From 99cdca46b7bcc46fe6affd9e9f9f60a546b2e5b8 Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Thu, 05 Jun 2014 03:18:07 -0400
Subject: [PATCH] Merge branch 'dev-accessibility'

---
 program/js/app.js | 1434 +++++++++++++++++++++++++++++++----------------------------
 1 files changed, 753 insertions(+), 681 deletions(-)

diff --git a/program/js/app.js b/program/js/app.js
index f0aadd9..d12dd81 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -46,6 +46,7 @@
   this.messages = {};
   this.group2expand = {};
   this.http_request_jobs = {};
+  this.menu_stack = new Array();
 
   // webmail client settings
   this.dblclick_time = 500;
@@ -77,7 +78,7 @@
   });
 
   // unload fix
-  $(window).bind('beforeunload', function() { rcmail.unload = true; });
+  $(window).bind('beforeunload', function() { ref.unload = true; });
 
   // set environment variable(s)
   this.set_env = function(p, value)
@@ -197,7 +198,7 @@
 
     // enable general commands
     this.enable_command('close', 'logout', 'mail', 'addressbook', 'settings', 'save-pref',
-      'compose', 'undo', 'about', 'switch-task', 'menu-open', 'menu-save', true);
+      'compose', 'undo', 'about', 'switch-task', 'menu-open', 'menu-close', 'menu-save', true);
 
     // set active task button
     this.set_button(this.task, 'sel');
@@ -235,7 +236,6 @@
             return ref.command('sort', $(this).attr('rel'), this);
           });
 
-          document.onmouseup = function(e){ return ref.doc_mouse_up(e); };
           this.gui_objects.messagelist.parentNode.onclick = function(e){ return ref.click_on_list(e || window.event); };
 
           this.enable_command('toggle_status', 'toggle_flag', 'sort', true);
@@ -244,7 +244,7 @@
           // load messages
           this.command('list');
 
-          $(this.gui_objects.qsearchbox).val(this.env.search_text).focusin(function() { rcmail.message_list.blur(); });
+          $(this.gui_objects.qsearchbox).val(this.env.search_text).focusin(function() { ref.message_list.blur(); });
         }
 
         this.set_button_titles();
@@ -279,7 +279,7 @@
           this.env.address_group_stack = [];
           this.env.compose_commands = ['send-attachment', 'remove-attachment', 'send', 'cancel',
             'toggle-editor', 'list-adresses', 'pushgroup', 'search', 'reset-search', 'extwin',
-            'insert-response', 'save-response'];
+            'insert-response', 'save-response', 'menu-open', 'menu-close'];
 
           if (this.env.drafts_mailbox)
             this.env.compose_commands.push('savedraft')
@@ -289,21 +289,28 @@
           // add more commands (not enabled)
           $.merge(this.env.compose_commands, ['add-recipient', 'firstpage', 'previouspage', 'nextpage', 'lastpage']);
 
-          if (this.env.spellcheck) {
-            this.env.spellcheck.spelling_state_observer = function(s) { ref.spellcheck_state(); };
+          if (window.googie) {
+            this.env.editor_config.spellchecker = googie;
+            this.env.editor_config.spellcheck_observer = function(s) { ref.spellcheck_state(); };
+
             this.env.compose_commands.push('spellcheck')
             this.enable_command('spellcheck', true);
           }
+
+          // initialize HTML editor
+          this.editor_init(this.env.editor_config, this.env.composebody);
 
           // init canned response functions
           if (this.gui_objects.responseslist) {
             $('a.insertresponse', this.gui_objects.responseslist)
               .attr('unselectable', 'on')
               .mousedown(function(e){ return rcube_event.cancel(e); })
-              .mouseup(function(e){
-                ref.command('insert-response', $(this).attr('rel'));
-                $(document.body).trigger('mouseup');  // hides the menu
-                return rcube_event.cancel(e);
+              .bind('mouseup keypress', function(e){
+                if (e.type == 'mouseup' || rcube_event.get_keycode(e) == 13) {
+                  ref.command('insert-response', $(this).attr('rel'));
+                  $(document.body).trigger('mouseup');  // hides the menu
+                  return rcube_event.cancel(e);
+                }
               });
 
             // avoid textarea loosing focus when hitting the save-response button/link
@@ -311,8 +318,6 @@
               $('#'+this.buttons['save-response'][i].id).mousedown(function(e){ return rcube_event.cancel(e); })
             }
           }
-
-          document.onmouseup = function(e){ return ref.doc_mouse_up(e); };
 
           // init message compose form
           this.init_messageform();
@@ -337,11 +342,21 @@
         // init address book widget
         if (this.gui_objects.contactslist) {
           this.contact_list = new rcube_list_widget(this.gui_objects.contactslist,
-            { multiselect:true, draggable:false, keyboard:false });
+            { multiselect:true, draggable:false, keyboard:true });
           this.contact_list
             .addEventListener('initrow', function(o) { ref.triggerEvent('insertrow', { cid:o.uid, row:o }); })
             .addEventListener('select', function(o) { ref.compose_recipient_select(o); })
             .addEventListener('dblclick', function(o) { ref.compose_add_recipient('to'); })
+            .addEventListener('keypress', function(o) {
+              if (o.key_pressed == o.ENTER_KEY) {
+                if (!ref.compose_add_recipient('to')) {
+                  // execute link action on <enter> if not a recipient entry
+                  if (o.last_selected && String(o.last_selected).charAt(0) == 'G') {
+                    $(o.rows[o.last_selected].obj).find('a').first().click();
+                  }
+                }
+              }
+            })
             .init();
         }
 
@@ -392,7 +407,6 @@
             this.contact_list.highlight_row(this.env.cid);
 
           this.gui_objects.contactslist.parentNode.onmousedown = function(e){ return ref.click_on_list(e); };
-          document.onmouseup = function(e){ return ref.doc_mouse_up(e); };
 
           $(this.gui_objects.qsearchbox).focusin(function() { ref.contact_list.blur(); });
 
@@ -429,6 +443,9 @@
         else if (this.env.action == 'edit-identity' || this.env.action == 'add-identity') {
           this.enable_command('save', 'edit', 'toggle-editor', true);
           this.enable_command('delete', this.env.identities_level < 2);
+
+          // initialize HTML editor
+          this.editor_init(this.env.editor_config, 'rcmfd_signature');
         }
         else if (this.env.action == 'folders') {
           this.enable_command('subscribe', 'unsubscribe', 'create-folder', 'rename-folder', true);
@@ -444,9 +461,14 @@
 
         if (this.gui_objects.identitieslist) {
           this.identity_list = new rcube_list_widget(this.gui_objects.identitieslist,
-            {multiselect:false, draggable:false, keyboard:false});
+            {multiselect:false, draggable:false, keyboard:true});
           this.identity_list
             .addEventListener('select', function(o) { ref.identity_select(o); })
+            .addEventListener('keypress', function(o) {
+              if (o.key_pressed == o.ENTER_KEY) {
+                ref.identity_select(o);
+              }
+            })
             .init()
             .focus();
 
@@ -454,9 +476,10 @@
             this.identity_list.highlight_row(this.env.iid);
         }
         else if (this.gui_objects.sectionslist) {
-          this.sections_list = new rcube_list_widget(this.gui_objects.sectionslist, {multiselect:false, draggable:false, keyboard:false});
+          this.sections_list = new rcube_list_widget(this.gui_objects.sectionslist, {multiselect:false, draggable:false, keyboard:true});
           this.sections_list
             .addEventListener('select', function(o) { ref.section_select(o); })
+            .addEventListener('keypress', function(o) { if (o.key_pressed == o.ENTER_KEY) ref.section_select(o); })
             .init()
             .focus();
         }
@@ -464,7 +487,7 @@
           this.init_subscription_list();
         }
         else if (this.gui_objects.responseslist) {
-          this.responses_list = new rcube_list_widget(this.gui_objects.responseslist, {multiselect:false, draggable:false, keyboard:false});
+          this.responses_list = new rcube_list_widget(this.gui_objects.responseslist, {multiselect:false, draggable:false, keyboard:true});
           this.responses_list
             .addEventListener('select', function(list) {
               var win, id = list.get_single_selection();
@@ -482,7 +505,7 @@
 
       case 'login':
         var input_user = $('#rcmloginuser');
-        input_user.bind('keyup', function(e){ return rcmail.login_user_keyup(e); });
+        input_user.bind('keyup', function(e){ return ref.login_user_keyup(e); });
 
         if (input_user.val() == '')
           input_user.focus();
@@ -502,8 +525,8 @@
         // display 'loading' message on form submit, lock submit button
         $('form').submit(function () {
           $('input[type=submit]', this).prop('disabled', true);
-          rcmail.clear_messages();
-          rcmail.display_message('', 'loading');
+          ref.clear_messages();
+          ref.display_message('', 'loading');
         });
 
         this.enable_command('login', true);
@@ -531,23 +554,19 @@
     if (this.pending_message)
       this.display_message(this.pending_message[0], this.pending_message[1], this.pending_message[2]);
 
-    // map implicit containers
-    if (this.gui_objects.folderlist) {
-      this.gui_containers.foldertray = $(this.gui_objects.folderlist);
-
-      // init treelist widget
-      if (window.rcube_treelist_widget) {
-        this.treelist = new rcube_treelist_widget(this.gui_objects.folderlist, {
+    // init treelist widget
+    if (this.gui_objects.folderlist && window.rcube_treelist_widget) {
+      this.treelist = new rcube_treelist_widget(this.gui_objects.folderlist, {
           id_prefix: 'rcmli',
           id_encode: this.html_identifier_encode,
           id_decode: this.html_identifier_decode,
           check_droptarget: function(node) { return !node.virtual && ref.check_droptarget(node.id) }
-        });
-        this.treelist
-          .addEventListener('collapse', function(node) { ref.folder_collapsed(node) })
-          .addEventListener('expand', function(node) { ref.folder_collapsed(node) })
-          .addEventListener('select', function(node) { ref.triggerEvent('selectfolder', { folder:node.id, prefix:'rcmli' }) });
-      }
+      });
+
+      this.treelist
+        .addEventListener('collapse', function(node) { ref.folder_collapsed(node) })
+        .addEventListener('expand', function(node) { ref.folder_collapsed(node) })
+        .addEventListener('select', function(node) { ref.triggerEvent('selectfolder', { folder:node.id, prefix:'rcmli' }) });
     }
 
     // activate html5 file drop feature (if browser supports it and if configured)
@@ -558,17 +577,29 @@
         .get(0).addEventListener('drop', function(e){ return ref.file_dropped(e); }, false);
     }
 
+    // catch document (and iframe) mouse clicks
+    var body_mouseup = function(e){ return ref.doc_mouse_up(e); };
+    $(document.body)
+      .bind('mouseup', body_mouseup)
+      .bind('keydown', function(e){ return ref.doc_keypress(e); });
+
+    $('iframe').load(function(e) {
+        try { $(this.contentDocument || this.contentWindow).on('mouseup', body_mouseup);  }
+        catch (e) {/* catch possible "Permission denied" error in IE */ }
+      })
+      .contents().on('mouseup', body_mouseup);
+
     // trigger init event hook
     this.triggerEvent('init', { task:this.task, action:this.env.action });
 
     // execute all foreign onload scripts
     // @deprecated
-    for (var i in this.onloads) {
-      if (typeof this.onloads[i] === 'string')
-        eval(this.onloads[i]);
-      else if (typeof this.onloads[i] === 'function')
-        this.onloads[i]();
-      }
+    for (n in this.onloads) {
+      if (typeof this.onloads[n] === 'string')
+        eval(this.onloads[n]);
+      else if (typeof this.onloads[n] === 'function')
+        this.onloads[n]();
+    }
 
     // start keep-alive and refresh intervals
     this.start_refresh();
@@ -590,7 +621,7 @@
   {
     var ret, uid, cid, url, flag, aborted = false;
 
-    if (obj && obj.blur)
+    if (obj && obj.blur && !(event || rcube_event.is_keyboard(event)))
       obj.blur();
 
     // do nothing if interface is locked by other command (with exception for searching reset)
@@ -633,8 +664,8 @@
     }
 
     // trigger plugin hooks
-    this.triggerEvent('actionbefore', {props:props, action:command});
-    ret = this.triggerEvent('before'+command, props);
+    this.triggerEvent('actionbefore', {props:props, action:command, originalEvent:event});
+    ret = this.triggerEvent('before'+command, props || event);
     if (ret !== undefined) {
       // abort if one of the handlers returned false
       if (ret === false)
@@ -684,9 +715,6 @@
             form.target = win.name;
             form.submit();
           }
-          else {
-            // this.display_message(this.get_label('windowopenerror'), 'error');
-          }
         }
         else {
           this.open_window(this.env.permaurl, true);
@@ -709,9 +737,15 @@
           var mimetype = this.env.attachments[props.id];
           this.enable_command('open-attachment', mimetype && this.env.mimetypes && $.inArray(mimetype, this.env.mimetypes) >= 0);
         }
+        this.show_menu(props, props.show || undefined, event);
+        break;
+
+      case 'menu-close':
+        this.hide_menu(props, event);
+        break;
 
       case 'menu-save':
-        this.triggerEvent(command, {props:props});
+        this.triggerEvent(command, {props:props, originalEvent:event});
         return false;
 
       case 'open':
@@ -727,19 +761,12 @@
         break;
 
       case 'list':
-        // re-send search query for the selected folder
-        if (props && props != '' && this.env.search_request && this.gui_objects.qsearchbox.value) {
-          var oldmbox = this.env.search_scope == 'all' ? '*' : this.env.mailbox;
-          this.env.search_mods[props] = this.env.search_mods[oldmbox];  // copy search mods from active search
-          this.env.mailbox = props;
-          this.env.search_scope = 'sub';
-          this.qsearch(this.gui_objects.qsearchbox.value);
-          this.select_folder(this.env.mailbox, '', true);
-          break;
+        if (props && props != '') {
+          this.reset_qsearch();
         }
-
-        if (this.env.action == 'compose' && this.env.extwin)
+        if (this.env.action == 'compose' && this.env.extwin) {
           window.close();
+        }
         else if (this.task == 'mail') {
           this.list_mailbox(props);
           this.set_button_titles();
@@ -896,14 +923,14 @@
       case 'move':
       case 'moveto': // deprecated
         if (this.task == 'mail')
-          this.move_messages(props, obj);
+          this.move_messages(props, event);
         else if (this.task == 'addressbook')
           this.move_contacts(props);
         break;
 
       case 'copy':
         if (this.task == 'mail')
-          this.copy_messages(props, obj);
+          this.copy_messages(props, event);
         else if (this.task == 'addressbook')
           this.copy_contacts(props);
         break;
@@ -1054,17 +1081,11 @@
 
       case 'spellcheck':
         if (this.spellcheck_state()) {
-          this.stop_spellchecking();
+          this.editor.spellcheck_stop();
         }
         else {
-          if (window.tinyMCE && tinyMCE.get(this.env.composebody)) {
-            tinyMCE.execCommand('mceSpellCheck', true);
-          }
-          else if (this.env.spellcheck && this.env.spellcheck.spellCheck) {
-            this.env.spellcheck.spellCheck();
-          }
+          this.editor.spellcheck_start();
         }
-        this.spellcheck_state();
         break;
 
       case 'savedraft':
@@ -1146,8 +1167,8 @@
           this.gui_objects.messagepartframe.contentWindow.print();
         }
         else if (uid = this.get_single_uid()) {
-          ref.printwin = this.open_window(this.env.comm_path+'&_action=print&_uid='+uid+'&_mbox='+urlencode(this.get_message_mailbox(uid))+(this.env.safemode ? '&_safe=1' : ''), true, true);
-          if (this.printwin) {
+          url = '&_action=print&_uid='+uid+'&_mbox='+urlencode(this.get_message_mailbox(uid))+(this.env.safemode ? '&_safe=1' : '');
+          if (this.open_window(this.env.comm_path + url, true, true)) {
             if (this.env.action != 'show')
               this.mark_message('read', uid);
           }
@@ -1286,7 +1307,7 @@
       default:
         var func = command.replace(/-/g, '_');
         if (this[func] && typeof this[func] === 'function') {
-          ret = this[func](props, obj);
+          ret = this[func](props, obj, event);
         }
         break;
     }
@@ -1390,7 +1411,7 @@
     if (this.is_framed())
       parent.rcmail.reload(delay);
     else if (delay)
-      setTimeout(function(){ rcmail.reload(); }, delay);
+      setTimeout(function() { ref.reload(); }, delay);
     else if (window.location)
       location.href = this.env.comm_path + (this.env.action ? '&_action='+this.env.action : '');
   };
@@ -1465,7 +1486,8 @@
     if (menu && modkey == SHIFT_KEY && this.commands['copy']) {
       var pos = rcube_event.get_mouse_pos(e);
       this.env.drag_target = target;
-      $(menu).css({top: (pos.y-10)+'px', left: (pos.x-10)+'px'}).show();
+      this.show_menu(this.gui_objects.dragmenu.id, true, e);
+      $(menu).css({top: (pos.y-10)+'px', left: (pos.x-10)+'px'});
       return true;
     }
 
@@ -1581,17 +1603,22 @@
     }
   };
 
+  // global mouse-click handler to cleanup some UI elements
   this.doc_mouse_up = function(e)
   {
-    var list, id;
+    var list, id, target = rcube_event.get_target(e);
 
     // ignore event if jquery UI dialog is open
-    if ($(rcube_event.get_target(e)).closest('.ui-dialog, .ui-widget-overlay').length)
+    if ($(target).closest('.ui-dialog, .ui-widget-overlay').length)
       return;
 
-    list = this.message_list || this.contact_list;
-    if (list && !rcube_mouse_is_over(e, list.list.parentNode))
-      list.blur();
+    // remove focus from list widgets
+    if (window.rcube_list_widget && rcube_list_widget._instances.length) {
+      $.each(rcube_list_widget._instances, function(i,list){
+        if (list && !rcube_mouse_is_over(e, list.list.parentNode))
+          list.blur();
+      });
+    }
 
     // reset 'pressed' buttons
     if (this.buttons_sel) {
@@ -1600,7 +1627,77 @@
           this.button_out(this.buttons_sel[id], id);
       this.buttons_sel = {};
     }
+
+    // reset popup menus; delayed to have updated menu_stack data
+    window.setTimeout(function(e){
+      var obj, skip, config, id, i, parents = $(target).parents();
+      for (i = ref.menu_stack.length - 1; i >= 0; i--) {
+        id = ref.menu_stack[i];
+        obj = $('#' + id);
+
+        if (obj.is(':visible')
+          && target != obj.data('opener')
+          && target != obj.get(0)  // check if scroll bar was clicked (#1489832)
+          && !parents.is(obj.data('opener'))
+          && id != skip
+          && (obj.attr('data-editable') != 'true' || !$(target).parents('#' + id).length)
+          && (obj.attr('data-sticky') != 'true' || !rcube_mouse_is_over(e, obj.get(0)))
+        ) {
+          ref.hide_menu(id, e);
+        }
+        skip = obj.data('parent');
+      }
+    }, 10);
   };
+
+  // global keypress event handler
+  this.doc_keypress = function(e)
+  {
+    // Helper method to move focus to the next/prev active menu item
+    var focus_menu_item = function(dir) {
+      var obj, item, mod = dir < 0 ? 'prevAll' : 'nextAll', limit = dir < 0 ? 'last' : 'first';
+      if (ref.focused_menu && (obj = $('#'+ref.focused_menu))) {
+        item = obj.find(':focus').closest('li')[mod](':has(:not([aria-disabled=true]))').find('a,input')[limit]();
+        if (!item.length)
+          item = obj.find(':focus').closest('ul')[mod](':has(:not([aria-disabled=true]))').find('a,input')[limit]();
+        return item.focus().length;
+      }
+
+      return 0;
+    };
+
+    var target = e.target || {},
+      keyCode = rcube_event.get_keycode(e);
+
+    if (e.keyCode != 27 && (!this.menu_keyboard_active || target.nodeName == 'TEXTAREA' || target.nodeName == 'SELECT')) {
+      return true;
+    }
+
+    switch (keyCode) {
+      case 38:
+      case 40:
+      case 63232: // "up", in safari keypress
+      case 63233: // "down", in safari keypress
+        focus_menu_item(mod = keyCode == 38 || keyCode == 63232 ? -1 : 1);
+        break;
+
+      case 9:   // tab
+        if (this.focused_menu) {
+          var mod = rcube_event.get_modifier(e);
+          if (!focus_menu_item(mod == SHIFT_KEY ? -1 : 1)) {
+            this.hide_menu(this.focused_menu, e);
+          }
+        }
+        return rcube_event.cancel(e);
+
+      case 27:  // esc
+        if (this.menu_stack.length)
+          this.hide_menu(this.menu_stack[this.menu_stack.length-1], e);
+        break;
+    }
+
+    return true;
+  }
 
   this.click_on_list = function(e)
   {
@@ -1792,6 +1889,13 @@
           +(toolbar ? ',toolbar=yes,menubar=yes,status=yes' : ',toolbar=no,menubar=no,status=no'));
     }
 
+    // detect popup blocker (#1489618)
+    // don't care this might not work with all browsers
+    if (!extwin || extwin.closed) {
+      this.display_message(this.get_label('windowopenerror'), 'warning');
+      return;
+    }
+
     // write loading... message to empty windows
     if (!url && extwin.document) {
       extwin.document.write('<html><body>' + this.get_label('loading') + '</body></html>');
@@ -1801,7 +1905,7 @@
     this.triggerEvent('openwindow', { url:url, handle:extwin });
 
     // focus window, delayed to bring to front
-    window.setTimeout(function() { extwin && extwin.focus(); }, 10);
+    setTimeout(function() { extwin && extwin.focus(); }, 10);
 
     return extwin;
   };
@@ -1888,33 +1992,43 @@
       flags: flags.extra_flags
     });
 
-    var c, n, col, html, css_class,
+    var c, n, col, html, css_class, label, status_class = '', status_label = '',
       tree = '', expando = '',
       list = this.message_list,
       rows = list.rows,
       message = this.env.messages[uid],
+      msg_id = this.html_identifier(uid,true),
       row_class = 'message'
         + (!flags.seen ? ' unread' : '')
         + (flags.deleted ? ' deleted' : '')
         + (flags.flagged ? ' flagged' : '')
         + (message.selected ? ' selected' : ''),
-      row = { cols:[], style:{}, id:'rcmrow'+this.html_identifier(uid,true), uid:uid };
+      row = { cols:[], style:{}, id:'rcmrow'+msg_id, uid:uid };
 
     // message status icons
     css_class = 'msgicon';
     if (this.env.status_col === null) {
       css_class += ' status';
-      if (flags.deleted)
-        css_class += ' deleted';
-      else if (!flags.seen)
-        css_class += ' unread';
-      else if (flags.unread_children > 0)
-        css_class += ' unreadchildren';
+      if (flags.deleted) {
+        status_class += ' deleted';
+        status_label += this.get_label('deleted') + ' ';
+      }
+      else if (!flags.seen) {
+        status_class += ' unread';
+        status_label += this.get_label('unread') + ' ';
+      }
+      else if (flags.unread_children > 0) {
+        status_class += ' unreadchildren';
+      }
     }
-    if (flags.answered)
-      css_class += ' replied';
-    if (flags.forwarded)
-      css_class += ' forwarded';
+    if (flags.answered) {
+      status_class += ' replied';
+      status_label += this.get_label('replied') + ' ';
+    }
+    if (flags.forwarded) {
+      status_class += ' forwarded';
+      status_label += this.get_label('replied') + ' ';
+    }
 
     // update selection
     if (message.selected && !list.in_selection(uid))
@@ -1924,7 +2038,7 @@
     if (this.env.threading) {
       if (message.depth) {
         // This assumes that div width is hardcoded to 15px,
-        tree += '<span id="rcmtab' + row.id + '" class="branch" style="width:' + (message.depth * 15) + 'px;">&nbsp;&nbsp;</span>';
+        tree += '<span id="rcmtab' + msg_id + '" 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) &&
@@ -1951,7 +2065,7 @@
         row_class += ' unroot';
     }
 
-    tree += '<span id="msgicn'+row.id+'" class="'+css_class+'">&nbsp;</span>';
+    tree += '<span id="msgicn'+row.id+'" class="'+css_class+status_class+'" title="'+status_label+'"></span>';
     row.className = row_class;
 
     // build subject link
@@ -1975,28 +2089,36 @@
 
       if (c == 'flag') {
         css_class = (flags.flagged ? 'flagged' : 'unflagged');
-        html = '<span id="flagicn'+row.id+'" class="'+css_class+'">&nbsp;</span>';
+        label = this.get_label(css_class);
+        html = '<span id="flagicn'+row.id+'" class="'+css_class+'" title="'+label+'"></span>';
       }
       else if (c == 'attachment') {
+        label = this.get_label('withattachment');
         if (flags.attachmentClass)
-          html = '<span class="'+flags.attachmentClass+'">&nbsp;</span>';
+          html = '<span class="'+flags.attachmentClass+'" title="'+label+'"></span>';
         else if (/application\/|multipart\/(m|signed)/.test(flags.ctype))
-          html = '<span class="attachment">&nbsp;</span>';
+          html = '<span class="attachment" title="'+label+'"></span>';
         else if (/multipart\/report/.test(flags.ctype))
-          html = '<span class="report">&nbsp;</span>';
-        else
+          html = '<span class="report"></span>';
+          else
           html = '&nbsp;';
       }
       else if (c == 'status') {
-        if (flags.deleted)
+        label = '';
+        if (flags.deleted) {
           css_class = 'deleted';
-        else if (!flags.seen)
+          label = this.get_label('deleted');
+        }
+        else if (!flags.seen) {
           css_class = 'unread';
-        else if (flags.unread_children > 0)
+          label = this.get_label('unread');
+        }
+        else if (flags.unread_children > 0) {
           css_class = 'unreadchildren';
+        }
         else
           css_class = 'msgicon';
-        html = '<span id="statusicn'+row.id+'" class="'+css_class+'">&nbsp;</span>';
+        html = '<span id="statusicn'+row.id+'" class="'+css_class+status_class+'" title="'+label+'"></span>';
       }
       else if (c == 'threads')
         html = expando;
@@ -2006,8 +2128,10 @@
         html = tree + cols[c];
       }
       else if (c == 'priority') {
-        if (flags.prio > 0 && flags.prio < 6)
-          html = '<span class="prio'+flags.prio+'">&nbsp;</span>';
+        if (flags.prio > 0 && flags.prio < 6) {
+          label = this.get_label('priority') + ' ' + flags.prio;
+          html = '<span class="prio'+flags.prio+'" title="'+label+'"></span>';
+        }
         else
           html = '&nbsp;';
       }
@@ -2124,17 +2248,37 @@
         this.location_href(this.env.comm_path+url, target, true);
 
       // mark as read and change mbox unread counter
-      if (preview && this.message_list && this.message_list.rows[id] && this.message_list.rows[id].unread && this.env.preview_pane_mark_read >= 0) {
+      if (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 = setTimeout(function() {
-          ref.set_message(id, 'unread', false);
-          if (ref.env.unread_counts[ref.env.mailbox]) {
-            ref.env.unread_counts[ref.env.mailbox] -= 1;
-            ref.set_unread_count(ref.env.mailbox, ref.env.unread_counts[ref.env.mailbox], ref.env.mailbox == 'INBOX');
-          }
-          if (ref.env.preview_pane_mark_read > 0)
-            ref.http_post('mark', {_uid: id, _flag: 'read', _quiet: 1});
+          ref.set_unread_message(id, ref.env.mailbox);
+          ref.http_post('mark', {_uid: id, _flag: 'read', _quiet: 1});
         }, this.env.preview_pane_mark_read * 1000);
       }
+    }
+  };
+
+  // update message status and unread counter after marking a message as read
+  this.set_unread_message = function(id, folder)
+  {
+    var self = this;
+
+    // find window with messages list
+    if (!self.message_list)
+      self = self.opener();
+
+    if (!self && window.parent)
+      self = parent.rcmail;
+
+    if (!self || !self.message_list)
+      return;
+
+    // this may fail in multifolder mode
+    if (self.set_message(id, 'unread', false) === false)
+      self.set_message(id + '-' + folder, 'unread', false);
+
+    if (self.env.unread_counts[folder] > 0) {
+      self.env.unread_counts[folder] -= 1;
+      self.set_unread_count(folder, self.env.unread_counts[folder], folder == 'INBOX' && !self.is_multifolder_listing());
     }
   };
 
@@ -2297,7 +2441,6 @@
   this.clear_message_list = function()
   {
     this.env.messages = {};
-    this.last_selected = 0;
 
     this.show_contentframe(false);
     if (this.message_list)
@@ -2316,6 +2459,7 @@
       url._page = page;
 
     this.http_request('list', url, lock);
+    this.update_state({ _mbox: mbox, _page: (page && page > 1 ? page : null) });
   };
 
   // removes messages that doesn't exists from list selection array
@@ -2540,8 +2684,8 @@
             $('#'+r.id+' .leaf:first')
               .attr('id', 'rcmexpando' + r.id)
               .attr('class', (r.obj.style.display != 'none' ? 'expanded' : 'collapsed'))
-              .bind('mousedown', {uid:r.uid, p:this},
-                function(e) { return e.data.p.expand_message_row(e, e.data.uid); });
+              .bind('mousedown', {uid: r.uid},
+                function(e) { return ref.expand_message_row(e, e.data.uid); });
 
             r.unread_children = 0;
             roots.push(r);
@@ -2589,7 +2733,7 @@
   // set message icon
   this.set_message_icon = function(uid)
   {
-    var css_class,
+    var css_class, label = '',
       row = this.message_list.rows[uid];
 
     if (!row)
@@ -2597,38 +2741,55 @@
 
     if (row.icon) {
       css_class = 'msgicon';
-      if (row.deleted)
+      if (row.deleted) {
         css_class += ' deleted';
-      else if (row.unread)
+        label += this.get_label('deleted') + ' ';
+      }
+      else if (row.unread) {
         css_class += ' unread';
+        label += this.get_label('unread') + ' ';
+      }
       else if (row.unread_children)
         css_class += ' unreadchildren';
       if (row.msgicon == row.icon) {
-        if (row.replied)
+        if (row.replied) {
           css_class += ' replied';
-        if (row.forwarded)
+          label += this.get_label('replied') + ' ';
+        }
+        if (row.forwarded) {
           css_class += ' forwarded';
+          label += this.get_label('forwarded') + ' ';
+        }
         css_class += ' status';
       }
 
-      row.icon.className = css_class;
+      $(row.icon).attr('class', css_class).attr('title', label);
     }
 
     if (row.msgicon && row.msgicon != row.icon) {
+      label = '';
       css_class = 'msgicon';
-      if (!row.unread && row.unread_children)
+      if (!row.unread && row.unread_children) {
         css_class += ' unreadchildren';
-      if (row.replied)
+      }
+      if (row.replied) {
         css_class += ' replied';
-      if (row.forwarded)
+        label += this.get_label('replied') + ' ';
+      }
+      if (row.forwarded) {
         css_class += ' forwarded';
+        label += this.get_label('forwarded') + ' ';
+      }
 
-      row.msgicon.className = css_class;
+      $(row.msgicon).attr('class', css_class).attr('title', label);
     }
 
     if (row.flagicon) {
       css_class = (row.flagged ? 'flagged' : 'unflagged');
-      row.flagicon.className = css_class;
+      label = this.get_label(css_class);
+      $(row.flagicon).attr('class', css_class)
+        .attr('aria-label', label)
+        .attr('title', label);
     }
   };
 
@@ -2643,16 +2804,10 @@
     if (flag == 'unread') {
       if (row.unread != status)
         this.update_thread_root(uid, status ? 'unread' : 'read');
-      row.unread = status;
     }
-    else if(flag == 'deleted')
-      row.deleted = status;
-    else if (flag == 'replied')
-      row.replied = status;
-    else if (flag == 'forwarded')
-      row.forwarded = status;
-    else if (flag == 'flagged')
-      row.flagged = status;
+
+    if ($.inArray(flag, ['unread', 'deleted', 'replied', 'forwarded', 'flagged']) > -1)
+      row[flag] = status;
   };
 
   // set message row status, class and icon
@@ -2666,22 +2821,8 @@
     if (flag)
       this.set_message_status(uid, flag, status);
 
-    var rowobj = $(row.obj);
-
-    if (row.unread && !rowobj.hasClass('unread'))
-      rowobj.addClass('unread');
-    else if (!row.unread && rowobj.hasClass('unread'))
-      rowobj.removeClass('unread');
-
-    if (row.deleted && !rowobj.hasClass('deleted'))
-      rowobj.addClass('deleted');
-    else if (!row.deleted && rowobj.hasClass('deleted'))
-      rowobj.removeClass('deleted');
-
-    if (row.flagged && !rowobj.hasClass('flagged'))
-      rowobj.addClass('flagged');
-    else if (!row.flagged && rowobj.hasClass('flagged'))
-      rowobj.removeClass('flagged');
+    if ($.inArray(flag, ['unread', 'deleted', 'flagged']) > -1)
+      $(row.obj)[row[flag] ? 'addClass' : 'removeClass'](flag);
 
     this.set_unread_children(uid);
     this.set_message_icon(uid);
@@ -2702,12 +2843,12 @@
   };
 
   // copy selected messages to the specified mailbox
-  this.copy_messages = function(mbox, obj)
+  this.copy_messages = function(mbox, event)
   {
     if (mbox && typeof mbox === 'object')
       mbox = mbox.id;
     else if (!mbox)
-      return this.folder_selector(obj, function(folder) { ref.command('copy', folder); });
+      return this.folder_selector(event, function(folder) { ref.command('copy', folder); });
 
     // exit if current or no mailbox specified
     if (!mbox || mbox == this.env.mailbox)
@@ -2724,12 +2865,12 @@
   };
 
   // move selected messages to the specified mailbox
-  this.move_messages = function(mbox, obj)
+  this.move_messages = function(mbox, event)
   {
     if (mbox && typeof mbox === 'object')
       mbox = mbox.id;
     else if (!mbox)
-      return this.folder_selector(obj, function(folder) { ref.command('move', folder); });
+      return this.folder_selector(event, function(folder) { ref.command('move', folder); });
 
     // exit if current or no mailbox specified
     if (!mbox || (mbox == this.env.mailbox && !this.is_multifolder_listing()))
@@ -3026,12 +3167,12 @@
         this.message_list.clear_selection();
       if (count < 0)
         post_data._count = (count*-1);
-      else if (count > 0) 
+      else if (count > 0)
         // remove threads from the end of the list
         this.delete_excessive_thread_rows();
     }
 
-    // ??
+    // set of messages to mark as seen
     if (r_uids.length)
       post_data._ruid = this.uids_to_list(r_uids);
 
@@ -3045,11 +3186,11 @@
   // argument should be a coma-separated list of uids
   this.flag_deleted_as_read = function(uids)
   {
-    var icn_src, uid, i, len,
+    var uid, i, len,
       rows = this.message_list ? this.message_list.rows : {};
 
     if (typeof uids == 'string')
-      uids = String(uids).split(',');
+      uids = uids.split(',');
 
     for (i=0, len=uids.length; i<len; i++) {
       uid = uids[i];
@@ -3173,7 +3314,7 @@
     if (!this.gui_objects.messageform)
       return false;
 
-    var input_from = $("[name='_from']"),
+    var i, input_from = $("[name='_from']"),
       input_to = $("[name='_to']"),
       input_subject = $("input[name='_subject']"),
       input_message = $("[name='_message']").get(0),
@@ -3202,7 +3343,7 @@
 
     // init live search events
     this.init_address_input_events(input_to, ac_props);
-    for (var i in ac_fields) {
+    for (i in ac_fields) {
       this.init_address_input_events($("[name='_"+ac_fields[i]+"']"), ac_props);
     }
 
@@ -3217,10 +3358,11 @@
 
     // check for locally stored compose data
     if (window.localStorage) {
-      var index = this.local_storage_get_item('compose.index', []);
+      var key, formdata, index = this.local_storage_get_item('compose.index', []);
 
-      for (var key, i = 0; i < index.length; i++) {
-        key = index[i], formdata = this.local_storage_get_item('compose.' + key, null, true);
+      for (i = 0; i < index.length; i++) {
+        key = index[i];
+        formdata = this.local_storage_get_item('compose.' + key, null, true);
         if (!formdata) {
           continue;
         }
@@ -3294,7 +3436,7 @@
     this.env.recipients_delimiter = this.env.recipients_separator + ' ';
 
     obj.keydown(function(e) { return ref.ksearch_keydown(e, this, props); })
-      .attr('autocomplete', 'off');
+      .attr({ 'autocomplete': 'off', 'aria-autocomplete': 'list', 'aria-expanded': 'false', 'role': 'combobox' });
   };
 
   this.submit_messageform = function(draft)
@@ -3365,18 +3507,19 @@
       input.val(oldval + recipients.join(delim + ' ') + delim + ' ');
       this.triggerEvent('add-recipient', { field:field, recipients:recipients });
     }
+
+    return recipients.length;
   };
 
   // checks the input fields before sending a message
   this.check_compose_input = function(cmd)
   {
     // check input fields
-    var ed, input_to = $("[name='_to']"),
+    var input_to = $("[name='_to']"),
       input_cc = $("[name='_cc']"),
       input_bcc = $("[name='_bcc']"),
       input_from = $("[name='_from']"),
-      input_subject = $("[name='_subject']"),
-      input_message = $("[name='_message']");
+      input_subject = $("[name='_subject']");
 
     // check sender (if have no identities)
     if (input_from.prop('type') == 'text' && !rcube_check_email(input_from.val(), true)) {
@@ -3403,10 +3546,12 @@
 
     // display localized warning for missing subject
     if (input_subject.val() == '') {
-      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'));
+      var buttons = {},
+        myprompt = $('<div class="prompt">').html('<div class="message">' + this.get_label('nosubjectwarning') + '</div>')
+          .appendTo(document.body),
+        prompt_value = $('<input>').attr({type: 'text', size: 30}).val(this.get_label('nosubject'))
+          .appendTo(myprompt);
 
-      var buttons = {};
       buttons[this.get_label('cancel')] = function(){
         input_subject.focus();
         $(this).dialog('close');
@@ -3423,88 +3568,44 @@
         buttons: buttons,
         close: function(event, ui) { $(this).remove() }
       });
+
       prompt_value.select();
       return false;
     }
 
-    // Apply spellcheck changes if spell checker is active
-    this.stop_spellchecking();
-
-    if (window.tinyMCE)
-      ed = tinyMCE.get(this.env.composebody);
-
     // check for empty body
-    if (!ed && input_message.val() == '' && !confirm(this.get_label('nobodywarning'))) {
-      input_message.focus();
+    if (!this.editor.get_content() && !confirm(this.get_label('nobodywarning'))) {
+      this.editor.focus();
       return false;
     }
-    else if (ed) {
-      if (!ed.getContent() && !confirm(this.get_label('nobodywarning'))) {
-        ed.focus();
-        return false;
-      }
-      // move body from html editor to textarea (just to be sure, #1485860)
-      tinyMCE.triggerSave();
-    }
+
+    // move body from html editor to textarea (just to be sure, #1485860)
+    this.editor.save();
 
     return true;
   };
 
-  this.toggle_editor = function(props)
+  this.toggle_editor = function(props, obj, e)
   {
-    this.stop_spellchecking();
+    // @todo: this should work also with many editors on page
+    var result = this.editor.toggle(props.html);
 
-    if (props.mode == 'html') {
-      this.plain2html($('#'+props.id).val(), props.id);
-      tinyMCE.execCommand('mceAddControl', false, props.id);
-
-      if (this.env.default_font)
-        setTimeout(function() {
-          $(tinyMCE.get(props.id).getBody()).css('font-family', rcmail.env.default_font);
-        }, 500);
-    }
-    else {
-      var thisMCE = tinyMCE.get(props.id), existingHtml;
-
-      if (existingHtml = thisMCE.getContent()) {
-        if (!confirm(this.get_label('editorwarning'))) {
-          return false;
-        }
-        this.html2plain(existingHtml, props.id);
-      }
-      tinyMCE.execCommand('mceRemoveControl', false, props.id);
+    if (!result && e) {
+      // fix selector value if operation failed
+      $(e.target).filter('select').val(props.html ? 'plain' : 'html');
     }
 
-    return true;
+    return result;
   };
 
   this.insert_response = function(key)
   {
     var insert = this.env.textresponses[key] ? this.env.textresponses[key].text : null;
+
     if (!insert)
       return false;
 
-    // insert into tinyMCE editor
-    if ($("input[name='_is_html']").val() == '1') {
-      var editor = tinyMCE.get(this.env.composebody);
-      editor.getWin().focus(); // correct focus in IE & Chrome
-      editor.selection.setContent(this.quote_html(insert).replace(/\r?\n/g, '<br/>'), { format:'text' });
-    }
-    // replace selection in compose textarea
-    else {
-      var textarea = rcube_find_object(this.env.composebody),
-        selection = $(textarea).is(':focus') ? this.get_input_selection(textarea) : { start:0, end:0 },
-        inp_value = textarea.value;
-        pre = inp_value.substring(0, selection.start),
-        end = inp_value.substring(selection.end, inp_value.length);
-
-      // insert response text
-      textarea.value = pre + insert + end;
-
-      // set caret after inserted text
-      this.set_caret_pos(textarea, selection.start + insert.length);
-      textarea.focus();
-    }
+    this.editor.replace(insert);
   };
 
   /**
@@ -3512,42 +3613,8 @@
    */
   this.save_response = function()
   {
-    var sigstart, text = '', strip = false;
-
-    // get selected text from tinyMCE editor
-    if ($("input[name='_is_html']").val() == '1') {
-      var editor = tinyMCE.get(this.env.composebody);
-      editor.getWin().focus(); // correct focus in IE & Chrome
-      text = editor.selection.getContent({ format:'text' });
-
-      if (!text) {
-        text = editor.getContent({ format:'text' });
-        strip = true;
-      }
-    }
-    // get selected text from compose textarea
-    else {
-      var textarea = rcube_find_object(this.env.composebody), sigstart;
-      if (textarea && $(textarea).is(':focus')) {
-        text = this.get_input_selection(textarea).text;
-      }
-
-      if (!text && textarea) {
-        text = textarea.value;
-        strip = true;
-      }
-    }
-
-    // strip off signature
-    if (strip) {
-      sigstart = text.indexOf('-- \n');
-      if (sigstart > 0) {
-        text = text.substring(0, sigstart);
-      }
-    }
-
     // show dialog to enter a name and to modify the text to be saved
-    var buttons = {},
+    var buttons = {}, text = this.editor.get_content(true, true),
       html = '<form class="propform">' +
       '<div class="prop block"><label>' + this.get_label('responsename') + '</label>' +
       '<input type="text" name="name" id="ffresponsename" size="40" /></div>' +
@@ -3592,15 +3659,18 @@
       $('<a>').addClass('insertresponse active')
         .attr('href', '#')
         .attr('rel', key)
+        .attr('tabindex', '0')
         .html(this.quote_html(response.name))
         .appendTo(li)
         .mousedown(function(e){
           return rcube_event.cancel(e);
         })
-        .mouseup(function(e){
-          ref.command('insert-response', key);
-          $(document.body).trigger('mouseup');  // hides the menu
-          return rcube_event.cancel(e);
+        .bind('mouseup keypress', function(e){
+          if (e.type == 'mouseup' || rcube_event.get_keycode(e) == 13) {
+            ref.command('insert-response', $(this).attr('rel'));
+            $(document.body).trigger('mouseup');  // hides the menu
+            return rcube_event.cancel(e);
+          }
         });
     }
   };
@@ -3626,33 +3696,13 @@
     return false;
   };
 
-  this.stop_spellchecking = function()
-  {
-    var ed;
-
-    if (window.tinyMCE && (ed = tinyMCE.get(this.env.composebody))) {
-      if (ed.plugins && ed.plugins.spellchecker && ed.plugins.spellchecker.active)
-        ed.execCommand('mceSpellCheck');
-    }
-    else if (ed = this.env.spellcheck) {
-      if (ed.state && ed.state != 'ready' && ed.state != 'no_error_found')
-        $(ed.spell_span).trigger('click');
-    }
-
-    this.spellcheck_state();
-  };
-
+  // updates spellchecker buttons on state change
   this.spellcheck_state = function()
   {
-    var ed, active;
+    var active = this.editor.spellcheck_state();
 
-    if (window.tinyMCE && (ed = tinyMCE.get(this.env.composebody)) && ed.plugins && ed.plugins.spellchecker)
-      active = ed.plugins.spellchecker.active;
-    else if ((ed = this.env.spellcheck) && ed.state)
-      active = ed.state != 'ready' && ed.state != 'no_error_found';
-
-    if (rcmail.buttons.spellcheck)
-      $('#'+rcmail.buttons.spellcheck[0].id)[active ? 'addClass' : 'removeClass']('selected');
+    if (this.buttons.spellcheck)
+      $('#'+this.buttons.spellcheck[0].id)[active ? 'addClass' : 'removeClass']('selected');
 
     return active;
   };
@@ -3660,43 +3710,19 @@
   // get selected language
   this.spellcheck_lang = function()
   {
-    var ed;
-
-    if (window.tinyMCE && (ed = tinyMCE.get(this.env.composebody)) && ed.plugins && ed.plugins.spellchecker)
-      return ed.plugins.spellchecker.selectedLang;
-    else if (this.env.spellcheck)
-      return GOOGIE_CUR_LANG;
+    return this.editor.get_language();
   };
 
   this.spellcheck_lang_set = function(lang)
   {
-    var ed;
-
-    if (window.tinyMCE && (ed = tinyMCE.get(this.env.composebody)) && ed.plugins)
-      ed.plugins.spellchecker.selectedLang = lang;
-    else if (this.env.spellcheck)
-      this.env.spellcheck.setCurrentLanguage(lang);
+    this.editor.set_language(lang);
   };
 
   // resume spellchecking, highlight provided mispellings without new ajax request
-  this.spellcheck_resume = function(ishtml, data)
+  this.spellcheck_resume = function(data)
   {
-    if (ishtml) {
-      var ed = tinyMCE.get(this.env.composebody);
-        sp = ed.plugins.spellchecker;
-
-      sp.active = 1;
-      sp._markWords(data);
-      ed.nodeChanged();
-    }
-    else {
-      var sp = this.env.spellcheck;
-      sp.prepare(false, true);
-      sp.processData(data);
-    }
-
-    this.spellcheck_state();
-  }
+    this.editor.spellcheck_resume(data);
+  };
 
   this.set_draft_id = function(id)
   {
@@ -3727,12 +3753,13 @@
 
   this.auto_save_start = function()
   {
-    if (this.env.draft_autosave)
+    if (this.env.draft_autosave) {
       this.draft_autosave_submit = false;
       this.save_timer = setTimeout(function(){
           ref.draft_autosave_submit = true;  // set auto-saved flag (#1489789)
           ref.command("savedraft");
       }, this.env.draft_autosave * 1000);
+    }
 
     // save compose form content to local storage every 5 seconds
     if (!this.local_save_timer && window.localStorage) {
@@ -3755,20 +3782,17 @@
   this.compose_field_hash = function(save)
   {
     // check input fields
-    var ed, i, val, str = '', hash_fields = ['to', 'cc', 'bcc', 'subject'];
+    var i, id, val, str = '', hash_fields = ['to', 'cc', 'bcc', 'subject'];
 
     for (i=0; i<hash_fields.length; i++)
       if (val = $('[name="_' + hash_fields[i] + '"]').val())
         str += val + ':';
 
-    if (window.tinyMCE && (ed = tinyMCE.get(this.env.composebody)))
-      str += ed.getContent();
-    else
-      str += $("[name='_message']").val();
+    str += this.editor.get_content();
 
     if (this.env.attachments)
-      for (var upload_id in this.env.attachments)
-        str += upload_id;
+      for (id in this.env.attachments)
+        str += id;
 
     if (save)
       this.cmp_hash = str;
@@ -3783,9 +3807,7 @@
       ed, empty = true;
 
     // get fresh content from editor
-    if (window.tinyMCE && (ed = tinyMCE.get(this.env.composebody))) {
-      tinyMCE.triggerSave();
-    }
+    this.editor.save();
 
     if (this.env.draft_id) {
       formdata.draft_id = this.env.draft_id;
@@ -3848,15 +3870,8 @@
       });
 
       // initialize HTML editor
-      if (formdata._is_html == '1') {
-        if (!html_mode) {
-          tinyMCE.execCommand('mceAddControl', false, this.env.composebody);
-          this.triggerEvent('aftertoggle-editor', { mode:'html' });
-        }
-      }
-      else if (html_mode) {
-        tinyMCE.execCommand('mceRemoveControl', false, this.env.composebody);
-        this.triggerEvent('aftertoggle-editor', { mode:'plain' });
+      if ((formdata._is_html == '1' && !html_mode) || (formdata._is_html != '1' && html_mode)) {
+        this.command('toggle-editor', {id: this.env.composebody, html: !html_mode});
       }
     }
   };
@@ -3905,11 +3920,8 @@
         return;
     }
 
-    var i, rx, cursor_pos, p = -1,
+    var i, rx,
       id = obj.options[obj.selectedIndex].value,
-      input_message = $("[name='_message']"),
-      message = input_message.val(),
-      is_html = ($("input[name='_is_html']").val() == '1'),
       sig = this.env.identity,
       delim = this.env.recipients_separator,
       rx_delim = RegExp.escape(delim),
@@ -3930,7 +3942,7 @@
 
       // cleanup
       rx = new RegExp(rx_delim + '\\s*' + rx_delim, 'g');
-      input_val = input_val.replace(rx, delim);
+      input_val = String(input_val).replace(rx, delim);
       rx = new RegExp('^[\\s' + rx_delim + ']+');
       input_val = input_val.replace(rx, '');
 
@@ -3956,92 +3968,7 @@
     else
       this.enable_command('insert-sig', false);
 
-    if (!is_html) {
-      // remove the 'old' signature
-      if (show_sig && sig && this.env.signatures && this.env.signatures[sig]) {
-        sig = this.env.signatures[sig].text;
-        sig = sig.replace(/\r\n/g, '\n');
-
-        p = this.env.top_posting ? message.indexOf(sig) : message.lastIndexOf(sig);
-        if (p >= 0)
-          message = message.substring(0, p) + message.substring(p+sig.length, message.length);
-      }
-      // add the new signature string
-      if (show_sig && this.env.signatures && this.env.signatures[id]) {
-        sig = this.env.signatures[id].text;
-        sig = sig.replace(/\r\n/g, '\n');
-
-        if (this.env.top_posting) {
-          if (p >= 0) { // in place of removed signature
-            message = message.substring(0, p) + sig + message.substring(p, message.length);
-            cursor_pos = p - 1;
-          }
-          else if (!message) { // empty message
-            cursor_pos = 0;
-            message = '\n\n' + sig;
-          }
-          else if (pos = this.get_caret_pos(input_message.get(0))) { // at cursor position
-            message = message.substring(0, pos) + '\n' + sig + '\n\n' + message.substring(pos, message.length);
-            cursor_pos = pos;
-          }
-          else { // on top
-            cursor_pos = 0;
-            message = '\n\n' + sig + '\n\n' + message.replace(/^[\r\n]+/, '');
-          }
-        }
-        else {
-          message = message.replace(/[\r\n]+$/, '');
-          cursor_pos = !this.env.top_posting && message.length ? message.length+1 : 0;
-          message += '\n\n' + sig;
-        }
-      }
-      else
-        cursor_pos = this.env.top_posting ? 0 : message.length;
-
-      input_message.val(message);
-
-      // move cursor before the signature
-      this.set_caret_pos(input_message.get(0), cursor_pos);
-    }
-    else if (show_sig && this.env.signatures) {  // html
-      var editor = tinyMCE.get(this.env.composebody),
-        sigElem = editor.dom.get('_rc_sig');
-
-      // Append the signature as a div within the body
-      if (!sigElem) {
-        var body = editor.getBody(),
-          doc = editor.getDoc();
-
-        sigElem = doc.createElement('div');
-        sigElem.setAttribute('id', '_rc_sig');
-
-        if (this.env.top_posting) {
-          // if no existing sig and top posting then insert at caret pos
-          editor.getWin().focus(); // correct focus in IE & Chrome
-
-          var node = editor.selection.getNode();
-          if (node.nodeName == 'BODY') {
-            // no real focus, insert at start
-            body.insertBefore(sigElem, body.firstChild);
-            body.insertBefore(doc.createElement('br'), body.firstChild);
-          }
-          else {
-            body.insertBefore(sigElem, node.nextSibling);
-            body.insertBefore(doc.createElement('br'), node.nextSibling);
-          }
-        }
-        else {
-          if (bw.ie)  // add empty line before signature on IE
-            body.appendChild(doc.createElement('br'));
-
-          body.appendChild(sigElem);
-        }
-      }
-
-      if (this.env.signatures[id])
-        sigElem.innerHTML = this.env.signatures[id].html;
-    }
-
+    this.editor.change_signature(id, show_sig);
     this.env.identity = id;
     this.triggerEvent('change_identity');
     return true;
@@ -4083,17 +4010,17 @@
           } else if (this.contentWindow) {
             d = this.contentWindow.document;
           }
-          content = d.childNodes[0].innerHTML;
+          content = d.childNodes[1].innerHTML;
         } catch (err) {}
 
-        if (!content.match(/add2attachment/) && (!bw.opera || (rcmail.env.uploadframe && rcmail.env.uploadframe == e.data.ts))) {
+        if (!content.match(/add2attachment/) && (!bw.opera || (ref.env.uploadframe && ref.env.uploadframe == e.data.ts))) {
           if (!content.match(/display_message/))
-            rcmail.display_message(rcmail.get_label('fileuploaderror'), 'error');
-          rcmail.remove_from_attachment_list(e.data.ts);
+            ref.display_message(ref.get_label('fileuploaderror'), 'error');
+          ref.remove_from_attachment_list(e.data.ts);
         }
         // Opera hack: handle double onload
         if (bw.opera)
-          rcmail.env.uploadframe = e.data.ts;
+          ref.env.uploadframe = e.data.ts;
       });
 
       // display upload indicator and cancel button
@@ -4117,11 +4044,14 @@
   // called from upload page
   this.add2attachment_list = function(name, att, upload_id)
   {
+    if (upload_id)
+      this.triggerEvent('fileuploaded', {name: name, attachment: att, id: upload_id});
+
     if (!this.gui_objects.attachmentlist)
       return false;
 
-    if (!att.complete && ref.env.loadingicon)
-      att.html = '<img src="'+ref.env.loadingicon+'" alt="" class="uploading" />' + att.html;
+    if (!att.complete && this.env.loadingicon)
+      att.html = '<img src="'+this.env.loadingicon+'" alt="" class="uploading" />' + att.html;
 
     if (!att.complete && att.frame)
       att.html = '<a title="'+this.get_label('cancel')+'" onclick="return rcmail.cancel_attachment_upload(\''+name+'\', \''+att.frame+'\');" href="#cancelupload" class="cancelupload">'
@@ -4178,7 +4108,7 @@
 
   this.upload_progress_start = function(action, name)
   {
-    setTimeout(function() { rcmail.http_request(action, {_progress: name}); },
+    setTimeout(function() { ref.http_request(action, {_progress: name}); },
       this.env.upload_progress_time * 1000);
   };
 
@@ -4209,7 +4139,8 @@
   {
     if (value != '') {
       var r, lock = this.set_busy(true, 'searching'),
-        url = this.search_params(value);
+        url = this.search_params(value),
+        action = this.env.action == 'compose' && this.contact_list ? 'search-contacts' : 'search';
 
       if (this.message_list)
         this.clear_message_list();
@@ -4224,7 +4155,6 @@
       // reset vars
       this.env.current_page = 1;
 
-      var action = this.env.action == 'compose' && this.contact_list ? 'search-contacts' : 'search';
       r = this.http_request(action, url, lock);
 
       this.env.qsearch = {lock: lock, request: r};
@@ -4238,9 +4168,9 @@
 
   this.continue_search = function(request_id)
   {
-    var lock = ref.set_busy(true, 'stillsearching');
+    var lock = this.set_busy(true, 'stillsearching');
 
-    setTimeout(function(){
+    setTimeout(function() {
       var url = ref.search_params();
       url._continue = request_id;
       ref.env.qsearch = { lock: lock, request: ref.http_request('search', url, lock) };
@@ -4248,7 +4178,7 @@
   };
 
   // build URL params for search
-  this.search_params = function(search, filter, smods)
+  this.search_params = function(search, filter)
   {
     var n, url = {}, mods_arr = [],
       mods = this.env.search_mods,
@@ -4267,11 +4197,11 @@
     if (search) {
       url._q = search;
 
-      if (!smods && mods && this.message_list)
-        smods = mods[mbox] || mods['*'];
+      if (mods && this.message_list)
+        mods = mods[mbox] || mods['*'];
 
-      if (smods) {
-        for (n in smods)
+      if (mods) {
+        for (n in mods)
           mods_arr.push(n);
         url._headers = mods_arr.join(',');
       }
@@ -4317,7 +4247,7 @@
 
   this.set_searchmods = function(mods)
   {
-    var mbox = rcmail.env.mailbox,
+    var mbox = this.env.mailbox,
       scope = this.env.search_scope || 'base';
 
     if (scope == 'all')
@@ -4326,14 +4256,15 @@
     if (!this.env.search_mods)
       this.env.search_mods = {};
 
-    this.env.search_mods[mbox] = mods;
+    if (mbox)
+      this.env.search_mods[mbox] = mods;
   };
 
   this.is_multifolder_listing = function()
   {
-    return typeof this.env.multifolder_listing != 'undefined' ? this.env.multifolder_listing :
+    return this.env.multifolder_listing !== undefined ? this.env.multifolder_listing :
       (this.env.search_request && (this.env.search_scope || 'base') != 'base');
-  }
+  };
 
   this.sent_successfully = function(type, msg, folders)
   {
@@ -4369,8 +4300,7 @@
     if (this.ksearch_timer)
       clearTimeout(this.ksearch_timer);
 
-    var highlight,
-      key = rcube_event.get_keycode(e),
+    var key = rcube_event.get_keycode(e),
       mod = rcube_event.get_modifier(e);
 
     switch (key) {
@@ -4379,9 +4309,9 @@
         if (!this.ksearch_visible())
           return;
 
-        var dir = key==38 ? 1 : 0;
+        var dir = key == 38 ? 1 : 0,
+          highlight = document.getElementById('rcmkSearchItem' + this.ksearch_selected);
 
-        highlight = document.getElementById('rcmksearchSelected');
         if (!highlight)
           highlight = this.ksearch_pane.__ul.firstChild;
 
@@ -4424,19 +4354,19 @@
 
   this.ksearch_visible = function()
   {
-    return (this.ksearch_selected !== null && this.ksearch_selected !== undefined && this.ksearch_value);
+    return this.ksearch_selected !== null && this.ksearch_selected !== undefined && this.ksearch_value;
   };
 
   this.ksearch_select = function(node)
   {
-    var current = $('#rcmksearchSelected');
-    if (current[0] && node) {
-      current.removeAttr('id').removeClass('selected');
+    if (this.ksearch_pane && node) {
+      this.ksearch_pane.find('li.selected').removeClass('selected').removeAttr('aria-selected');
     }
 
     if (node) {
-      $(node).attr('id', 'rcmksearchSelected').addClass('selected');
+      $(node).addClass('selected').attr('aria-selected', 'true');
       this.ksearch_selected = node._rcm_id;
+      $(this.ksearch_input).attr('aria-activedescendant', 'rcmkSearchItem' + this.ksearch_selected);
     }
   };
 
@@ -4475,9 +4405,7 @@
     this.ksearch_input.value = pre + insert + end;
 
     // set caret to insert pos
-    cpos = p+insert.length;
-    if (this.ksearch_input.setSelectionRange)
-      this.ksearch_input.setSelectionRange(cpos, cpos);
+    this.set_caret_pos(this.ksearch_input, p + insert.length);
 
     if (trigger) {
       this.triggerEvent('autocomplete_insert', { field:this.ksearch_input, insert:insert, data:this.env.contacts[id] });
@@ -4567,16 +4495,20 @@
       return;
 
     // display search results
-    var i, len, ul, li, text, type, init,
+    var i, id, len, ul, text, type, init,
       value = this.ksearch_value,
       maxlen = this.env.autocomplete_max ? this.env.autocomplete_max : 15;
 
     // create results pane if not present
     if (!this.ksearch_pane) {
       ul = $('<ul>');
-      this.ksearch_pane = $('<div>').attr('id', 'rcmKSearchpane')
+      this.ksearch_pane = $('<div>').attr('id', 'rcmKSearchpane').attr('role', 'listbox')
         .css({ position:'absolute', 'z-index':30000 }).append(ul).appendTo(document.body);
       this.ksearch_pane.__ul = ul[0];
+
+      // register (delegate) event handlers
+      ul.on('mouseover', 'li', function(e){ ref.ksearch_select(e.target); })
+        .on('onmouseup', 'li', function(e){ ref.ksearch_click(e.target); })
     }
 
     ul = this.ksearch_pane.__ul;
@@ -4601,23 +4533,29 @@
       for (i=0; i < len && maxlen > 0; i++) {
         text = typeof results[i] === 'object' ? results[i].name : results[i];
         type = typeof results[i] === 'object' ? results[i].type : '';
-        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>');
-        li.onmouseover = function(){ ref.ksearch_select(this); };
-        li.onmouseup = function(){ ref.ksearch_click(this) };
-        li._rcm_id = this.env.contacts.length + i;
-        if (type) li.className = type;
-        ul.appendChild(li);
+        id = i + this.env.contacts.length;
+        $('<li>').attr('id', 'rcmkSearchItem' + id)
+          .attr('role', 'option')
+          .html(this.quote_html(text.replace(new RegExp('('+RegExp.escape(value)+')', 'ig'), '##$1%%')).replace(/##([^%]+)%%/g, '<b>$1</b>'))
+          .addClass(type || '')
+          .appendTo(ul)
+          .get(0)._rcm_id = id;
         maxlen -= 1;
       }
     }
 
     if (ul.childNodes.length) {
+      // set the right aria-* attributes to the input field
+      $(this.ksearch_input)
+        .attr('aria-haspopup', 'true')
+        .attr('aria-expanded', 'true')
+        .attr('aria-owns', 'rcmKSearchpane');
+
       this.ksearch_pane.show();
+
       // select the first
       if (!this.env.contacts.length) {
-        $('li:first', ul).attr('id', 'rcmksearchSelected').addClass('selected');
-        this.ksearch_selected = 0;
+        this.ksearch_select($('li:first', ul).get(0));
       }
     }
 
@@ -4653,6 +4591,12 @@
 
     if (this.ksearch_pane)
       this.ksearch_pane.hide();
+
+    $(this.ksearch_input)
+      .attr('aria-haspopup', 'false')
+      .attr('aria-expanded', 'false')
+      .removeAttr('aria-activedescendant')
+      .removeAttr('aria-owns');
 
     this.ksearch_destroy();
   };
@@ -4858,6 +4802,7 @@
       // add link to pop back to parent group
       if (this.env.address_group_stack.length > 1) {
         $('<a href="#list">...</a>')
+          .attr('title', this.gettext('uponelevel'))
           .addClass('poplink')
           .appendTo(boxtitle)
           .click(function(e){ return ref.command('popgroup','',this); });
@@ -4891,7 +4836,7 @@
     else if (framed)
       return false;
 
-    if (action && (cid || action=='add') && !this.drag_active) {
+    if (action && (cid || action == 'add') && !this.drag_active) {
       if (this.env.group)
         url._gid = this.env.group;
 
@@ -4908,7 +4853,9 @@
   // add/delete member to/from the group
   this.group_member_change = function(what, cid, source, gid)
   {
-    what = what == 'add' ? 'add' : 'del';
+    if (what != 'add')
+      what = 'del';
+
     var label = this.get_label(what == 'add' ? 'addingmember' : 'removingmember'),
       lock = this.display_message(label, 'loading'),
       post_data = {_cid: cid, _source: source, _gid: gid};
@@ -4945,7 +4892,7 @@
   // copy contact(s) to the specified target (group or directory)
   this.copy_contacts = function(to)
   {
-    var n, dest = to.type == 'group' ? to.source : to.id,
+    var dest = to.type == 'group' ? to.source : to.id,
       source = this.env.source,
       group = this.env.group ? this.env.group : '',
       cid = this.contact_list.get_selection().join(',');
@@ -5023,6 +4970,7 @@
     var n, a_cids = [],
       label = action == 'delete' ? 'contactdeleting' : 'movingcontact',
       lock = this.display_message(this.get_label(label), 'loading');
+
     if (this.env.cid)
       a_cids.push(this.env.cid);
     else {
@@ -5060,15 +5008,15 @@
   // update a contact record in the list
   this.update_contact_row = function(cid, cols_arr, newcid, source, data)
   {
-    var c, row, list = this.contact_list;
+    var list = this.contact_list;
 
     cid = this.html_identifier(cid);
 
     // when in searching mode, concat cid with the source name
     if (!list.rows[cid]) {
-      cid = cid+'-'+source;
+      cid = cid + '-' + source;
       if (newcid)
-        newcid = newcid+'-'+source;
+        newcid = newcid + '-' + source;
     }
 
     list.update_row(cid, cols_arr, newcid, true);
@@ -5084,7 +5032,7 @@
     var c, col, list = this.contact_list,
       row = { cols:[] };
 
-    row.id = 'rcmrow'+this.html_identifier(cid);
+    row.id = 'rcmrow' + this.html_identifier(cid);
     row.className = 'contact ' + (classes || '');
 
     if (list.in_selection(cid))
@@ -5120,7 +5068,7 @@
       return false;
     });
 
-    $('select.addfieldmenu').change(function(e) {
+    $('select.addfieldmenu').change(function() {
       ref.insert_edit_field($(this).val(), $(this).attr('rel'), this);
       this.selectedIndex = 0;
     });
@@ -5158,7 +5106,7 @@
     if (!this.name_input) {
       this.enable_command('list', 'listgroup', false);
       this.name_input = $('<input>').attr('type', 'text').val(this.env.contactgroups['G'+this.env.source+this.env.group].name);
-      this.name_input.bind('keydown', function(e){ return rcmail.add_input_keydown(e); });
+      this.name_input.bind('keydown', function(e) { return ref.add_input_keydown(e); });
       this.env.group_renaming = true;
 
       var link, li = this.get_folder_li('G'+this.env.source+this.env.group,'',true);
@@ -5182,6 +5130,7 @@
   this.remove_group_item = function(prop)
   {
     var key = 'G'+prop.source+prop.id;
+
     if (this.treelist.remove(key)) {
       this.triggerEvent('group_delete', { source:prop.source, id:prop.id });
       delete this.env.contactfolders[key];
@@ -5199,7 +5148,7 @@
 
     if (!this.name_input) {
       this.name_input = $('<input>').attr('type', 'text').data('tt', type);
-      this.name_input.bind('keydown', function(e){ return rcmail.add_input_keydown(e); });
+      this.name_input.bind('keydown', function(e) { return ref.add_input_keydown(e); });
       this.name_input_li = $('<li>').addClass(type).append(this.name_input);
 
       var ul, li;
@@ -5226,21 +5175,21 @@
   //remove selected contacts from current active group
   this.group_remove_selected = function()
   {
-    ref.http_post('group-delmembers', {_cid: this.contact_list.selection,
+    this.http_post('group-delmembers', {_cid: this.contact_list.selection,
       _source: this.env.source, _gid: this.env.group});
   };
 
   //callback after deleting contact(s) from current group
   this.remove_group_contacts = function(props)
   {
-    if('undefined' != typeof this.env.group && (this.env.group === props.gid)){
+    if (this.env.group !== undefined && (this.env.group === props.gid)) {
       var n, selection = this.contact_list.get_selection();
       for (n=0; n<selection.length; n++) {
         id = selection[n];
         this.contact_list.remove_row(id, (n == selection.length-1));
       }
     }
-  }
+  };
 
   // handler for keyboard events on the input field
   this.add_input_keydown = function(e)
@@ -5299,10 +5248,11 @@
     this.reset_add_input();
 
     prop.type = 'group';
+
     var key = 'G'+prop.source+prop.id,
       link = $('<a>').attr('href', '#')
         .attr('rel', prop.source+':'+prop.id)
-        .click(function() { return rcmail.command('listgroup', prop, this); })
+        .click(function() { return ref.command('listgroup', prop, this); })
         .html(prop.name);
 
     this.env.contactfolders[key] = this.env.contactgroups[key] = prop;
@@ -5337,7 +5287,7 @@
       newnode.id = newkey;
       newnode.html = $('<a>').attr('href', '#')
         .attr('rel', prop.source+':'+prop.newid)
-        .click(function() { return rcmail.command('listgroup', newprop, this); })
+        .click(function() { return ref.command('listgroup', newprop, this); })
         .html(prop.name);
     }
     // update displayed group name
@@ -5354,9 +5304,11 @@
 
   this.update_group_commands = function()
   {
-    var source = this.env.source != '' ? this.env.address_sources[this.env.source] : null;
-    this.enable_command('group-create', (source && source.groups && !source.readonly));
-    this.enable_command('group-rename', 'group-delete', (source && source.groups && this.env.group && !source.readonly));
+    var source = this.env.source != '' ? this.env.address_sources[this.env.source] : null,
+      supported = source && source.groups && !source.readonly;
+
+    this.enable_command('group-create', supported);
+    this.enable_command('group-rename', 'group-delete', supported && this.env.group);
   };
 
   this.init_edit_field = function(col, elem)
@@ -5394,6 +5346,7 @@
 
       if (appendcontainer.length && appendcontainer.get(0).nodeName == 'FIELDSET') {
         var input, colprop = this.env.coltypes[col],
+          input_id = 'ff_' + col + (colprop.count || 0),
           row = $('<div>').addClass('row'),
           cell = $('<div>').addClass('contactfieldcontent data'),
           label = $('<div>').addClass('contactfieldlabel label');
@@ -5401,13 +5354,14 @@
         if (colprop.subtypes_select)
           label.html(colprop.subtypes_select);
         else
-          label.html(colprop.label);
+          label.html('<label for="' + input_id + '">' + colprop.label + '</label>');
 
         var name_suffix = colprop.limit != 1 ? '[]' : '';
+
         if (colprop.type == 'text' || colprop.type == 'date') {
           input = $('<input>')
             .addClass('ff_'+col)
-            .attr({type: 'text', name: '_'+col+name_suffix, size: colprop.size})
+            .attr({type: 'text', name: '_'+col+name_suffix, size: colprop.size, id: input_id})
             .appendTo(cell);
 
           this.init_edit_field(col, input);
@@ -5418,18 +5372,19 @@
         else if (colprop.type == 'textarea') {
           input = $('<textarea>')
             .addClass('ff_'+col)
-            .attr({ name: '_'+col+name_suffix, cols:colprop.size, rows:colprop.rows })
+            .attr({ name: '_'+col+name_suffix, cols:colprop.size, rows:colprop.rows, id: input_id })
             .appendTo(cell);
 
           this.init_edit_field(col, input);
         }
         else if (colprop.type == 'composite') {
-          var childcol, cp, first, templ, cols = [], suffices = [];
+          var i, childcol, cp, first, templ, cols = [], suffices = [];
+
           // read template for composite field order
           if ((templ = this.env[col+'_template'])) {
-            for (var j=0; j < templ.length; j++) {
-              cols.push(templ[j][1]);
-              suffices.push(templ[j][2]);
+            for (i=0; i < templ.length; i++) {
+              cols.push(templ[i][1]);
+              suffices.push(templ[i][2]);
             }
           }
           else {  // list fields according to appearance in colprop
@@ -5437,7 +5392,7 @@
               cols.push(childcol);
           }
 
-          for (var i=0; i < cols.length; i++) {
+          for (i=0; i < cols.length; i++) {
             childcol = cols[i];
             cp = colprop.childs[childcol];
             input = $('<input>')
@@ -5453,7 +5408,7 @@
         else if (colprop.type == 'select') {
           input = $('<select>')
             .addClass('ff_'+col)
-            .attr('name', '_'+col+name_suffix)
+            .attr({ 'name': '_'+col+name_suffix, id: input_id })
             .appendTo(cell);
 
           var options = input.attr('options');
@@ -5514,7 +5469,7 @@
   {
     if (form && form.elements._photo.value) {
       this.async_upload_form(form, 'upload-photo', function(e) {
-        rcmail.set_busy(false, null, rcmail.file_upload_id);
+        ref.set_busy(false, null, ref.file_upload_id);
       });
 
       // display upload indicator
@@ -5579,7 +5534,7 @@
     var key = 'S'+id,
       link = $('<a>').attr('href', '#')
         .attr('rel', id)
-        .click(function() { return rcmail.command('listsearch', id, this); })
+        .click(function() { return ref.command('listsearch', id, this); })
         .html(name),
       prop = { name:name, id:id };
 
@@ -5622,7 +5577,7 @@
 
   this.listsearch = function(id)
   {
-    var folder, lock = this.set_busy(true, 'searching');
+    var lock = this.set_busy(true, 'searching');
 
     if (this.contact_list) {
       this.list_contacts_clear();
@@ -5760,7 +5715,7 @@
     this.last_sub_rx = RegExp('['+delim+']?[^'+delim+']+$');
 
     this.subscription_list = new rcube_list_widget(this.gui_objects.subscriptionlist,
-      {multiselect:false, draggable:true, keyboard:false, toggleselect:true});
+      {multiselect:false, draggable:true, keyboard:true, toggleselect:true});
     this.subscription_list
       .addEventListener('select', function(o){ ref.subscription_select(o); })
       .addEventListener('dragstart', function(o){ ref.drag_active = true; })
@@ -5769,7 +5724,8 @@
         row.obj.onmouseover = function() { ref.focus_subscription(row.id); };
         row.obj.onmouseout = function() { ref.unfocus_subscription(row.id); };
       })
-      .init();
+      .init()
+      .focus();
 
     $('#mailboxroot')
       .mouseover(function(){ ref.focus_subscription(this.id); })
@@ -5801,7 +5757,7 @@
 
     this.env.dstfolder = null;
 
-    if (this.env.subscriptionrows[id] && row.length)
+    if (row.length && this.env.subscriptionrows[id])
       row.removeClass('droptarget');
     else
       $(this.subscription_list.frame).removeClass('droptarget');
@@ -5869,7 +5825,8 @@
     if (!this.gui_objects.subscriptionlist)
       return false;
 
-    var row, n, i, tmp, tmp_name, rowid, folders = [], list = [], slist = [],
+    var row, n, tmp, tmp_name, rowid, collator,
+      folders = [], list = [], slist = [],
       tbody = this.gui_objects.subscriptionlist.tBodies[0],
       refrow = $('tr', tbody).get(1),
       id = 'rcmrow'+((new Date).getTime());
@@ -5896,24 +5853,32 @@
     // add to folder/row-ID map
     this.env.subscriptionrows[id] = [name, display_name, false];
 
-    // sort folders (to find a place where to insert the row)
-    // replace delimiter with \0 character to fix sorting
-    // issue where 'Abc Abc' would be placed before 'Abc/def'
-    var replace_from = RegExp(RegExp.escape(this.env.delimiter), 'g'),
-      replace_to = String.fromCharCode(0);
+    // copy folders data to an array for sorting
+    $.each(this.env.subscriptionrows, function(k, v) { folders.push(v); });
 
-    $.each(this.env.subscriptionrows, function(k,v) {
-      if (v.length < 4) {
-        var n = v[0];
-        n = n.replace(replace_from, replace_to);
-        v.push(n);
-      }
-      folders.push(v);
-    });
+    try {
+      // use collator if supported (FF29, IE11, Opera15, Chrome24)
+      collator = new Intl.Collator(this.env.locale.replace('_', '-'));
+    }
+    catch (e) {};
 
+    // sort folders
     folders.sort(function(a, b) {
-      var len = a.length - 1; n1 = a[len], n2 = b[len];
-      return n1 < n2 ? -1 : 1;
+      var i, f1, f2,
+        path1 = a[0].split(ref.env.delimiter),
+        path2 = b[0].split(ref.env.delimiter);
+
+      for (i=0; i<path1.length; i++) {
+        f1 = path1[i];
+        f2 = path2[i];
+
+        if (f1 !== f2) {
+          if (collator)
+            return collator.compare(f1, f2);
+          else
+            return f1 < f2 ? -1 : 1;
+        }
+      }
     });
 
     for (n in folders) {
@@ -6055,7 +6020,7 @@
     this.subscription_list.remove_row(id.replace(/^rcmrow/, ''));
     $('#'+id).remove();
     delete this.env.subscriptionrows[id];
-  }
+  };
 
   this.get_subfolders = function(folder)
   {
@@ -6075,7 +6040,7 @@
     }
 
     return list;
-  }
+  };
 
   this.subscribe = function(folder)
   {
@@ -6099,9 +6064,7 @@
     var id, folders = this.env.subscriptionrows;
     for (id in folders)
       if (folders[id] && folders[id][0] == folder)
-        break;
-
-    return id;
+        return id;
   };
 
   // when user select a folder in manager
@@ -6163,14 +6126,14 @@
     elm._command = cmd;
     elm._id = prop.id;
     if (prop.sel) {
-      elm.onmousedown = function(e){ return rcmail.button_sel(this._command, this._id); };
-      elm.onmouseup = function(e){ return rcmail.button_out(this._command, this._id); };
+      elm.onmousedown = function(e) { return ref.button_sel(this._command, this._id); };
+      elm.onmouseup = function(e) { return ref.button_out(this._command, this._id); };
       if (preload)
         new Image().src = prop.sel;
     }
     if (prop.over) {
-      elm.onmouseover = function(e){ return rcmail.button_over(this._command, this._id); };
-      elm.onmouseout = function(e){ return rcmail.button_out(this._command, this._id); };
+      elm.onmouseover = function(e) { return ref.button_over(this._command, this._id); };
+      elm.onmouseout = function(e) { return ref.button_out(this._command, this._id); };
       if (preload)
         new Image().src = prop.over;
     }
@@ -6192,14 +6155,14 @@
   // set button to a specific state
   this.set_button = function(command, state)
   {
-    var n, button, obj, a_buttons = this.buttons[command],
+    var n, button, obj, $obj, a_buttons = this.buttons[command],
       len = a_buttons ? a_buttons.length : 0;
 
     for (n=0; n<len; n++) {
       button = a_buttons[n];
       obj = document.getElementById(button.id);
 
-      if (!obj || button.status == state)
+      if (!obj || button.status === state)
         continue;
 
       // get default/passive setting of the button
@@ -6212,19 +6175,18 @@
       else if (!button.status)
         button.pas = String(obj.className);
 
+      button.status = state;
+
       // set image according to button state
       if (button.type == 'image' && button[state]) {
-        button.status = state;
         obj.src = button[state];
       }
       // set class name according to button state
       else if (button[state] !== undefined) {
-        button.status = state;
         obj.className = button[state];
       }
       // disable/enable input buttons
       if (button.type == 'input') {
-        button.status = state;
         obj.disabled = state == 'pas';
       }
       else if (button.type == 'uibutton') {
@@ -6232,8 +6194,9 @@
         $(obj).button('option', 'disabled', state == 'pas');
       }
       else {
-        $(obj)
-          .attr('tabindex', state == 'pas' || state == 'sel' ? '-1' : '0')
+        $obj = $(obj);
+        $obj
+          .attr('tabindex', state == 'pas' || state == 'sel' ? '-1' : ($obj.attr('data-tabindex') || '0'))
           .attr('aria-disabled', state == 'pas' || state == 'sel' ? 'true' : 'false');
       }
     }
@@ -6490,10 +6453,8 @@
       this.treelist.select(name);
     }
     else if (this.gui_objects.folderlist) {
-      $('li.selected', this.gui_objects.folderlist)
-        .removeClass('selected').addClass('unfocused');
-      $(this.get_folder_li(name, prefix, encode))
-        .removeClass('unfocused').addClass('selected');
+      $('li.selected', this.gui_objects.folderlist).removeClass('selected');
+      $(this.get_folder_li(name, prefix, encode)).addClass('selected');
 
       // trigger event hook
       this.triggerEvent('selectfolder', { folder:name, prefix:prefix });
@@ -6543,7 +6504,7 @@
         tr = document.createElement('tr');
 
         for (c=0, len=repl.length; c < len; c++) {
-          cell = document.createElement('td');
+          cell = document.createElement('th');
           cell.innerHTML = repl[c].html || '';
           if (repl[c].id) cell.id = repl[c].id;
           if (repl[c].className) cell.className = repl[c].className;
@@ -6705,7 +6666,7 @@
 
     $(elem).removeClass('show-headers').addClass('hide-headers');
     $(this.gui_objects.all_headers_row).show();
-    elem.onclick = function() { rcmail.command('hide-headers', '', elem); };
+    elem.onclick = function() { ref.command('hide-headers', '', elem); };
 
     // fetch headers only once
     if (!this.gui_objects.all_headers_box.innerHTML) {
@@ -6723,21 +6684,19 @@
 
     $(elem).removeClass('hide-headers').addClass('show-headers');
     $(this.gui_objects.all_headers_row).hide();
-    elem.onclick = function() { rcmail.command('show-headers', '', elem); };
+    elem.onclick = function() { ref.command('show-headers', '', elem); };
   };
 
   // create folder selector popup, position and display it
-  this.folder_selector = function(obj, callback)
+  this.folder_selector = function(event, callback)
   {
     var container = this.folder_selector_element;
 
     if (!container) {
       var rows = [],
         delim = this.env.delimiter,
-        ul = $('<ul class="toolbarmenu iconized">'),
-        li = document.createElement('li'),
-        link = document.createElement('a'),
-        span = document.createElement('span');
+        ul = $('<ul class="toolbarmenu">'),
+        link = document.createElement('a');
 
       container = $('<div id="folder-selector" class="popupmenu"></div>');
       link.href = '#';
@@ -6745,33 +6704,30 @@
 
       // loop over sorted folders list
       $.each(this.env.mailboxes_list, function() {
-        var tmp, n = 0, s = 0,
+        var n = 0, s = 0,
           folder = ref.env.mailboxes[this],
           id = folder.id,
-          a = link.cloneNode(false), row = li.cloneNode(false);
+          a = $(link.cloneNode(false)),
+          row = $('<li>');
 
         if (folder.virtual)
-          a.className += ' virtual';
-        else {
-          a.className += ' active';
-          a.onclick = function() { container.hide().data('callback')(folder.id); };
-        }
+          a.addClass('virtual').attr('aria-disabled', 'true').attr('tabindex', '-1');
+        else
+          a.addClass('active').data('id', folder.id);
 
         if (folder['class'])
-          a.className += ' ' + folder['class'];
+          a.addClass(folder['class']);
 
         // calculate/set indentation level
         while ((s = id.indexOf(delim, s)) >= 0) {
           n++; s++;
         }
-        a.style.paddingLeft =  n ? (n * 16) + 'px' : 0;
+        a.css('padding-left', n ? (n * 16) + 'px' : 0);
 
         // add folder name element
-        tmp = span.cloneNode(false);
-        $(tmp).text(folder.name);
-        a.appendChild(tmp);
+        a.append($('<span>').text(folder.name));
 
-        row.appendChild(a);
+        row.append(a);
         rows.push(row);
       });
 
@@ -6783,22 +6739,156 @@
 
       // set max-height if the list is long
       if (rows.length > 10)
-        container.css('max-height', $('li', container)[0].offsetHeight * 10 + 9)
+        container.css('max-height', $('li', container)[0].offsetHeight * 10 + 9);
 
-      // hide selector on click out of selector element
-      var fn = function(e) { if (e.target != container.get(0)) container.hide(); };
-      $(document.body).on('mouseup', fn);
-      $('iframe').contents().on('mouseup', fn)
-        .load(function(e) { try { $(this).contents().on('mouseup', fn); } catch(e) {}; });
+      // register delegate event handler for folder item clicks
+      container.on('click', 'a.active', function(e){
+        container.data('callback')($(this).data('id'));
+        return false;
+      });
 
       this.folder_selector_element = container;
     }
 
-    // position menu on the screen
-    this.element_position(container, obj);
+    container.data('callback', callback);
 
-    container.show().data('callback', callback);
+    // position menu on the screen
+    this.show_menu('folder-selector', true, event);
   };
+
+
+  /***********************************************/
+  /*********    popup menu functions     *********/
+  /***********************************************/
+
+  // Show/hide a specific popup menu
+  this.show_menu = function(prop, show, event)
+  {
+    var name = typeof prop == 'object' ? prop.menu : prop,
+      obj = $('#'+name),
+      ref = event && event.target ? $(event.target) : $(obj.attr('rel') || '#'+name+'link'),
+      keyboard = rcube_event.is_keyboard(event),
+      align = obj.attr('data-align') || '',
+      stack = false;
+
+    // find "real" button element
+    if (ref.get(0).tagName != 'A' && ref.closest('a').length)
+      ref = ref.closest('a');
+
+    if (typeof prop == 'string')
+      prop = { menu:name };
+
+    // let plugins or skins provide the menu element
+    if (!obj.length) {
+      obj = this.triggerEvent('menu-get', { name:name, props:prop, originalEvent:event });
+    }
+
+    if (!obj || !obj.length) {
+      // just delegate the action to subscribers
+      return this.triggerEvent(show === false ? 'menu-close' : 'menu-open', { name:name, props:prop, originalEvent:event });
+    }
+
+    // move element to top for proper absolute positioning
+    obj.appendTo(document.body);
+
+    if (typeof show == 'undefined')
+      show = obj.is(':visible') ? false : true;
+
+    if (show && ref.length) {
+      var win = $(window),
+        pos = ref.offset(),
+        above = align.indexOf('bottom') >= 0;
+
+      stack = ref.attr('role') == 'menuitem' || ref.closest('[role=menuitem]').length > 0;
+
+      ref.offsetWidth = ref.outerWidth();
+      ref.offsetHeight = ref.outerHeight();
+      if (!above && pos.top + ref.offsetHeight + obj.height() > win.height()) {
+        above = true;
+      }
+      if (align.indexOf('right') >= 0) {
+        pos.left = pos.left + ref.outerWidth() - obj.width();
+      }
+      else if (stack) {
+        pos.left = pos.left + ref.offsetWidth - 5;
+        pos.top -= ref.offsetHeight;
+      }
+      if (pos.left + obj.width() > win.width()) {
+        pos.left = win.width() - obj.width() - 12;
+      }
+      pos.top = Math.max(0, pos.top + (above ? -obj.height() : ref.offsetHeight));
+      obj.css({ left:pos.left+'px', top:pos.top+'px' });
+    }
+
+    // add menu to stack
+    if (show) {
+      // truncate stack down to the one containing the ref link
+      for (var i = this.menu_stack.length - 1; stack && i >= 0; i--) {
+        if (!$(ref).parents('#'+this.menu_stack[i]).length)
+          this.hide_menu(this.menu_stack[i]);
+      }
+      if (stack && this.menu_stack.length) {
+        obj.data('parent', $.last(this.menu_stack));
+        obj.css('z-index', ($('#'+$.last(this.menu_stack)).css('z-index') || 0) + 1);
+      }
+      else if (!stack && this.menu_stack.length) {
+        this.hide_menu(this.menu_stack[0], event);
+      }
+
+      obj.show().attr('aria-hidden', 'false').data('opener', ref.attr('aria-expanded', 'true').get(0));
+      this.triggerEvent('menu-open', { name:name, obj:obj, props:prop, originalEvent:event });
+      this.menu_stack.push(name);
+
+      this.menu_keyboard_active = show && keyboard;
+      if (this.menu_keyboard_active) {
+        this.focused_menu = name;
+        obj.find('a,input:not(:disabled)').not('[aria-disabled=true]').first().focus();
+      }
+    }
+    else {  // close menu
+      this.hide_menu(name, event);
+    }
+
+    return show;
+  };
+
+  // hide the given popup menu (and it's childs)
+  this.hide_menu = function(name, event)
+  {
+    if (!this.menu_stack.length) {
+      // delegate to subscribers
+      this.triggerEvent('menu-close', { name:name, props:{ menu:name }, originalEvent:event });
+      return;
+    }
+
+    var obj, keyboard = rcube_event.is_keyboard(event);
+    for (var j=this.menu_stack.length-1; j >= 0; j--) {
+      obj = $('#' + this.menu_stack[j]).hide().attr('aria-hidden', 'true').data('parent', false);
+      this.triggerEvent('menu-close', { name:this.menu_stack[j], obj:obj, props:{ menu:this.menu_stack[j] }, originalEvent:event });
+      if (this.menu_stack[j] == name) {
+        j = -1;  // stop loop
+        if (obj.data('opener')) {
+          $(obj.data('opener')).attr('aria-expanded', 'false');
+          if (keyboard)
+            obj.data('opener').focus();
+        }
+      }
+      this.menu_stack.pop();
+    }
+
+    // focus previous menu in stack
+    if (this.menu_stack.length && keyboard) {
+      this.menu_keyboard_active = true;
+      this.focused_menu = $.last(this.menu_stack);
+      if (!obj || !obj.data('opener'))
+        $('#'+this.focused_menu).find('a,input:not(:disabled)').not('[aria-disabled=true]').first().focus();
+    }
+    else {
+      this.focused_menu = null;
+      this.menu_keyboard_active = false;
+    }
+  }
+
 
   // position a menu element on the screen in relation to other object
   this.element_position = function(element, obj)
@@ -6833,32 +6923,61 @@
     element.css({left: left + 'px', top: top + 'px'});
   };
 
+  // initialize HTML editor
+  this.editor_init = function(config, id)
+  {
+    this.editor = new rcube_text_editor(config, id);
+  };
+
 
   /********************************************************/
   /*********  html to text conversion functions   *********/
   /********************************************************/
 
-  this.html2plain = function(htmlText, id)
+  this.html2plain = function(html, func)
   {
-    var url = '?_task=utils&_action=html2text',
+    return this.format_converter(html, 'html', func);
+  };
+
+  this.plain2html = function(plain, func)
+  {
+    return this.format_converter(plain, 'plain', func);
+  };
+
+  this.format_converter = function(text, format, func)
+  {
+    // warn the user (if converted content is not empty)
+    if (!text
+      || (format == 'html' && !(text.replace(/<[^>]+>|&nbsp;|\xC2\xA0|\s/g, '')).length)
+      || (format != 'html' && !(text.replace(/\xC2\xA0|\s/g, '')).length)
+    ) {
+      // without setTimeout() here, textarea is filled with initial (onload) content
+      if (func)
+        setTimeout(function() { func(''); }, 50);
+      return true;
+    }
+
+    var confirmed = this.env.editor_warned || confirm(this.get_label('editorwarning'));
+
+    this.env.editor_warned = true;
+
+    if (!confirmed)
+      return false;
+
+    var url = '?_task=utils&_action=' + (format == 'html' ? 'html2text' : 'text2html'),
       lock = this.set_busy(true, 'converting');
 
     this.log('HTTP POST: ' + url);
 
-    $.ajax({ type: 'POST', url: url, data: htmlText, contentType: 'application/octet-stream',
+    $.ajax({ type: 'POST', url: url, data: text, contentType: 'application/octet-stream',
       error: function(o, status, err) { ref.http_error(o, status, err, lock); },
-      success: function(data) { ref.set_busy(false, null, lock); $('#'+id).val(data); ref.log(data); }
+      success: function(data) {
+        ref.set_busy(false, null, lock);
+        if (func) func(data);
+      }
     });
-  };
 
-  this.plain2html = function(plain, id)
-  {
-    var lock = this.set_busy(true, 'converting');
-
-    plain = plain.replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;');
-    $('#'+id).val(plain ? '<pre>'+plain+'</pre>' : '');
-
-    this.set_busy(false, null, lock);
+    return true;
   };
 
 
@@ -6938,6 +7057,13 @@
 
     // reset keep-alive interval
     this.start_keepalive();
+  };
+
+  // update browser location to remember current view
+  this.update_state = function(query)
+  {
+    if (window.history.replaceState)
+      window.history.replaceState({}, document.title, rcmail.url('', query));
   };
 
   // send a http request to the server
@@ -7122,10 +7248,11 @@
           this.enable_command('purge', this.purge_mailbox_test() && !is_multifolder);
           this.enable_command('import-messages', !is_multifolder);
           this.enable_command('expand-all', 'expand-unread', 'collapse-all', this.env.threading && this.env.messagecount && !is_multifolder);
-          this.enable_command('set-listmode', this.env.threads && !is_multifolder);
 
           if ((response.action == 'list' || response.action == 'search') && this.message_list) {
-            this.message_list.focus();
+            this.enable_command('set-listmode', this.env.threads && !is_multifolder);
+            if (this.message_list.rowcount > 0)
+              this.message_list.focus();
             this.msglist_select(this.message_list);
             this.triggerEvent('listupdate', { folder:this.env.mailbox, rowcount:this.message_list.rowcount });
           }
@@ -7137,9 +7264,17 @@
             this.enable_command('search-create', this.env.source == '');
             this.enable_command('search-delete', this.env.search_id);
             this.update_group_commands();
+            if (this.contact_list.rowcount > 0)
+              this.contact_list.focus();
             this.triggerEvent('listupdate', { folder:this.env.source, rowcount:this.contact_list.rowcount });
           }
         }
+        break;
+
+      case 'list-contacts':
+      case 'search-contacts':
+        if (this.contact_list && this.contact_list.rowcount > 0)
+          this.contact_list.focus();
         break;
     }
 
@@ -7200,7 +7335,7 @@
       this.save_compose_form_local();
     }
     else if (redirect_url) {
-      window.setTimeout(function(){ ref.redirect(redirect_url, true); }, 2000);
+      setTimeout(function(){ ref.redirect(redirect_url, true); }, 2000);
     }
   };
 
@@ -7259,12 +7394,12 @@
   // helper method to send an HTTP request with the given iterator value
   this.multi_thread_send_request = function(prop, item)
   {
-    var postdata, query;
+    var k, postdata, query;
 
     // replace %s in post data
     if (prop.postdata) {
       postdata = {};
-      for (var k in prop.postdata) {
+      for (k in prop.postdata) {
         postdata[k] = String(prop.postdata[k]).replace('%s', item);
       }
       postdata._reqid = prop.reqid;
@@ -7276,7 +7411,7 @@
     }
     else if (typeof prop.query == 'object' && prop.query) {
       query = {};
-      for (var k in prop.query) {
+      for (k in prop.query) {
         query[k] = String(prop.query[k]).replace('%s', item);
       }
       query._reqid = prop.reqid;
@@ -7387,14 +7522,14 @@
   this.document_drag_hover = function(e, over)
   {
     e.preventDefault();
-    $(ref.gui_objects.filedrop)[(over?'addClass':'removeClass')]('active');
+    $(this.gui_objects.filedrop)[(over?'addClass':'removeClass')]('active');
   };
 
   this.file_drag_hover = function(e, over)
   {
     e.preventDefault();
     e.stopPropagation();
-    $(ref.gui_objects.filedrop)[(over?'addClass':'removeClass')]('hover');
+    $(this.gui_objects.filedrop)[(over?'addClass':'removeClass')]('hover');
   };
 
   // handler when files are dropped to a designated area.
@@ -7619,7 +7754,7 @@
   {
     var msg = this.env.messages ? this.env.messages[uid] : {};
     return msg.mbox || this.env.mailbox;
-  }
+  };
 
   // gets cursor position
   this.get_caret_pos = function(obj)
@@ -7627,89 +7762,31 @@
     if (obj.selectionEnd !== undefined)
       return obj.selectionEnd;
 
-    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;
-    }
-
     return obj.value.length;
   };
 
   // moves cursor to specified position
   this.set_caret_pos = function(obj, pos)
   {
-    if (obj.setSelectionRange)
-      obj.setSelectionRange(pos, pos);
-    else if (obj.createTextRange) {
-      var range = obj.createTextRange();
-      range.collapse(true);
-      range.moveEnd('character', pos);
-      range.moveStart('character', pos);
-      range.select();
+    try {
+      if (obj.setSelectionRange)
+        obj.setSelectionRange(pos, pos);
     }
+    catch(e) {} // catch Firefox exception if obj is hidden
   };
 
   // get selected text from an input field
-  // http://stackoverflow.com/questions/7186586/how-to-get-the-selected-text-in-textarea-using-jquery-in-internet-explorer-7
   this.get_input_selection = function(obj)
   {
-    var start = 0, end = 0,
-      normalizedValue, range,
-      textInputRange, len, endRange;
+    var start = 0, end = 0, normalizedValue = '';
 
     if (typeof obj.selectionStart == "number" && typeof obj.selectionEnd == "number") {
       normalizedValue = obj.value;
       start = obj.selectionStart;
       end = obj.selectionEnd;
     }
-    else {
-      range = document.selection.createRange();
 
-      if (range && range.parentElement() == obj) {
-        len = obj.value.length;
-        normalizedValue = obj.value; //.replace(/\r\n/g, "\n");
-
-        // create a working TextRange that lives only in the input
-        textInputRange = obj.createTextRange();
-        textInputRange.moveToBookmark(range.getBookmark());
-
-        // Check if the start and end of the selection are at the very end
-        // of the input, since moveStart/moveEnd doesn't return what we want
-        // in those cases
-        endRange = obj.createTextRange();
-        endRange.collapse(false);
-
-        if (textInputRange.compareEndPoints("StartToEnd", endRange) > -1) {
-          start = end = len;
-        }
-        else {
-          start = -textInputRange.moveStart("character", -len);
-          start += normalizedValue.slice(0, start).split("\n").length - 1;
-
-          if (textInputRange.compareEndPoints("EndToEnd", endRange) > -1) {
-            end = len;
-          }
-          else {
-            end = -textInputRange.moveEnd("character", -len);
-            end += normalizedValue.slice(0, end).split("\n").length - 1;
-          }
-        }
-      }
-    }
-
-    return { start:start, end:end, text:normalizedValue.substr(start, end-start) };
+    return {start: start, end: end, text: normalizedValue.substr(start, end-start)};
   };
 
   // disable/enable all fields of a form
@@ -7731,9 +7808,7 @@
       // remember which elem was disabled before lock
       if (lock && elm.disabled)
         this.disabled_form_elements.push(elm);
-      // check this.disabled_form_elements before inArray() as a workaround for FF5 bug
-      // http://bugs.jquery.com/ticket/9873
-      else if (lock || (this.disabled_form_elements && $.inArray(elm, this.disabled_form_elements)<0))
+      else if (lock || $.inArray(elm, this.disabled_form_elements) < 0)
         elm.disabled = lock;
     }
   };
@@ -7750,25 +7825,23 @@
     }
     catch(e) {
       this.display_message(String(e), 'error');
-    };
+    }
   };
 
   this.check_protocol_handler = function(name, elem)
   {
     var nav = window.navigator;
+
     if (!nav || (typeof nav.registerProtocolHandler != 'function')) {
       $(elem).addClass('disabled').click(function(){ return false; });
     }
+    else if (typeof nav.isProtocolHandlerRegistered == 'function') {
+      var status = nav.isProtocolHandlerRegistered('mailto', this.mailto_handler_uri());
+      if (status)
+        $(elem).parent().find('.mailtoprotohandler-status').html(status);
+    }
     else {
-      var status = null;
-      if (typeof nav.isProtocolHandlerRegistered == 'function') {
-        status = nav.isProtocolHandlerRegistered('mailto', this.mailto_handler_uri());
-        if (status)
-          $(elem).parent().find('.mailtoprotohandler-status').html(status);
-      }
-      else {
-        $(elem).click(function() { rcmail.register_protocol_handler(name); return false; });
-      }
+      $(elem).click(function() { ref.register_protocol_handler(name); return false; });
     }
   };
 
@@ -7806,8 +7879,8 @@
   {
     var img = new Image();
 
-    img.onload = function() { rcmail.env.browser_capabilities.tif = 1; };
-    img.onerror = function() { rcmail.env.browser_capabilities.tif = 0; };
+    img.onload = function() { ref.env.browser_capabilities.tif = 1; };
+    img.onerror = function() { ref.env.browser_capabilities.tif = 0; };
     img.src = 'program/resources/blank.tif';
   };
 
@@ -7823,12 +7896,12 @@
 
     if (window.ActiveXObject) {
       try {
-        if (axObj = new ActiveXObject("AcroPDF.PDF"))
+        if (plugin = new ActiveXObject("AcroPDF.PDF"))
           return 1;
       }
       catch (e) {}
       try {
-        if (axObj = new ActiveXObject("PDF.PdfCtrl"))
+        if (plugin = new ActiveXObject("PDF.PdfCtrl"))
           return 1;
       }
       catch (e) {}
@@ -7856,7 +7929,7 @@
 
     if (window.ActiveXObject) {
       try {
-        if (axObj = new ActiveXObject("ShockwaveFlash.ShockwaveFlash"))
+        if (plugin = new ActiveXObject("ShockwaveFlash.ShockwaveFlash"))
           return 1;
       }
       catch (e) {}
@@ -7899,7 +7972,6 @@
   {
     return localStorage.removeItem(this.get_local_storage_prefix() + key);
   };
-
 }  // end object rcube_webmail
 
 

--
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