 @@
   // execute a specific command on the web client
   this.command = function(command, props, obj)
   {
+    var ret, uid, cid, url, flag;
+
     if (obj && obj.blur)
       obj.blur();
 
@@ -455,31 +479,33 @@
     }
 
     // check input before leaving compose step
-    if (this.task=='mail' && this.env.action=='compose' && $.inArray(command, this.env.compose_commands)<0) {
+    if (this.task == 'mail' && this.env.action == 'compose' && $.inArray(command, this.env.compose_commands)<0) {
       if (this.cmp_hash != this.compose_field_hash() && !confirm(this.get_label('notsentwarning')))
         return false;
     }
 
     // process external commands
     if (typeof this.command_handlers[command] === 'function') {
-      var ret = this.command_handlers[command](props, obj);
+      ret = this.command_handlers[command](props, obj);
       return ret !== undefined ? ret : (obj ? false : true);
     }
     else if (typeof this.command_handlers[command] === 'string') {
-      var ret = window[this.command_handlers[command]](props, obj);
+      ret = window[this.command_handlers[command]](props, obj);
       return ret !== undefined ? ret : (obj ? false : true);
     }
 
     // trigger plugin hooks
     this.triggerEvent('actionbefore', {props:props, action:command});
-    var ret = this.triggerEvent('before'+command, props);
+    ret = this.triggerEvent('before'+command, props);
     if (ret !== undefined) {
-      // abort if one the handlers returned false
+      // abort if one of the handlers returned false
       if (ret === false)
         return false;
       else
         props = ret;
     }
+
+    ret = undefined;
 
     // process internal command
     switch (command) {
@@ -510,7 +536,6 @@
         return false;
 
       case 'open':
-        var uid;
         if (uid = this.get_single_uid()) {
           obj.href = '?_task='+this.env.task+'&_action=show&_mbox='+urlencode(this.env.mailbox)+'&_uid='+uid;
           return true;
@@ -579,7 +604,7 @@
       // common commands used in multiple tasks
       case 'show':
         if (this.task == 'mail') {
-          var uid = this.get_single_uid();
+          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);
@@ -588,7 +613,7 @@
           }
         }
         else if (this.task == 'addressbook') {
-          var cid = props ? props : this.get_single_cid();
+          cid = props ? props : this.get_single_cid();
           if (cid && !(this.env.action == 'show' && cid == this.env.cid))
             this.load_contact(cid, 'show');
         }
@@ -604,13 +629,12 @@
         break;
 
       case 'edit':
-        var cid;
         if (this.task=='addressbook' && (cid = this.get_single_cid()))
           this.load_contact(cid, 'edit');
         else if (this.task=='settings' && props)
           this.load_identity(props, 'edit-identity');
         else if (this.task=='mail' && (cid = this.get_single_uid())) {
-          var url = (this.env.mailbox == this.env.drafts_mailbox) ? '_draft_uid=' : '_uid=';
+          url = (this.env.mailbox == this.env.drafts_mailbox) ? '_draft_uid=' : '_uid=';
           this.goto_url('compose', url+cid+'&_mbox='+urlencode(this.env.mailbox), true);
         }
         break;
@@ -688,7 +712,7 @@
         if (props && !props._row)
           break;
 
-        var uid, flag = 'read';
+        flag = 'read';
 
         if (props._row.uid) {
           uid = props._row.uid;
@@ -708,7 +732,7 @@
         if (props && !props._row)
           break;
 
-        var uid, flag = 'flagged';
+        flag = 'flagged';
 
         if (props._row.uid) {
           uid = props._row.uid;
@@ -722,7 +746,7 @@
       case 'always-load':
         if (this.env.uid && this.env.sender) {
           this.add_contact(urlencode(this.env.sender));
-          window.setTimeout(function(){ ref.command('load-images'); }, 300);
+          setTimeout(function(){ ref.command('load-images'); }, 300);
           break;
         }
 
@@ -740,7 +764,7 @@
             qstring += '&_safe=1';
           this.attachment_win = window.open(this.env.comm_path+'&_action=get&'+qstring+'&_frame=1', 'rcubemailattachment');
           if (this.attachment_win) {
-            window.setTimeout(function(){ ref.attachment_win.focus(); }, 10);
+            setTimeout(function(){ ref.attachment_win.focus(); }, 10);
             break;
           }
         }
@@ -804,17 +828,11 @@
         break;
 
       case 'compose':
-        var url = this.url('mail/compose');
+        url = this.url('mail/compose');
 
         if (this.task == 'mail') {
           url += '&_mbox='+urlencode(this.env.mailbox);
-
-          if (this.env.mailbox == this.env.drafts_mailbox) {
-            var uid;
-            if (uid = this.get_single_uid())
-              url += '&_draft_uid='+uid;
-          }
-          else if (props)
+          if (props)
              url += '&_to='+urlencode(props);
         }
         // modify url if we're in addressbook
@@ -838,7 +856,9 @@
           }
 
           if (a_cids.length)
-            this.http_post('mailto', {_cid: a_cids.join(','), _source: this.env.source}, true);
+            this.http_post('mailto', { _cid: a_cids.join(','), _source: this.env.source}, true);
+          else if (this.env.group)
+            this.http_post('mailto', { _gid: this.env.group, _source: this.env.source}, true);
 
           break;
         }
@@ -859,19 +879,25 @@
         break;
 
       case 'savedraft':
+        var form = this.gui_objects.messageform, msgid;
+
         // Reset the auto-save timer
-        self.clearTimeout(this.save_timer);
+        clearTimeout(this.save_timer);
 
-        if (!this.gui_objects.messageform)
+        // saving Drafts is disabled
+        if (!form)
           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())
+        // compose form did not change
+        if (this.cmp_hash == this.compose_field_hash()) {
+          this.auto_save_start();
           break;
+        }
 
-        var form = this.gui_objects.messageform,
-          msgid = this.set_busy(true, 'savingmessage');
+        // re-set keep-alive timeout
+        this.start_keepalive();
+
+        msgid = this.set_busy(true, 'savingmessage');
 
         form.target = "savetarget";
         form._draft.value = '1';
@@ -883,11 +909,11 @@
         if (!this.gui_objects.messageform)
           break;
 
-        if (!this.check_compose_input())
+        if (!props.nocheck && !this.check_compose_input(command))
           break;
 
         // Reset the auto-save timer
-        self.clearTimeout(this.save_timer);
+        clearTimeout(this.save_timer);
 
         // all checks passed, send message
         var lang = this.spellcheck_lang(),
@@ -906,7 +932,7 @@
 
       case 'send-attachment':
         // Reset the auto-save timer
-        self.clearTimeout(this.save_timer);
+        clearTimeout(this.save_timer);
 
         this.upload_file(props)
         break;
@@ -918,9 +944,8 @@
       case 'reply-all':
       case 'reply-list':
       case 'reply':
-        var uid;
         if (uid = this.get_single_uid()) {
-          var url = '_reply_uid='+uid+'&_mbox='+urlencode(this.env.mailbox);
+          url = '_reply_uid='+uid+'&_mbox='+urlencode(this.env.mailbox);
           if (command == 'reply-all')
             // do reply-list, when list is detected and popup menu wasn't used 
             url += '&_all=' + (!props && this.commands['reply-list'] ? 'list' : 'all');
@@ -933,7 +958,6 @@
 
       case 'forward-attachment':
       case 'forward':
-        var uid, url;
         if (uid = this.get_single_uid()) {
           url = '_forward_uid='+uid+'&_mbox='+urlencode(this.env.mailbox);
           if (command == 'forward-attachment' || (!props && this.env.forward_attachment))
@@ -943,11 +967,10 @@
         break;
 
       case 'print':
-        var uid;
         if (uid = this.get_single_uid()) {
           ref.printwin = window.open(this.env.comm_path+'&_action=print&_uid='+uid+'&_mbox='+urlencode(this.env.mailbox)+(this.env.safemode ? '&_safe=1' : ''));
           if (this.printwin) {
-            window.setTimeout(function(){ ref.printwin.focus(); }, 20);
+            setTimeout(function(){ ref.printwin.focus(); }, 20);
             if (this.env.action != 'show')
               this.mark_message('read', uid);
           }
@@ -955,16 +978,14 @@
         break;
 
       case 'viewsource':
-        var uid;
         if (uid = this.get_single_uid()) {
           ref.sourcewin = window.open(this.env.comm_path+'&_action=viewsource&_uid='+uid+'&_mbox='+urlencode(this.env.mailbox));
           if (this.sourcewin)
-            window.setTimeout(function(){ ref.sourcewin.focus(); }, 20);
+            setTimeout(function(){ ref.sourcewin.focus(); }, 20);
           }
         break;
 
       case 'download':
-        var uid;
         if (uid = this.get_single_uid())
           this.goto_url('viewsource', '&_uid='+uid+'&_mbox='+urlencode(this.env.mailbox)+'&_save=1');
         break;
@@ -1045,24 +1066,26 @@
       // unified command call (command name == function name)
       default:
         var func = command.replace(/-/g, '_');
-        if (this[func] && typeof this[func] === 'function')
-          this[func](props);
+        if (this[func] && typeof this[func] === 'function') {
+          ret = this[func](props);
+        }
         break;
     }
 
-    this.triggerEvent('after'+command, props);
+    if (this.triggerEvent('after'+command, props) === false)
+      ret = false;
     this.triggerEvent('actionafter', {props:props, action:command});
 
-    return obj ? false : true;
+    return ret === false ? false : obj ? false : true;
   };
 
   // set command(s) enabled or disabled
   this.enable_command = function()
   {
-    var args = Array.prototype.slice.call(arguments),
+    var i, n, args = Array.prototype.slice.call(arguments),
       enable = args.pop(), cmd;
 
-    for (var n=0; n<args.length; n++) {
+    for (n=0; n<args.length; n++) {
       cmd = args[n];
       // argument of type array
       if (typeof cmd === 'string') {
@@ -1071,7 +1094,7 @@
       }
       // push array elements into commands array
       else {
-        for (var i in cmd)
+        for (i in cmd)
           args.push(cmd[i]);
       }
     }
@@ -1103,7 +1126,7 @@
 
     // set timer for requests
     if (a && this.env.request_timeout)
-      this.request_timer = window.setTimeout(function(){ ref.request_timed_out(); }, this.env.request_timeout * 1000);
+      this.request_timer = setTimeout(function(){ ref.request_timed_out(); }, this.env.request_timeout * 1000);
 
     return id;
   };
@@ -1155,7 +1178,7 @@
     if (this.is_framed())
       parent.rcmail.reload(delay);
     else if (delay)
-      window.setTimeout(function(){ rcmail.reload(); }, delay);
+      setTimeout(function(){ rcmail.reload(); }, delay);
     else if (window.location)
       location.href = this.env.comm_path + (this.env.action ? '&_action='+this.env.action : '');
   };
@@ -1196,6 +1219,24 @@
       this.env[prop.env] = prop.value;
 
     this.http_post('save-pref', request);
+  };
+
+  this.html_identifier = function(str, encode)
+  {
+    str = String(str);
+    if (encode)
+      return Base64.encode(str).replace(/=+$/, '').replace(/\+/g, '-').replace(/\//g, '_');
+    else
+      return str.replace(this.identifier_expr, '_');
+  };
+
+  this.html_identifier_decode = function(str)
+  {
+    str = String(str).replace(/-/g, '+').replace(/_/g, '/');
+
+    while (str.length % 4) str += '=';
+
+    return Base64.decode(str);
   };
 
 
@@ -1244,13 +1285,14 @@
       this.initialBodyScrollTop = bw.ie ? 0 : window.pageYOffset;
       this.initialListScrollTop = this.gui_objects.folderlist.parentNode.scrollTop;
 
-      var li, pos, list, height;
-      list = $(this.gui_objects.folderlist);
-      pos = list.offset();
+      var k, li, height,
+        list = $(this.gui_objects.folderlist);
+        pos = list.offset();
+
       this.env.folderlist_coords = { x1:pos.left, y1:pos.top, x2:pos.left + list.width(), y2:pos.top + list.height() };
 
       this.env.folder_coords = [];
-      for (var k in model) {
+      for (k in model) {
         if (li = this.get_folder_li(k)) {
           // only visible folders
           if (height = li.firstChild.offsetHeight) {
@@ -1269,7 +1311,7 @@
     this.env.last_folder_target = null;
 
     if (this.folder_auto_timer) {
-      window.clearTimeout(this.folder_auto_timer);
+      clearTimeout(this.folder_auto_timer);
       this.folder_auto_timer = null;
       this.folder_auto_expand = null;
     }
@@ -1286,19 +1328,18 @@
   this.drag_move = function(e)
   {
     if (this.gui_objects.folderlist && this.env.folder_coords) {
-      // offsets to compensate for scrolling while dragging a message
-      var boffset = bw.ie ? -document.documentElement.scrollTop : this.initialBodyScrollTop;
-      var moffset = this.initialListScrollTop-this.gui_objects.folderlist.parentNode.scrollTop;
-      var toffset = -moffset-boffset;
-      var li, div, pos, mouse, check, oldclass,
-        layerclass = 'draglayernormal';
+      var k, li, div, check, oldclass,
+        layerclass = 'draglayernormal',
+        mouse = rcube_event.get_mouse_pos(e),
+        pos = this.env.folderlist_coords,
+        // offsets to compensate for scrolling while dragging a message
+        boffset = bw.ie ? -document.documentElement.scrollTop : this.initialBodyScrollTop,
+        moffset = this.initialListScrollTop-this.gui_objects.folderlist.parentNode.scrollTop;
 
       if (this.contact_list && this.contact_list.draglayer)
         oldclass = this.contact_list.draglayer.attr('class');
 
-      mouse = rcube_event.get_mouse_pos(e);
-      pos = this.env.folderlist_coords;
-      mouse.y += toffset;
+      mouse.y += -moffset-boffset;
 
       // if mouse pointer is outside of folderlist
       if (mouse.x < pos.x1 || mouse.x >= pos.x2 || mouse.y < pos.y1 || mouse.y >= pos.y2) {
@@ -1313,25 +1354,25 @@
       }
 
       // over the folders
-      for (var k in this.env.folder_coords) {
+      for (k in this.env.folder_coords) {
         pos = this.env.folder_coords[k];
         if (mouse.x >= pos.x1 && mouse.x < pos.x2 && mouse.y >= pos.y1 && mouse.y < pos.y2){
-         if ((check = this.check_droptarget(k))) {
+          if ((check = this.check_droptarget(k))) {
             li = this.get_folder_li(k);
             div = $(li.getElementsByTagName('div')[0]);
 
             // if the folder is collapsed, expand it after 1sec and restart the drag & drop process.
             if (div.hasClass('collapsed')) {
               if (this.folder_auto_timer)
-                window.clearTimeout(this.folder_auto_timer);
+                clearTimeout(this.folder_auto_timer);
 
-              this.folder_auto_expand = k;
-              this.folder_auto_timer = window.setTimeout(function() {
-                  rcmail.command('collapse-folder', rcmail.folder_auto_expand);
-                  rcmail.drag_start(null);
-                }, 1000);
+              this.folder_auto_expand = this.env.mailboxes[k].id;
+              this.folder_auto_timer = setTimeout(function() {
+                rcmail.command('collapse-folder', rcmail.folder_auto_expand);
+                rcmail.drag_start(null);
+              }, 1000);
             } else if (this.folder_auto_timer) {
-              window.clearTimeout(this.folder_auto_timer);
+              clearTimeout(this.folder_auto_timer);
               this.folder_auto_timer = null;
               this.folder_auto_expand = null;
             }
@@ -1355,31 +1396,30 @@
     }
   };
 
-  this.collapse_folder = function(id)
+  this.collapse_folder = function(name)
   {
-    var li = this.get_folder_li(id),
-      div = $(li.getElementsByTagName('div')[0]);
-
-    if (!div || (!div.hasClass('collapsed') && !div.hasClass('expanded')))
-      return;
-
-    var ul = $(li.getElementsByTagName('ul')[0]);
+    var li = this.get_folder_li(name, '', true),
+      div = $('div:first', li),
+      ul = $('ul:first', li);
 
     if (div.hasClass('collapsed')) {
       ul.show();
       div.removeClass('collapsed').addClass('expanded');
-      var reg = new RegExp('&'+urlencode(id)+'&');
+      var reg = new RegExp('&'+urlencode(name)+'&');
       this.env.collapsed_folders = this.env.collapsed_folders.replace(reg, '');
     }
-    else {
+    else if (div.hasClass('expanded')) {
       ul.hide();
       div.removeClass('expanded').addClass('collapsed');
-      this.env.collapsed_folders = this.env.collapsed_folders+'&'+urlencode(id)+'&';
+      this.env.collapsed_folders = this.env.collapsed_folders+'&'+urlencode(name)+'&';
 
-      // select parent folder if one of its childs is currently selected
-      if (this.env.mailbox.indexOf(id + this.env.delimiter) == 0)
-        this.command('list', id);
+      // select the folder if one of its childs is currently selected
+      // don't select if it's virtual (#1488346)
+      if (this.env.mailbox.indexOf(name + this.env.delimiter) == 0 && !$(li).hasClass('virtual'))
+        this.command('list', name);
     }
+    else
+      return;
 
     // Work around a bug in IE6 and IE7, see #1485309
     if (bw.ie6 || bw.ie7) {
@@ -1391,12 +1431,16 @@
     }
 
     this.command('save-pref', { name: 'collapsed_folders', value: this.env.collapsed_folders });
-    this.set_unread_count_display(id, false);
+    this.set_unread_count_display(name, false);
   };
 
   this.doc_mouse_up = function(e)
   {
     var model, list, li, id;
+
+    // ignore event if jquery UI dialog is open
+    if ($(rcube_event.get_target(e)).closest('.ui-dialog, .ui-widget-overlay').length)
+      return;
 
     if (list = this.message_list) {
       if (!rcube_mouse_is_over(e, list.list.parentNode))
@@ -1480,7 +1524,7 @@
 
     // start timer for message preview (wait for double click)
     if (selected && this.env.contentframe && !list.multi_selecting && !this.dummy_select)
-      this.preview_timer = window.setTimeout(function(){ ref.msglist_get_preview(); }, 200);
+      this.preview_timer = setTimeout(function(){ ref.msglist_get_preview(); }, 200);
     else if (this.env.contentframe)
       this.show_contentframe(false);
   };
@@ -1497,7 +1541,7 @@
           clearTimeout(this.preview_timer);
         if (this.preview_read_timer)
           clearTimeout(this.preview_read_timer);
-        this.preview_timer = window.setTimeout(function(){ ref.msglist_get_preview(); }, 200);
+        this.preview_timer = setTimeout(function(){ ref.msglist_get_preview(); }, 200);
       }
     }
   };
@@ -1556,7 +1600,7 @@
     for (i=0; i<cols.length; i++)
       if (cols[i].id && cols[i].id.match(/^rcm/)) {
         name = cols[i].id.replace(/^rcm/, '');
-        this.env.coltypes.push(name == 'to' ? 'from' : name);
+        this.env.coltypes.push(name);
       }
 
     if ((found = $.inArray('flag', this.env.coltypes)) >= 0)
@@ -1663,23 +1707,18 @@
       flags: flags.extra_flags
     });
 
-    var c, html, tree = expando = '',
+    var c, n, col, html, tree = '', expando = '',
       list = this.message_list,
       rows = list.rows,
-      tbody = this.gui_objects.messagelist.tBodies[0],
-      rowcount = tbody.rows.length,
-      even = rowcount%2,
       message = this.env.messages[uid],
       css_class = 'message'
-        + (even ? ' even' : ' odd')
         + (!flags.seen ? ' unread' : '')
         + (flags.deleted ? ' deleted' : '')
         + (flags.flagged ? ' flagged' : '')
         + (flags.unread_children && flags.seen && !this.env.autoexpand_threads ? ' unroot' : '')
         + (message.selected ? ' selected' : ''),
       // for performance use DOM instead of jQuery here
-      row = document.createElement('tr'),
-      col = document.createElement('td');
+      row = document.createElement('tr');
 
     row.id = 'rcmrow'+uid;
     row.className = css_class;
@@ -1706,9 +1745,10 @@
 
     // threads
     if (this.env.threading) {
-      // This assumes that div width is hardcoded to 15px,
-      var width = message.depth * 15;
       if (message.depth) {
+        // This assumes that div width is hardcoded to 15px,
+        tree += '<span id="rcmtab' + uid + '" class="branch" style="width:' + (message.depth * 15) + 'px;">&nbsp;&nbsp;</span>';
+
         if ((rows[message.parent_uid] && rows[message.parent_uid].expanded === false)
           || ((this.env.autoexpand_threads == 0 || this.env.autoexpand_threads == 2) &&
             (!rows[message.parent_uid] || !rows[message.parent_uid].expanded))
@@ -1723,13 +1763,9 @@
         if (message.expanded === undefined && (this.env.autoexpand_threads == 1 || (this.env.autoexpand_threads == 2 && message.unread_children))) {
           message.expanded = true;
         }
-      }
 
-      if (width)
-        tree += '<span id="rcmtab' + uid + '" class="branch" style="width:' + width + 'px;">&nbsp;&nbsp;</span>';
-
-      if (message.has_children && !message.depth)
         expando = '<div id="rcmexpando' + uid + '" class="' + (message.expanded ? 'expanded' : 'collapsed') + '">&nbsp;&nbsp;</div>';
+      }
     }
 
     tree += '<span id="msgicn'+uid+'" class="'+css_class+'">&nbsp;</span>';
@@ -1743,7 +1779,7 @@
     }
 
     // add each submitted col
-    for (var n in this.env.coltypes) {
+    for (n in this.env.coltypes) {
       c = this.env.coltypes[n];
       col = document.createElement('td');
       col.className = String(c).toLowerCase();
@@ -1774,8 +1810,11 @@
       else if (c == 'threads')
         html = expando;
       else if (c == 'subject') {
-        if (bw.ie)
+        if (bw.ie) {
           col.onmouseover = function() { rcube_webmail.long_subject_title_ie(this, message.depth+1); };
+          if (bw.ie8)
+            tree = '<span></span>' + tree; // #1487821
+        }
         html = tree + cols[c];
       }
       else if (c == 'priority') {
@@ -1836,7 +1875,7 @@
       // make sure new columns are added at the end of the list
       var i, idx, name, newcols = [], oldcols = this.env.coltypes;
       for (i=0; i<oldcols.length; i++) {
-        name = oldcols[i] == 'to' ? 'from' : oldcols[i];
+        name = oldcols[i];
         idx = $.inArray(name, cols);
         if (idx != -1) {
           newcols.push(name);
@@ -1886,7 +1925,7 @@
 
       // mark as read and change mbox unread counter
       if (action == 'preview' && this.message_list && this.message_list.rows[id] && this.message_list.rows[id].unread && this.env.preview_pane_mark_read >= 0) {
-        this.preview_read_timer = window.setTimeout(function() {
+        this.preview_read_timer = setTimeout(function() {
           ref.set_message(id, 'unread', false);
           ref.update_thread_root(id, 'read');
           if (ref.env.unread_counts[ref.env.mailbox]) {
@@ -1947,18 +1986,13 @@
   // list messages of a specific mailbox using filter
   this.filter_mailbox = function(filter)
   {
-    var search, lock = this.set_busy(true, 'searching');
-
-    if (this.gui_objects.qsearchbox)
-      search = this.gui_objects.qsearchbox.value;
+    var lock = this.set_busy(true, 'searching');
 
     this.clear_message_list();
 
     // reset vars
     this.env.current_page = 1;
-    this.http_request('search', '_filter='+filter
-        + (search ? '&_q='+urlencode(search) : '')
-        + (this.env.mailbox ? '&_mbox='+urlencode(this.env.mailbox) : ''), lock);
+    this.http_request('search', this.search_params(false, filter), lock);
   };
 
   // list messages of a specific mailbox
@@ -1993,7 +2027,7 @@
     if (mbox != this.env.mailbox || (mbox == this.env.mailbox && !page && !sort))
       url += '&_refresh=1';
 
-    this.select_folder(mbox);
+    this.select_folder(mbox, '', true);
     this.env.mailbox = mbox;
 
     // load message list remotely
@@ -2924,12 +2958,14 @@
 
   this.init_address_input_events = function(obj, props)
   {
+    this.env.recipients_delimiter = this.env.recipients_separator + ' ';
+
     obj[bw.ie || bw.safari || bw.chrome ? 'keydown' : 'keypress'](function(e) { return ref.ksearch_keydown(e, this, props); })
       .attr('autocomplete', 'off');
   };
 
   // checks the input fields before sending a message
-  this.check_compose_input = function()
+  this.check_compose_input = function(cmd)
   {
     // check input fields
     var ed, input_to = $("[name='_to']"),
@@ -2964,15 +3000,28 @@
 
     // display localized warning for missing subject
     if (input_subject.val() == '') {
-      var subject = prompt(this.get_label('nosubjectwarning'), this.get_label('nosubject'));
+      var myprompt = $('<div class="prompt">').html('<div class="message">' + this.get_label('nosubjectwarning') + '</div>').appendTo(document.body);
+      var prompt_value = $('<input>').attr('type', 'text').attr('size', 30).appendTo(myprompt).val(this.get_label('nosubject'));
 
-      // user hit cancel, so don't send
-      if (!subject && subject !== '') {
+      var buttons = {};
+      buttons[this.get_label('cancel')] = function(){
         input_subject.focus();
-        return false;
-      }
-      else
-        input_subject.val((subject ? subject : this.get_label('nosubject')));
+        $(this).dialog('close');
+      };
+      buttons[this.get_label('sendmessage')] = function(){
+        input_subject.val(prompt_value.val());
+        $(this).dialog('close');
+        ref.command(cmd, { nocheck:true });  // repeat command which triggered this
+      };
+
+      myprompt.dialog({
+        modal: true,
+        resizable: false,
+        buttons: buttons,
+        close: function(event, ui) { $(this).remove() }
+      });
+      prompt_value.select();
+      return false;
     }
 
     // Apply spellcheck changes if spell checker is active
@@ -3043,7 +3092,7 @@
       if (!vis)
         this.stop_spellchecking();
 
-      $(this.env.spellcheck.spell_container).css('visibility', vis ? 'visible' : 'hidden');
+      $(this.env.spellcheck.spell_container)[vis ? 'show' : 'hide']();
     }
   };
 
@@ -3091,7 +3140,7 @@
   this.auto_save_start = function()
   {
     if (this.env.draft_autosave)
-      this.save_timer = self.setTimeout(function(){ ref.command("savedraft"); }, this.env.draft_autosave * 1000);
+      this.save_timer = setTimeout(function(){ ref.command("savedraft"); }, this.env.draft_autosave * 1000);
 
     // Unlock interface now that saving is complete
     this.busy = false;
@@ -3351,16 +3400,8 @@
 
   this.remove_from_attachment_list = function(name)
   {
-    if (this.env.attachments[name])
-      delete this.env.attachments[name];
-
-    if (!this.gui_objects.attachmentlist)
-      return false;
-
-    var list = this.gui_objects.attachmentlist.getElementsByTagName("li");
-    for (i=0; i<list.length; i++)
-      if (list[i].id == name)
-        this.gui_objects.attachmentlist.removeChild(list[i]);
+    delete this.env.attachments[name];
+    $('#'+name).remove();
   };
 
   this.remove_attachment = function(name)
@@ -3383,7 +3424,7 @@
 
   this.upload_progress_start = function(action, name)
   {
-    window.setTimeout(function() { rcmail.http_request(action, {_progress: name}); },
+    setTimeout(function() { rcmail.http_request(action, {_progress: name}); },
       this.env.upload_progress_time * 1000);
   };
 
@@ -3413,38 +3454,56 @@
   this.qsearch = function(value)
   {
     if (value != '') {
-      var n, r, addurl = '', mods_arr = [],
-        mods = this.env.search_mods,
-        mbox = this.env.mailbox,
-        lock = this.set_busy(true, 'searching');
+      var n, lock = this.set_busy(true, 'searching');
 
-      if (this.message_list) {
+      if (this.message_list)
         this.clear_message_list();
-        if (mods)
-          mods = mods[mbox] ? mods[mbox] : mods['*'];
-      } else if (this.contact_list) {
+      else if (this.contact_list)
         this.list_contacts_clear();
-      }
+
+      // reset vars
+      this.env.current_page = 1;
+      r = this.http_request('search', this.search_params(value)
+        + (this.env.source ? '&_source='+urlencode(this.env.source) : '')
+        + (this.env.group ? '&_gid='+urlencode(this.env.group) : ''), lock);
+
+      this.env.qsearch = {lock: lock, request: r};
+    }
+  };
+
+  // build URL params for search
+  this.search_params = function(search, filter)
+  {
+    var n, url = [], mods_arr = [],
+      mods = this.env.search_mods,
+      mbox = this.env.mailbox;
+
+    if (!filter && this.gui_objects.search_filter)
+      filter = this.gui_objects.search_filter.value;
+
+    if (!search && this.gui_objects.qsearchbox)
+      search = this.gui_objects.qsearchbox.value;
+
+    if (filter)
+      url.push('_filter=' + urlencode(filter));
+
+    if (search) {
+      url.push('_q='+urlencode(search));
+
+      if (mods && this.message_list)
+        mods = mods[mbox] ? mods[mbox] : mods['*'];
 
       if (mods) {
         for (n in mods)
           mods_arr.push(n);
-        addurl += '&_headers='+mods_arr.join(',');
+        url.push('_headers='+mods_arr.join(','));
       }
-
-      if (this.gui_objects.search_filter)
-        addurl += '&_filter=' + this.gui_objects.search_filter.value;
-
-      // reset vars
-      this.env.current_page = 1;
-      r = this.http_request('search', '_q='+urlencode(value)
-        + (mbox ? '&_mbox='+urlencode(mbox) : '')
-        + (this.env.source ? '&_source='+urlencode(this.env.source) : '')
-        + (this.env.group ? '&_gid='+urlencode(this.env.group) : '')
-        + (addurl ? addurl : ''), lock);
-
-      this.env.qsearch = {lock: lock, request: r};
     }
+
+    if (mbox)
+      url.push('_mbox='+urlencode(mbox));
+
+    return url.join('&');
   };
 
   // reset quick-search form
@@ -3465,7 +3524,7 @@
   {
     this.display_message(msg, type);
     // before redirect we need to wait some time for Chrome (#1486177)
-    window.setTimeout(function(){ ref.list_mailbox(); }, 500);
+    setTimeout(function(){ ref.list_mailbox(); }, 500);
   };
 
 
@@ -3484,9 +3543,9 @@
       mod = rcube_event.get_modifier(e);
 
     switch (key) {
-      case 38:  // key up
-      case 40:  // key down
-        if (!this.ksearch_pane)
+      case 38:  // arrow up
+      case 40:  // arrow down
+        if (!this.ksearch_visible())
           break;
 
         var dir = key==38 ? 1 : 0;
@@ -3523,11 +3582,11 @@
       case 37:  // left
       case 39:  // right
         if (mod != SHIFT_KEY)
-	      return;
+          return;
     }
 
     // start timer
-    this.ksearch_timer = window.setTimeout(function(){ ref.ksearch_get_results(props); }, 200);
+    this.ksearch_timer = setTimeout(function(){ ref.ksearch_get_results(props); }, 200);
     this.ksearch_input = obj;
 
     return true;
@@ -3570,13 +3629,13 @@
 
     // insert all members of a group
     if (typeof this.env.contacts[id] === 'object' && this.env.contacts[id].id) {
-      insert += this.env.contacts[id].name + ', ';
+      insert += this.env.contacts[id].name + this.env.recipients_delimiter;
       this.group2expand = $.extend({}, this.env.contacts[id]);
       this.group2expand.input = this.ksearch_input;
       this.http_request('mail/group-expand', '_source='+urlencode(this.env.contacts[id].source)+'&_gid='+urlencode(this.env.contacts[id].id), false);
     }
     else if (typeof this.env.contacts[id] === 'string') {
-      insert = this.env.contacts[id] + ', ';
+      insert = this.env.contacts[id] + this.env.recipients_delimiter;
       trigger = true;
     }
 
@@ -3613,7 +3672,7 @@
 
     // get string from current cursor pos to last comma
     var cpos = this.get_caret_pos(this.ksearch_input),
-      p = inp_value.lastIndexOf(',', cpos-1),
+      p = inp_value.lastIndexOf(this.env.recipients_separator, cpos-1),
       q = inp_value.substring(p+1, cpos),
       min = this.env.autocomplete_min_length,
       ac = this.ksearch_data;
@@ -3679,7 +3738,7 @@
       return;
 
     // display search results
-    var ul, li, text, init,
+    var i, len, ul, li, text, init,
       value = this.ksearch_value,
       data = this.ksearch_data,
       maxlen = this.env.autocomplete_max ? this.env.autocomplete_max : 15;
@@ -3710,8 +3769,8 @@
     }
 
     // add each result line to list
-    if (results && results.length) {
-      for (i=0; i < results.length && maxlen > 0; i++) {
+    if (results && (len = results.length)) {
+      for (i=0; i < len && maxlen > 0; i++) {
         text = typeof results[i] === 'object' ? results[i].name : results[i];
         li = document.createElement('LI');
         li.innerHTML = text.replace(new RegExp('('+RegExp.escape(value)+')', 'ig'), '##$1%%').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/##([^%]+)%%/g, '<b>$1</b>');
@@ -3732,7 +3791,7 @@
       }
     }
 
-    if (results && results.length)
+    if (len)
       this.env.contacts = this.env.contacts.concat(results);
 
     // run next parallel search
@@ -3835,7 +3894,7 @@
       source = this.env.source ? this.env.address_sources[this.env.source] : null;
 
     if (id = list.get_single_selection())
-      this.preview_timer = window.setTimeout(function(){ ref.load_contact(id, 'show'); }, 200);
+      this.preview_timer = setTimeout(function(){ ref.load_contact(id, 'show'); }, 200);
     else if (this.env.contentframe)
       this.show_contentframe(false);
 
@@ -3856,7 +3915,7 @@
       }
     }
 
-    this.enable_command('compose', list.selection.length > 0);
+    this.enable_command('compose', this.env.group || list.selection.length > 0);
     this.enable_command('edit', id && writable);
     this.enable_command('delete', list.selection.length && writable);
 
@@ -3942,7 +4001,8 @@
   {
     this.contact_list.clear(true);
     this.show_contentframe(false);
-    this.enable_command('delete', 'compose', false);
+    this.enable_command('delete', false);
+    this.enable_command('compose', this.env.group ? true : false);
   };
 
   // load contact record
@@ -4014,9 +4074,10 @@
 
   this.delete_contacts = function()
   {
+    var selection = this.contact_list.get_selection(),
+      undelete = this.env.source && this.env.address_sources[this.env.source].undelete;
+
     // exit if no mailbox specified or if selection is empty
-    var selection = this.contact_list.get_selection();
-    var undelete = this.env.address_sources[this.env.source].undelete;
     if (!(selection.length || this.env.cid) || (!undelete && !confirm(this.get_label('deletecontactconfirm'))))
       return;
 
@@ -4044,7 +4105,10 @@
       qs += '&_search='+this.env.search_request;
 
     // send request to server
-    this.http_post('delete', '_cid='+urlencode(a_cids.join(','))+'&_source='+urlencode(this.env.source)+'&_from='+(this.env.action ? this.env.action : '')+qs);
+    this.http_post('delete', '_cid='+urlencode(a_cids.join(','))
+      +'&_source='+urlencode(this.env.source)
+      +'&_from='+(this.env.action ? this.env.action : '')+qs,
+      this.display_message(this.get_label('contactdeleting'), 'loading'));
 
     return true;
   };
@@ -4054,7 +4118,7 @@
   {
     var c, row, list = this.contact_list;
 
-    cid = String(cid).replace(this.identifier_expr, '_');
+    cid = this.html_identifier(cid);
 
     // when in searching mode, concat cid with the source name
     if (!list.rows[cid]) {
@@ -4070,7 +4134,7 @@
 
       // cid change
       if (newcid) {
-        newcid = String(newcid).replace(this.identifier_expr, '_');
+        newcid = this.html_identifier(newcid);
         row.id = 'rcmrow' + newcid;
         list.remove_row(cid);
         list.init_row(row);
@@ -4083,31 +4147,29 @@
   // add row to contacts list
   this.add_contact_row = function(cid, cols, select)
   {
-    if (!this.gui_objects.contactslist || !this.gui_objects.contactslist.tBodies[0])
+    if (!this.gui_objects.contactslist)
       return false;
 
-    var tbody = this.gui_objects.contactslist.tBodies[0],
-      rowcount = tbody.rows.length,
-      even = rowcount%2,
+    var c, list = this.contact_list,
       row = document.createElement('tr');
 
-    row.id = 'rcmrow'+String(cid).replace(this.identifier_expr, '_');
-    row.className = 'contact '+(even ? 'even' : 'odd');
+    row.id = 'rcmrow'+this.html_identifier(cid);
+    row.className = 'contact';
 
-    if (this.contact_list.in_selection(cid))
+    if (list.in_selection(cid))
       row.className += ' selected';
 
     // add each submitted col
-    for (var c in cols) {
+    for (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);
+    list.insert_row(row);
 
-    this.enable_command('export', (this.contact_list.rowcount > 0));
+    this.enable_command('export', list.rowcount > 0);
   };
 
   this.init_contact_form = function()
@@ -4128,6 +4190,21 @@
       ref.insert_edit_field($(this).val(), $(this).attr('rel'), this);
       this.selectedIndex = 0;
     });
+
+    // enable date pickers on date fields
+    if ($.datepicker && this.env.date_format) {
+      $.datepicker.setDefaults({
+        dateFormat: this.env.date_format,
+        changeMonth: true,
+        changeYear: true,
+        yearRange: '-100:+10',
+        showOtherMonths: true,
+        selectOtherMonths: true,
+        monthNamesShort: this.env.month_names,
+        onSelect: function(dateText) { $(this).focus().val(dateText) }
+      });
+      $('input.datepicker').datepicker();
+    }
 
     $("input[type='text']:visible").first().focus();
   };
@@ -4258,7 +4335,7 @@
         .attr('rel', prop.source+':'+prop.id)
         .click(function() { return rcmail.command('listgroup', prop, this); })
         .html(prop.name),
-      li = $('<li>').attr({id: 'rcmli'+key.replace(this.identifier_expr, '_'), 'class': 'contactgroup'})
+      li = $('<li>').attr({id: 'rcmli'+this.html_identifier(key), 'class': 'contactgroup'})
         .append(link);
 
     this.env.contactfolders[key] = this.env.contactgroups[key] = prop;
@@ -4281,7 +4358,7 @@
       var newkey = 'G'+prop.source+prop.newid,
         newprop = $.extend({}, prop);;
 
-      li.id = String('rcmli'+newkey).replace(this.identifier_expr, '_');
+      li.id = 'rcmli' + this.html_identifier(newkey);
       this.env.contactfolders[newkey] = this.env.contactfolders[key];
       this.env.contactfolders[newkey].id = prop.newid;
       this.env.group = prop.newid;
@@ -4313,7 +4390,7 @@
   {
     var row, name = prop.name.toUpperCase(),
       sibling = this.get_folder_li(prop.source),
-      prefix = 'rcmliG'+(prop.source).replace(this.identifier_expr, '_');
+      prefix = 'rcmliG' + this.html_identifier(prop.source);
 
     // When renaming groups, we need to remove it from DOM and insert it in the proper place
     if (reloc) {
@@ -4384,6 +4461,9 @@
             .appendTo(cell);
 
           this.init_edit_field(col, input);
+
+          if (colprop.type == 'date' && $.datepicker)
+            input.datepicker();
         }
         else if (colprop.type == 'composite') {
           var childcol, cp, first, templ, cols = [], suffices = [];
@@ -4543,7 +4623,7 @@
         .attr('rel', id)
         .click(function() { return rcmail.command('listsearch', id, this); })
         .html(name),
-      li = $('<li>').attr({id: 'rcmli'+key.replace(this.identifier_expr, '_'), 'class': 'contactsearch'})
+      li = $('<li>').attr({id: 'rcmli' + this.html_identifier(key), 'class': 'contactsearch'})
         .append(link),
       prop = {name:name, id:id, li:li[0]};
 
@@ -5114,17 +5194,18 @@
         init_button(cmd, this.buttons[cmd][i]);
       }
     }
+
+    // set active task button
+    this.set_button(this.task, 'sel');
   };
 
   // set button to a specific state
   this.set_button = function(command, state)
   {
-    var button, obj, a_buttons = this.buttons[command];
+    var n, button, obj, a_buttons = this.buttons[command],
+      len = a_buttons ? a_buttons.length : 0;
 
-    if (!a_buttons || !a_buttons.length)
-      return false;
-
-    for (var n=0; n<a_buttons.length; n++) {
+    for (n=0; n<len; n++) {
       button = a_buttons[n];
       obj = document.getElementById(button.id);
 
@@ -5159,15 +5240,14 @@
   // display a specific alttext
   this.set_alttext = function(command, label)
   {
-    if (!this.buttons[command] || !this.buttons[command].length)
-      return;
+    var n, button, obj, link, a_buttons = this.buttons[command],
+      len = a_buttons ? a_buttons.length : 0;
 
-    var button, obj, link;
-    for (var n=0; n<this.buttons[command].length; n++) {
-      button = this.buttons[command][n];
+    for (n=0; n<len; n++) {
+      button = a_buttons[n];
       obj = document.getElementById(button.id);
 
-      if (button.type=='image' && obj) {
+      if (button.type == 'image' && obj) {
         obj.setAttribute('alt', this.get_label(label));
         if ((link = obj.parentNode) && link.tagName.toLowerCase() == 'a')
           link.setAttribute('title', this.get_label(label));
@@ -5180,20 +5260,18 @@
   // mouse over button
   this.button_over = function(command, id)
   {
-    var button, elm, a_buttons = this.buttons[command];
+    var n, button, obj, a_buttons = this.buttons[command],
+      len = a_buttons ? a_buttons.length : 0;
 
-    if (!a_buttons || !a_buttons.length)
-      return false;
-
-    for (var n=0; n<a_buttons.length; n++) {
+    for (n=0; n<len; n++) {
       button = a_buttons[n];
       if (button.id == id && button.status == 'act') {
-        elm = document.getElementById(button.id);
-        if (elm && button.over) {
+        obj = document.getElementById(button.id);
+        if (obj && button.over) {
           if (button.type == 'image')
-            elm.src = button.over;
+            obj.src = button.over;
           else
-            elm.className = button.over;
+            obj.className = button.over;
         }
       }
     }
@@ -5202,20 +5280,18 @@
   // mouse down on button
   this.button_sel = function(command, id)
   {
-    var button, elm, a_buttons = this.buttons[command];
+    var n, button, obj, a_buttons = this.buttons[command],
+      len = a_buttons ? a_buttons.length : 0;
 
-    if (!a_buttons || !a_buttons.length)
-      return;
-
-    for (var n=0; n<a_buttons.length; n++) {
+    for (n=0; n<len; n++) {
       button = a_buttons[n];
       if (button.id == id && button.status == 'act') {
-        elm = document.getElementById(button.id);
-        if (elm && button.sel) {
+        obj = document.getElementById(button.id);
+        if (obj && button.sel) {
           if (button.type == 'image')
-            elm.src = button.sel;
+            obj.src = button.sel;
           else
-            elm.className = button.sel;
+            obj.className = button.sel;
         }
         this.buttons_sel[id] = command;
       }
@@ -5225,25 +5301,22 @@
   // mouse out of button
   this.button_out = function(command, id)
   {
-    var button, elm, a_buttons = this.buttons[command];
+    var n, button, obj, a_buttons = this.buttons[command],
+      len = a_buttons ? a_buttons.length : 0;
 
-    if (!a_buttons || !a_buttons.length)
-      return;
-
-    for (var n=0; n<a_buttons.length; n++) {
+    for (n=0; n<len; n++) {
       button = a_buttons[n];
       if (button.id == id && button.status == 'act') {
-        elm = document.getElementById(button.id);
-        if (elm && button.act) {
+        obj = document.getElementById(button.id);
+        if (obj && button.act) {
           if (button.type == 'image')
-            elm.src = button.act;
+            obj.src = button.act;
           else
-            elm.className = button.act;
+            obj.className = button.act;
         }
       }
     }
   };
-
 
   this.focus_textfield = function(elem)
   {
@@ -5278,14 +5351,14 @@
     if (!this.gui_objects.message) {
       // save message in order to display after page loaded
       if (type != 'loading')
-        this.pending_message = new Array(msg, type, timeout);
+        this.pending_message = [msg, type, timeout];
       return false;
     }
 
     type = type ? type : 'notice';
 
     var ref = this,
-      key = String(msg).replace(this.identifier_expr, '_'),
+      key = this.html_identifier(msg),
       date = new Date(),
       id = type + date.getTime();
 
@@ -5310,7 +5383,7 @@
       }
       // add element and set timeout
       this.messages[key].elements.push(id);
-      window.setTimeout(function() { ref.hide_message(id, type == 'loading'); }, timeout);
+      setTimeout(function() { ref.hide_message(id, type == 'loading'); }, timeout);
       return id;
     }
 
@@ -5328,7 +5401,7 @@
     }
 
     if (timeout > 0)
-      window.setTimeout(function() { ref.hide_message(id, type == 'loading'); }, timeout);
+      setTimeout(function() { ref.hide_message(id, type == 'loading'); }, timeout);
     return id;
   };
 
@@ -5378,7 +5451,7 @@
   };
 
   // mark a mailbox as selected and set environment variable
-  this.select_folder = function(name, prefix)
+  this.select_folder = function(name, prefix, encode)
   {
     if (this.gui_objects.folderlist) {
       var current_li, target_li;
@@ -5386,7 +5459,7 @@
       if ((current_li = $('li.selected', this.gui_objects.folderlist))) {
         current_li.removeClass('selected').addClass('unfocused');
       }
-      if ((target_li = this.get_folder_li(name, prefix))) {
+      if ((target_li = this.get_folder_li(name, prefix, encode))) {
         $(target_li).removeClass('unfocused').addClass('selected');
       }
 
@@ -5396,13 +5469,13 @@
   };
 
   // helper method to find a folder list item
-  this.get_folder_li = function(name, prefix)
+  this.get_folder_li = function(name, prefix, encode)
   {
     if (!prefix)
       prefix = 'rcmli';
 
     if (this.gui_objects.folderlist) {
-      name = String(name).replace(this.identifier_expr, '_');
+      name = this.html_identifier(name, encode);
       return document.getElementById(prefix+name);
     }
 
@@ -5411,7 +5484,7 @@
 
   // for reordering column array (Konqueror workaround)
   // and for setting some message list global variables
-  this.set_message_coltypes = function(coltypes, repl)
+  this.set_message_coltypes = function(coltypes, repl, smart_col)
   {
     var list = this.message_list,
       thead = list ? list.list.tHead : null,
@@ -5439,7 +5512,7 @@
 
       for (n=0, len=this.env.coltypes.length; n<len; n++) {
         col = this.env.coltypes[n];
-        if ((cell = thead.rows[0].cells[n]) && (col=='from' || col=='to')) {
+        if ((cell = thead.rows[0].cells[n]) && (col == 'from' || col == 'to' || col == 'fromto')) {
           cell.id = 'rcm'+col;
           // if we have links for sorting, it's a bit more complicated...
           if (cell.firstChild && cell.firstChild.tagName.toLowerCase()=='a') {
@@ -5447,7 +5520,7 @@
             cell.onclick = function(){ return rcmail.command('sort', this.__col, this); };
             cell.__col = col;
           }
-          cell.innerHTML = this.get_label(col);
+          cell.innerHTML = this.get_label(col == 'fromto' ? smart_col : col);
         }
       }
     }
@@ -5516,7 +5589,7 @@
   {
     var reg, link, text_obj, item, mycount, childcount, div;
 
-    if (item = this.get_folder_li(mbox)) {
+    if (item = this.get_folder_li(mbox, '', true)) {
       mycount = this.env.unread_counts[mbox] ? this.env.unread_counts[mbox] : 0;
       link = $(item).children('a').eq(0);
       text_obj = link.children('span.unreadcount');
@@ -5528,7 +5601,7 @@
       if ((div = item.getElementsByTagName('div')[0]) &&
           div.className.match(/collapsed/)) {
         // add children's counters
-        for (var k in this.env.unread_counts) 
+        for (var k in this.env.unread_counts)
           if (k.indexOf(mbox + this.env.delimiter) == 0)
             childcount += this.env.unread_counts[k];
       }
@@ -5569,16 +5642,12 @@
 
   this.toggle_prefer_html = function(checkbox)
   {
-    var elem;
-    if (elem = document.getElementById('rcmfd_addrbook_show_images'))
-      elem.disabled = !checkbox.checked;
+    $('#rcmfd_show_images').prop('disabled', !checkbox.checked).val(0);
   };
 
   this.toggle_preview_pane = function(checkbox)
   {
-    var elem;
-    if (elem = document.getElementById('rcmfd_preview_pane_mark_read'))
-      elem.disabled = !checkbox.checked;
+    $('#rcmfd_preview_pane_mark_read').prop('disabled', !checkbox.checked);
   };
 
   // display fetched raw headers
@@ -5694,14 +5763,17 @@
 
     $.ajax({ type: 'POST', url: url, data: htmlText, contentType: 'application/octet-stream',
       error: function(o, status, err) { rcmail.http_error(o, status, err, lock); },
-      success: function(data) { rcmail.set_busy(false, null, lock); $(document.getElementById(id)).val(data); rcmail.log(data); }
+      success: function(data) { rcmail.set_busy(false, null, lock); $('#'+id).val(data); rcmail.log(data); }
     });
   };
 
-  this.plain2html = function(plainText, id)
+  this.plain2html = function(plain, id)
   {
     var lock = this.set_busy(true, 'converting');
-    $(document.getElementById(id)).val('<pre>'+plainText+'</pre>');
+
+    plain = plain.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
+    $('#'+id).val(plain ? '<pre>'+plain+'</pre>' : '');
+
     this.set_busy(false, null, lock);
   };
 

--
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