From be9aacaa5296dfca63fb3a01c2dc52538d1546aa Mon Sep 17 00:00:00 2001
From: Thomas Bruederli <thomas@roundcube.net>
Date: Sat, 17 Nov 2012 12:31:31 -0500
Subject: [PATCH] Bring back lost localization for the about page

---
 program/js/app.js | 1634 +++++++++++++++++++++++++++++++++++++--------------------
 1 files changed, 1,050 insertions(+), 584 deletions(-)

diff --git a/program/js/app.js b/program/js/app.js
index 53a67c7..810b154 100644
--- a/program/js/app.js
+++ b/program/js/app.js
@@ -17,13 +17,10 @@
  +-----------------------------------------------------------------------+
  | Requires: jquery.js, common.js, list.js                               |
  +-----------------------------------------------------------------------+
-
-  $Id$
 */
 
 function rcube_webmail()
 {
-  this.env = { recipients_separator:',', recipients_delimiter:', ' };
   this.labels = {};
   this.buttons = {};
   this.buttons_sel = {};
@@ -35,29 +32,35 @@
   this.messages = {};
   this.group2expand = {};
 
+  // webmail client settings
+  this.dblclick_time = 500;
+  this.message_time = 4000;
+  this.identifier_expr = new RegExp('[^0-9a-z\-_]', 'gi');
+
+  // environment defaults
+  this.env = {
+    request_timeout: 180,  // seconds
+    draft_autosave: 0,     // seconds
+    comm_path: './',
+    blankpage: 'program/resources/blank.gif',
+    recipients_separator: ',',
+    recipients_delimiter: ', '
+  };
+
   // create protected reference to myself
   this.ref = 'rcmail';
   var ref = this;
 
-  // webmail client settings
-  this.dblclick_time = 500;
-  this.message_time = 4000;
-
-  this.identifier_expr = new RegExp('[^0-9a-z\-_]', 'gi');
-
-  // default environment vars
-  this.env.keep_alive = 60;        // seconds
-  this.env.request_timeout = 180;  // seconds
-  this.env.draft_autosave = 0;     // seconds
-  this.env.comm_path = './';
-  this.env.blankpage = 'program/blank.gif';
-
   // set jQuery ajax options
   $.ajaxSetup({
-    cache:false,
-    error:function(request, status, err){ ref.http_error(request, status, err); },
-    beforeSend:function(xmlhttp){ xmlhttp.setRequestHeader('X-Roundcube-Request', ref.env.request_token); }
+    cache: false,
+    timeout: this.env.request_timeout * 1000,
+    error: function(request, status, err){ ref.http_error(request, status, err); },
+    beforeSend: function(xmlhttp){ xmlhttp.setRequestHeader('X-Roundcube-Request', ref.env.request_token); }
   });
+
+  // unload fix
+  $(window).bind('beforeunload', function() { rcmail.unload = true; });
 
   // set environment variable(s)
   this.set_env = function(p, value)
@@ -81,13 +84,14 @@
   // add a button to the button list
   this.register_button = function(command, id, type, act, sel, over)
   {
-    if (!this.buttons[command])
-      this.buttons[command] = [];
-
     var button_prop = {id:id, type:type};
+
     if (act) button_prop.act = act;
     if (sel) button_prop.sel = sel;
     if (over) button_prop.over = over;
+
+    if (!this.buttons[command])
+      this.buttons[command] = [];
 
     this.buttons[command].push(button_prop);
 
@@ -175,10 +179,10 @@
     }
 
     // enable general commands
-    this.enable_command('logout', 'mail', 'addressbook', 'settings', 'save-pref', 'compose', 'undo', 'about', 'switch-task', true);
+    this.enable_command('close', 'logout', 'mail', 'addressbook', 'settings', 'save-pref', 'compose', 'undo', 'about', 'switch-task', true);
 
     if (this.env.permaurl)
-      this.enable_command('permaurl', true);
+      this.enable_command('permaurl', 'extwin', true);
 
     switch (this.task) {
 
@@ -187,7 +191,6 @@
         this.enable_command('list', 'checkmail', 'add-contact', 'search', 'reset-search', 'collapse-folder', true);
 
         if (this.gui_objects.messagelist) {
-
           this.message_list = new rcube_list_widget(this.gui_objects.messagelist, {
             multiselect:true, multiexpand:true, draggable:true, keyboard:true,
             column_movable:this.env.col_movable, dblclick_time:this.dblclick_time
@@ -207,33 +210,30 @@
           this.gui_objects.messagelist.parentNode.onmousedown = function(e){ return p.click_on_list(e); };
 
           this.message_list.init();
-          this.enable_command('toggle_status', 'toggle_flag', 'menu-open', 'menu-save', true);
+          this.enable_command('toggle_status', 'toggle_flag', 'menu-open', 'menu-save', 'sort', true);
 
           // load messages
           this.command('list');
         }
 
         if (this.gui_objects.qsearchbox) {
-          if (this.env.search_text != null) {
+          if (this.env.search_text != null)
             this.gui_objects.qsearchbox.value = this.env.search_text;
-          }
           $(this.gui_objects.qsearchbox).focusin(function() { rcmail.message_list.blur(); });
         }
 
-        if (!this.env.flag_for_deletion && this.env.trash_mailbox && this.env.mailbox != this.env.trash_mailbox)
-          this.set_alttext('delete', 'movemessagetotrash');
+        this.set_button_titles();
 
         this.env.message_commands = ['show', 'reply', 'reply-all', 'reply-list', 'forward',
           'moveto', 'copy', 'delete', 'open', 'mark', 'edit', 'viewsource', 'download',
-          'print', 'load-attachment', 'load-headers', 'forward-attachment'];
+          'print', 'load-attachment', 'show-headers', 'hide-headers', 'forward-attachment'];
 
         if (this.env.action == 'show' || this.env.action == 'preview') {
           this.enable_command(this.env.message_commands, this.env.uid);
           this.enable_command('reply-list', this.env.list_post);
 
           if (this.env.action == 'show') {
-            this.http_request('pagenav', '_uid='+this.env.uid+'&_mbox='+urlencode(this.env.mailbox)
-              + (this.env.search_request ? '&_search='+this.env.search_request : ''),
+            this.http_request('pagenav', {_uid: this.env.uid, _mbox: this.env.mailbox, _search: this.env.search_request},
               this.display_message('', 'loading'));
           }
 
@@ -250,7 +250,7 @@
           }
         }
         else if (this.env.action == 'compose') {
-          this.env.compose_commands = ['send-attachment', 'remove-attachment', 'send', 'cancel', 'toggle-editor', 'list-adresses'];
+          this.env.compose_commands = ['send-attachment', 'remove-attachment', 'send', 'cancel', 'toggle-editor', 'list-adresses', 'extwin'];
 
           if (this.env.drafts_mailbox)
             this.env.compose_commands.push('savedraft')
@@ -274,7 +274,7 @@
         // show printing dialog
         else if (this.env.action == 'print' && this.env.uid)
           if (bw.safari)
-            window.setTimeout('window.print()', 10);
+            setTimeout('window.print()', 10);
           else
             window.print();
 
@@ -282,7 +282,7 @@
         if (this.gui_objects.mailboxlist) {
           this.env.unread_counts = {};
           this.gui_objects.folderlist = this.gui_objects.mailboxlist;
-          this.http_request('getunread', '');
+          this.http_request('getunread');
         }
 
         // init address book widget
@@ -301,12 +301,18 @@
 
         // ask user to send MDN
         if (this.env.mdn_request && this.env.uid) {
-          var mdnurl = '_uid='+this.env.uid+'&_mbox='+urlencode(this.env.mailbox);
-          if (confirm(this.get_label('mdnrequest')))
-            this.http_post('sendmdn', mdnurl);
-          else
-            this.http_post('mark', mdnurl+'&_flag=mdnsent');
+          var postact = 'sendmdn',
+            postdata = {_uid: this.env.uid, _mbox: this.env.mailbox};
+          if (!confirm(this.get_label('mdnrequest'))) {
+            postdata._flag = 'mdnsent';
+            postact = 'mark';
+          }
+          this.http_post(postact, postdata);
         }
+
+        // detect browser capabilities
+        if (!this.is_framed())
+          this.browser_capabilities_check();
 
         break;
 
@@ -318,7 +324,6 @@
         this.enable_command('list', 'listgroup', 'listsearch', 'advanced-search', true);
 
         if (this.gui_objects.contactslist) {
-
           this.contact_list = new rcube_list_widget(this.gui_objects.contactslist,
             {multiselect:true, draggable:this.gui_objects.folderlist?true:false, keyboard:true});
           this.contact_list.row_init = function(row){ p.triggerEvent('insertrow', { cid:row.uid, row:row }); };
@@ -334,9 +339,8 @@
 
           this.gui_objects.contactslist.parentNode.onmousedown = function(e){ return p.click_on_list(e); };
           document.onmouseup = function(e){ return p.doc_mouse_up(e); };
-          if (this.gui_objects.qsearchbox) {
+          if (this.gui_objects.qsearchbox)
             $(this.gui_objects.qsearchbox).focusin(function() { rcmail.contact_list.blur(); });
-          }
 
           this.update_group_commands();
           this.command('list');
@@ -360,9 +364,8 @@
               this.init_contact_form();
         }
 
-        if (this.gui_objects.qsearchbox) {
+        if (this.gui_objects.qsearchbox)
           this.enable_command('search', 'reset-search', 'moveto', true);
-        }
 
         break;
 
@@ -419,12 +422,14 @@
           $('#rcmloginpwd').focus();
 
         // detect client timezone
-        var dt = new Date(),
-          tz = dt.getTimezoneOffset() / -60,
-          stdtz = dt.getStdTimezoneOffset() / -60;
-
-        $('#rcmlogintz').val(stdtz);
-        $('#rcmlogindst').val(tz > stdtz ? 1 : 0);
+        if (window.jstz && !bw.ie6) {
+          var timezone = jstz.determine();
+          if (timezone.name())
+            $('#rcmlogintz').val(timezone.name());
+        }
+        else {
+          $('#rcmlogintz').val(new Date().getStdTimezoneOffset() / -60);
+        }
 
         // display 'loading' message on form submit, lock submit button
         $('form').submit(function () {
@@ -455,6 +460,14 @@
     if (this.gui_objects.folderlist)
       this.gui_containers.foldertray = $(this.gui_objects.folderlist);
 
+    // activate html5 file drop feature (if browser supports it and if configured)
+    if (this.gui_objects.filedrop && this.env.filedrop && ((window.XMLHttpRequest && XMLHttpRequest.prototype && XMLHttpRequest.prototype.sendAsBinary) || window.FormData)) {
+      $(document.body).bind('dragover dragleave drop', function(e){ return ref.document_drag_hover(e, e.type == 'dragover'); });
+      $(this.gui_objects.filedrop).addClass('droptarget')
+        .bind('dragover dragleave', function(e){ return ref.file_drag_hover(e, e.type == 'dragover'); })
+        .get(0).addEventListener('drop', function(e){ return ref.file_dropped(e); }, false);
+    }
+
     // trigger init event hook
     this.triggerEvent('init', { task:this.task, action:this.env.action });
 
@@ -467,7 +480,8 @@
         this.onloads[i]();
       }
 
-    // start keep-alive interval
+    // start keep-alive and refresh intervals
+    this.start_refresh();
     this.start_keepalive();
   };
 
@@ -482,7 +496,7 @@
   /*********************************************************/
 
   // execute a specific command on the web client
-  this.command = function(command, props, obj)
+  this.command = function(command, props, obj, event)
   {
     var ret, uid, cid, url, flag;
 
@@ -491,6 +505,11 @@
 
     if (this.busy)
       return false;
+
+    // let the browser handle this click (shift/ctrl usually opens the link in a new window/tab)
+    if ((obj && obj.href && String(obj.href).indexOf(location.href) < 0) && rcube_event.get_modifier(event)) {
+      return true;
+    }
 
     // command not supported or allowed
     if (!this.commands[command]) {
@@ -547,7 +566,7 @@
         break;
 
       case 'about':
-        location.href = '?_task=settings&_action=about';
+        this.redirect('?_task=settings&_action=about', false);
         break;
 
       case 'permaurl':
@@ -557,6 +576,19 @@
           parent.location.href = this.env.permaurl;
         break;
 
+      case 'extwin':
+        if (this.env.action == 'compose') {
+          var prevstate = this.env.compose_extwin;
+          $("input[name='_action']", this.gui_objects.messageform).val('compose');
+          this.gui_objects.messageform.action = this.url('mail/compose', { _id: this.env.compose_id, _extwin: 1 });
+          this.gui_objects.messageform.target = this.open_window('', 1150, 900);
+          this.gui_objects.messageform.submit();
+        }
+        else {
+          this.open_window(this.env.permaurl, 1000, 1200);
+        }
+        break;
+
       case 'menu-open':
       case 'menu-save':
         this.triggerEvent(command, {props:props});
@@ -564,35 +596,35 @@
 
       case 'open':
         if (uid = this.get_single_uid()) {
-          obj.href = '?_task='+this.env.task+'&_action=show&_mbox='+urlencode(this.env.mailbox)+'&_uid='+uid;
+          obj.href = this.url('show', {_mbox: this.env.mailbox, _uid: uid});
           return true;
         }
         break;
 
-      case 'list':
-        this.reset_qsearch();
-        if (this.task == 'mail') {
-          this.list_mailbox(props);
-
-          if (this.env.trash_mailbox && !this.env.flag_for_deletion)
-            this.set_alttext('delete', this.env.mailbox != this.env.trash_mailbox ? 'movemessagetotrash' : 'deletemessage');
-        }
-        else if (this.task == 'addressbook') {
-          this.list_contacts(props);
-        }
+      case 'close':
+        if (this.env.extwin)
+          window.close();
         break;
 
-      case 'load-headers':
-        this.load_headers(obj);
+      case 'list':
+        if (props && props != '')
+          this.reset_qsearch();
+        if (this.env.action == 'compose' && this.env.extwin)
+          window.close();
+        else if (this.task == 'mail') {
+          this.list_mailbox(props);
+          this.set_button_titles();
+        }
+        else if (this.task == 'addressbook')
+          this.list_contacts(props);
         break;
 
       case 'sort':
-        var sort_order, sort_col = props;
+        var sort_order = this.env.sort_order,
+          sort_col = !this.env.disabled_sort_col ? props : this.env.sort_col;
 
-        if (this.env.sort_col==sort_col)
-          sort_order = this.env.sort_order=='ASC' ? 'DESC' : 'ASC';
-        else
-          sort_order = 'ASC';
+        if (!this.env.disabled_sort_order)
+          sort_order = this.env.sort_col == sort_col && sort_order == 'ASC' ? 'DESC' : 'ASC';
 
         // set table header and update env
         this.set_list_sorting(sort_col, sort_order);
@@ -634,7 +666,7 @@
           uid = this.get_single_uid();
           if (uid && (!this.env.uid || uid != this.env.uid)) {
             if (this.env.mailbox == this.env.drafts_mailbox)
-              this.goto_url('compose', '_draft_uid='+uid+'&_mbox='+urlencode(this.env.mailbox), true);
+              this.open_compose_step({ _draft_uid: uid, _mbox: this.env.mailbox });
             else
               this.show_message(uid);
           }
@@ -656,13 +688,14 @@
         break;
 
       case 'edit':
-        if (this.task=='addressbook' && (cid = this.get_single_cid()))
+        if (this.task == 'addressbook' && (cid = this.get_single_cid()))
           this.load_contact(cid, 'edit');
-        else if (this.task=='settings' && props)
+        else if (this.task == 'settings' && props)
           this.load_identity(props, 'edit-identity');
-        else if (this.task=='mail' && (cid = this.get_single_uid())) {
-          url = (this.env.mailbox == this.env.drafts_mailbox) ? '_draft_uid=' : '_uid=';
-          this.goto_url('compose', url+cid+'&_mbox='+urlencode(this.env.mailbox), true);
+        else if (this.task == 'mail' && (cid = this.get_single_uid())) {
+          url = { _mbox: this.env.mailbox };
+          url[this.env.mailbox == this.env.drafts_mailbox && props != 'new' ? '_draft_uid' : '_uid'] = cid;
+          this.open_compose_step(url);
         }
         break;
 
@@ -707,7 +740,7 @@
       case 'delete':
         // mail task
         if (this.task == 'mail')
-          this.delete_messages();
+          this.delete_messages(event);
         // addressbook task
         else if (this.task == 'addressbook')
           this.delete_contacts();
@@ -745,9 +778,8 @@
           uid = props._row.uid;
 
           // toggle read/unread
-          if (this.message_list.rows[uid].deleted) {
+          if (this.message_list.rows[uid].deleted)
             flag = 'undelete';
-          }
           else if (!this.message_list.rows[uid].unread)
             flag = 'unread';
         }
@@ -766,14 +798,14 @@
           // toggle flagged/unflagged
           if (this.message_list.rows[uid].flagged)
             flag = 'unflagged';
-          }
+        }
         this.mark_message(flag, uid);
         break;
 
       case 'always-load':
         if (this.env.uid && this.env.sender) {
-          this.add_contact(urlencode(this.env.sender));
-          window.setTimeout(function(){ ref.command('load-images'); }, 300);
+          this.add_contact(this.env.sender);
+          setTimeout(function(){ ref.command('load-images'); }, 300);
           break;
         }
 
@@ -786,12 +818,12 @@
         var qstring = '_mbox='+urlencode(this.env.mailbox)+'&_uid='+this.env.uid+'&_part='+props.part;
 
         // open attachment in frame if it's of a supported mimetype
-        if (this.env.uid && props.mimetype && this.env.mimetypes && $.inArray(props.mimetype, this.env.mimetypes)>=0) {
+        if (this.env.uid && props.mimetype && this.env.mimetypes && $.inArray(props.mimetype, $.map(this.env.mimetypes, function(v,k){ return v })) >= 0) {
           if (props.mimetype == 'text/html')
             qstring += '&_safe=1';
           this.attachment_win = window.open(this.env.comm_path+'&_action=get&'+qstring+'&_frame=1', 'rcubemailattachment');
           if (this.attachment_win) {
-            window.setTimeout(function(){ ref.attachment_win.focus(); }, 10);
+            setTimeout(function(){ ref.attachment_win.focus(); }, 10);
             break;
           }
         }
@@ -842,7 +874,7 @@
 
       case 'previousmessage':
         if (this.env.prev_uid)
-          this.show_message(this.env.prev_uid, false, this.env.action=='preview');
+          this.show_message(this.env.prev_uid, false, this.env.action == 'preview');
         break;
 
       case 'firstmessage':
@@ -850,49 +882,47 @@
           this.show_message(this.env.first_uid);
         break;
 
-      case 'checkmail':
-        this.check_for_recent(true);
-        break;
-
       case 'compose':
-        url = this.url('mail/compose');
+        url = {};
 
         if (this.task == 'mail') {
-          url += '&_mbox='+urlencode(this.env.mailbox);
+          url._mbox = this.env.mailbox;
           if (props)
-             url += '&_to='+urlencode(props);
+             url._to = props;
+          // also send search request so we can go back to search result after message is sent
+          if (this.env.search_request)
+            url._search = this.env.search_request;
         }
         // modify url if we're in addressbook
         else if (this.task == 'addressbook') {
           // switch to mail compose step directly
           if (props && props.indexOf('@') > 0) {
-            url = this.get_task_url('mail', url);
-            this.redirect(url + '&_to='+urlencode(props));
+            url._to = props;
+          }
+          else {
+            // use contact_id passed as command parameter
+            var n, len, a_cids = [];
+            if (props)
+              a_cids.push(props);
+            // get selected contacts
+            else if (this.contact_list) {
+              var selection = this.contact_list.get_selection();
+              for (n=0, len=selection.length; n<len; n++)
+                a_cids.push(selection[n]);
+            }
+
+            if (a_cids.length)
+              this.http_post('mailto', { _cid: a_cids.join(','), _source: this.env.source }, true);
+            else if (this.env.group)
+              this.http_post('mailto', { _gid: this.env.group, _source: this.env.source }, true);
+
             break;
           }
-
-          // use contact_id passed as command parameter
-          var n, len, a_cids = [];
-          if (props)
-            a_cids.push(props);
-          // get selected contacts
-          else if (this.contact_list) {
-            var selection = this.contact_list.get_selection();
-            for (n=0, len=selection.length; n<len; n++)
-              a_cids.push(selection[n]);
-          }
-
-          if (a_cids.length)
-            this.http_post('mailto', { _cid: a_cids.join(','), _source: this.env.source}, true);
-          else if (this.env.group)
-            this.http_post('mailto', { _gid: this.env.group, _source: this.env.source}, true);
-
-          break;
         }
         else if (props)
-          url += '&_to='+urlencode(props);
+          url._to = props;
 
-        this.redirect(url);
+        this.open_compose_step(url);
         break;
 
       case 'spellcheck':
@@ -912,54 +942,31 @@
 
       case 'savedraft':
         // Reset the auto-save timer
-        self.clearTimeout(this.save_timer);
+        clearTimeout(this.save_timer);
 
-        if (!this.gui_objects.messageform)
+        // compose form did not change
+        if (this.cmp_hash == this.compose_field_hash()) {
+          this.auto_save_start();
           break;
+        }
 
-        // if saving Drafts is disabled in main.inc.php
-        // or if compose form did not change
-        if (!this.env.drafts_mailbox || this.cmp_hash == this.compose_field_hash())
-          break;
-
-        var form = this.gui_objects.messageform,
-          msgid = this.set_busy(true, 'savingmessage');
-
-        form.target = "savetarget";
-        form._draft.value = '1';
-        form.action = this.add_url(form.action, '_unlock', msgid);
-        form.submit();
+        this.submit_messageform(true);
         break;
 
       case 'send':
-        if (!this.gui_objects.messageform)
-          break;
-
         if (!props.nocheck && !this.check_compose_input(command))
           break;
 
         // Reset the auto-save timer
-        self.clearTimeout(this.save_timer);
+        clearTimeout(this.save_timer);
 
-        // all checks passed, send message
-        var lang = this.spellcheck_lang(),
-          form = this.gui_objects.messageform,
-          msgid = this.set_busy(true, 'sendingmessage');
-
-        form.target = 'savetarget';
-        form._draft.value = '';
-        form.action = this.add_url(form.action, '_unlock', msgid);
-        form.action = this.add_url(form.action, '_lang', lang);
-        form.submit();
-
-        // clear timeout (sending could take longer)
-        clearTimeout(this.request_timer);
+        this.submit_messageform();
         break;
 
       case 'send-attachment':
         // Reset the auto-save timer
-        self.clearTimeout(this.save_timer);
-        
+        clearTimeout(this.save_timer);
+
         this.upload_file(props || this.gui_objects.uploadform);
         break;
 
@@ -980,24 +987,24 @@
       case 'reply-list':
       case 'reply':
         if (uid = this.get_single_uid()) {
-          url = '_reply_uid='+uid+'&_mbox='+urlencode(this.env.mailbox);
+          url = {_reply_uid: uid, _mbox: this.env.mailbox};
           if (command == 'reply-all')
             // do reply-list, when list is detected and popup menu wasn't used 
-            url += '&_all=' + (!props && this.commands['reply-list'] ? 'list' : 'all');
+            url._all = (!props && this.commands['reply-list'] ? 'list' : 'all');
           else if (command == 'reply-list')
-            url += '&_all=list';
+            url._all = 'list';
 
-          this.goto_url('compose', url, true);
+          this.open_compose_step(url);
         }
         break;
 
       case 'forward-attachment':
       case 'forward':
         if (uid = this.get_single_uid()) {
-          url = '_forward_uid='+uid+'&_mbox='+urlencode(this.env.mailbox);
+          url = { _forward_uid: uid, _mbox: this.env.mailbox };
           if (command == 'forward-attachment' || (!props && this.env.forward_attachment))
-            url += '&_attachment=1';
-          this.goto_url('compose', url, true);
+            url._attachment = 1;
+          this.open_compose_step(url);
         }
         break;
 
@@ -1005,7 +1012,7 @@
         if (uid = this.get_single_uid()) {
           ref.printwin = window.open(this.env.comm_path+'&_action=print&_uid='+uid+'&_mbox='+urlencode(this.env.mailbox)+(this.env.safemode ? '&_safe=1' : ''));
           if (this.printwin) {
-            window.setTimeout(function(){ ref.printwin.focus(); }, 20);
+            setTimeout(function(){ ref.printwin.focus(); }, 20);
             if (this.env.action != 'show')
               this.mark_message('read', uid);
           }
@@ -1016,13 +1023,13 @@
         if (uid = this.get_single_uid()) {
           ref.sourcewin = window.open(this.env.comm_path+'&_action=viewsource&_uid='+uid+'&_mbox='+urlencode(this.env.mailbox));
           if (this.sourcewin)
-            window.setTimeout(function(){ ref.sourcewin.focus(); }, 20);
+            setTimeout(function(){ ref.sourcewin.focus(); }, 20);
           }
         break;
 
       case 'download':
         if (uid = this.get_single_uid())
-          this.goto_url('viewsource', '&_uid='+uid+'&_mbox='+urlencode(this.env.mailbox)+'&_save=1');
+          this.goto_url('viewsource', { _uid: uid, _mbox: this.env.mailbox, _save: 1 });
         break;
 
       // quicksearch
@@ -1075,7 +1082,7 @@
 
       case 'export':
         if (this.contact_list.rowcount > 0) {
-          this.goto_url('export', { _source:this.env.source, _gid:this.env.group, _search:this.env.search_request });
+          this.goto_url('export', { _source: this.env.source, _gid: this.env.group, _search: this.env.search_request });
         }
         break;
 
@@ -1102,7 +1109,7 @@
       default:
         var func = command.replace(/-/g, '_');
         if (this[func] && typeof this[func] === 'function') {
-          ret = this[func](props);
+          ret = this[func](props, obj);
         }
         break;
     }
@@ -1155,14 +1162,6 @@
     if (this.gui_objects.editform)
       this.lock_form(this.gui_objects.editform, a);
 
-    // clear pending timer
-    if (this.request_timer)
-      clearTimeout(this.request_timer);
-
-    // set timer for requests
-    if (a && this.env.request_timeout)
-      this.request_timer = window.setTimeout(function(){ ref.request_timed_out(); }, this.env.request_timeout * 1000);
-
     return id;
   };
 
@@ -1201,19 +1200,12 @@
     return url.replace(/_task=[a-z]+/, '_task='+task);
   };
 
-  // called when a request timed out
-  this.request_timed_out = function()
-  {
-    this.set_busy(false);
-    this.display_message('Request timed out!', 'error');
-  };
-
   this.reload = function(delay)
   {
     if (this.is_framed())
       parent.rcmail.reload(delay);
     else if (delay)
-      window.setTimeout(function(){ rcmail.reload(); }, delay);
+      setTimeout(function(){ rcmail.reload(); }, delay);
     else if (window.location)
       location.href = this.env.comm_path + (this.env.action ? '&_action='+this.env.action : '');
   };
@@ -1235,8 +1227,8 @@
 
       return url.replace(/(\?.*)$/, urldata);
     }
-    else
-      return url + '?' + name + '=' + value;
+
+    return url + '?' + name + '=' + value;
   };
 
   this.is_framed = function()
@@ -1346,7 +1338,7 @@
     this.env.last_folder_target = null;
 
     if (this.folder_auto_timer) {
-      window.clearTimeout(this.folder_auto_timer);
+      clearTimeout(this.folder_auto_timer);
       this.folder_auto_timer = null;
       this.folder_auto_expand = null;
     }
@@ -1399,15 +1391,15 @@
             // if the folder is collapsed, expand it after 1sec and restart the drag & drop process.
             if (div.hasClass('collapsed')) {
               if (this.folder_auto_timer)
-                window.clearTimeout(this.folder_auto_timer);
+                clearTimeout(this.folder_auto_timer);
 
               this.folder_auto_expand = this.env.mailboxes[k].id;
-              this.folder_auto_timer = window.setTimeout(function() {
+              this.folder_auto_timer = setTimeout(function() {
                 rcmail.command('collapse-folder', rcmail.folder_auto_expand);
                 rcmail.drag_start(null);
               }, 1000);
             } else if (this.folder_auto_timer) {
-              window.clearTimeout(this.folder_auto_timer);
+              clearTimeout(this.folder_auto_timer);
               this.folder_auto_timer = null;
               this.folder_auto_expand = null;
             }
@@ -1471,29 +1463,21 @@
 
   this.doc_mouse_up = function(e)
   {
-    var model, list, li, id;
+    var model, list, id;
 
     // ignore event if jquery UI dialog is open
     if ($(rcube_event.get_target(e)).closest('.ui-dialog, .ui-widget-overlay').length)
       return;
 
-    if (list = this.message_list) {
-      if (!rcube_mouse_is_over(e, list.list.parentNode))
-        list.blur();
-      else
-        list.focus();
+    if (list = this.message_list)
       model = this.env.mailboxes;
-    }
-    else if (list = this.contact_list) {
-      if (!rcube_mouse_is_over(e, list.list.parentNode))
-        list.blur();
-      else
-        list.focus();
+    else if (list = this.contact_list)
       model = this.env.contactfolders;
-    }
-    else if (this.ksearch_value) {
+    else if (this.ksearch_value)
       this.ksearch_blur();
-    }
+
+    if (list && !rcube_mouse_is_over(e, list.list.parentNode))
+      list.blur();
 
     // handle mouse release when dragging
     if (this.drag_active && model && this.env.last_folder_target) {
@@ -1559,7 +1543,7 @@
 
     // start timer for message preview (wait for double click)
     if (selected && this.env.contentframe && !list.multi_selecting && !this.dummy_select)
-      this.preview_timer = window.setTimeout(function(){ ref.msglist_get_preview(); }, 200);
+      this.preview_timer = setTimeout(function(){ ref.msglist_get_preview(); }, 200);
     else if (this.env.contentframe)
       this.show_contentframe(false);
   };
@@ -1570,14 +1554,17 @@
     if (list.multi_selecting || !this.env.contentframe)
       return;
 
-    if (list.get_single_selection() && window.frames && window.frames[this.env.contentframe]) {
-      if (window.frames[this.env.contentframe].location.href.indexOf(this.env.blankpage)>=0) {
-        if (this.preview_timer)
-          clearTimeout(this.preview_timer);
-        if (this.preview_read_timer)
-          clearTimeout(this.preview_read_timer);
-        this.preview_timer = window.setTimeout(function(){ ref.msglist_get_preview(); }, 200);
-      }
+    if (list.get_single_selection())
+      return;
+
+    var win = this.get_frame_window(this.env.contentframe);
+
+    if (win && win.location.href.indexOf(this.env.blankpage)>=0) {
+      if (this.preview_timer)
+        clearTimeout(this.preview_timer);
+      if (this.preview_read_timer)
+        clearTimeout(this.preview_read_timer);
+      this.preview_timer = setTimeout(function(){ ref.msglist_get_preview(); }, 200);
     }
   };
 
@@ -1591,7 +1578,7 @@
 
     var uid = list.get_single_selection();
     if (uid && this.env.mailbox == this.env.drafts_mailbox)
-      this.goto_url('compose', '_draft_uid='+uid+'&_mbox='+urlencode(this.env.mailbox), true);
+      this.open_compose_step({ _draft_uid: uid, _mbox: this.env.mailbox });
     else if (uid)
       this.show_message(uid, false, false);
   };
@@ -1636,7 +1623,7 @@
     for (i=0; i<cols.length; i++)
       if (cols[i].id && cols[i].id.match(/^rcm/)) {
         name = cols[i].id.replace(/^rcm/, '');
-        this.env.coltypes.push(name == 'to' ? 'from' : name);
+        this.env.coltypes.push(name);
       }
 
     if ((found = $.inArray('flag', this.env.coltypes)) >= 0)
@@ -1671,6 +1658,28 @@
     }
 
     return allow ? (copy ? 2 : 1) : 0;
+  };
+
+  this.open_window = function(url, width, height)
+  {
+    var w = Math.min(width, screen.width - 10),
+      h = Math.min(height, screen.height - 100),
+      l = (screen.width - w) / 2 + (screen.left || 0),
+      t = Math.max(0, (screen.height - h) / 2 + (screen.top || 0) - 20);
+
+    var wname = 'rcmextwin' + new Date().getTime(),
+      extwin = window.open(url + '&_extwin=1', wname, 'width='+w+',height='+h+',top='+t+',left='+l+',resizable=yes,toolbar=no,status=no');
+    extwin.moveTo(l,t);
+
+    // write loading... message to empty windows
+    if (!url && extwin.document) {
+      extwin.document.write('<html><body>' + this.get_label('loading') + '</body></html>');
+    }
+
+    // focus window, delayed to bring to front
+    window.setTimeout(function(){ extwin.focus(); }, 10);
+
+    return wname;
   };
 
 
@@ -1829,7 +1838,7 @@
         html = '<span id="flagicn'+uid+'" class="'+css_class+'">&nbsp;</span>';
       }
       else if (c == 'attachment') {
-        if (/application\/|multipart\/m/.test(flags.ctype))
+        if (/application\/|multipart\/(m|signed)/.test(flags.ctype))
           html = '<span class="attachment">&nbsp;</span>';
         else if (/multipart\/report/.test(flags.ctype))
           html = '<span class="report">&nbsp;</span>';
@@ -1850,8 +1859,11 @@
       else if (c == 'threads')
         html = expando;
       else if (c == 'subject') {
-        if (bw.ie)
+        if (bw.ie) {
           col.onmouseover = function() { rcube_webmail.long_subject_title_ie(this, message.depth+1); };
+          if (bw.ie8)
+            tree = '<span></span>' + tree; // #1487821
+        }
         html = tree + cols[c];
       }
       else if (c == 'priority') {
@@ -1891,7 +1903,7 @@
 
   this.set_list_options = function(cols, sort_col, sort_order, threads)
   {
-    var update, add_url = '';
+    var update, post_data = {};
 
     if (sort_col === undefined)
       sort_col = this.env.sort_col;
@@ -1905,14 +1917,14 @@
 
     if (this.env.threading != threads) {
       update = 1;
-      add_url += '&_threads=' + threads;
+      post_data._threads = threads;
     }
 
     if (cols && cols.length) {
       // make sure new columns are added at the end of the list
       var i, idx, name, newcols = [], oldcols = this.env.coltypes;
       for (i=0; i<oldcols.length; i++) {
-        name = oldcols[i] == 'to' ? 'from' : oldcols[i];
+        name = oldcols[i];
         idx = $.inArray(name, cols);
         if (idx != -1) {
           newcols.push(name);
@@ -1925,26 +1937,26 @@
 
       if (newcols.join() != oldcols.join()) {
         update = 1;
-        add_url += '&_cols=' + newcols.join(',');
+        post_data._cols = newcols.join(',');
       }
     }
 
     if (update)
-      this.list_mailbox('', '', sort_col+'_'+sort_order, add_url);
+      this.list_mailbox('', '', sort_col+'_'+sort_order, post_data);
   };
 
-  // when user doble-clicks on a row
+  // when user double-clicks on a row
   this.show_message = function(id, safe, preview)
   {
     if (!id)
       return;
 
-    var target = window,
+    var win, target = window,
       action = preview ? 'preview': 'show',
       url = '&_action='+action+'&_uid='+id+'&_mbox='+urlencode(this.env.mailbox);
 
-    if (preview && this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
-      target = window.frames[this.env.contentframe];
+    if (preview && (win = this.get_frame_window(this.env.contentframe))) {
+      target = win;
       url += '&_framed=1';
     }
 
@@ -1955,14 +1967,24 @@
     if (this.env.search_request)
       url += '&_search='+this.env.search_request;
 
-    if (action == 'preview' && String(target.location.href).indexOf(url) >= 0)
+    // add browser capabilities, so we can properly handle attachments
+    url += '&_caps='+urlencode(this.browser_capabilities());
+
+    if (this.env.extwin)
+      url += '&_extwin=1';
+
+    if (preview && String(target.location.href).indexOf(url) >= 0) {
       this.show_contentframe(true);
+    }
     else {
-      this.location_href(this.env.comm_path+url, target, true);
+      if (!preview && this.env.message_extwin && !this.env.extwin)
+        this.open_window(this.env.comm_path+url, 1000, 1200);
+      else
+        this.location_href(this.env.comm_path+url, target, true);
 
       // mark as read and change mbox unread counter
-      if (action == 'preview' && this.message_list && this.message_list.rows[id] && this.message_list.rows[id].unread && this.env.preview_pane_mark_read >= 0) {
-        this.preview_read_timer = window.setTimeout(function() {
+      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);
           ref.update_thread_root(id, 'read');
           if (ref.env.unread_counts[ref.env.mailbox]) {
@@ -1970,7 +1992,7 @@
             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.http_post('mark', {_uid: id, _flag: 'read', _quiet: 1});
         }, this.env.preview_pane_mark_read * 1000);
       }
     }
@@ -1978,18 +2000,35 @@
 
   this.show_contentframe = function(show)
   {
-    var frm, win;
-    if (this.env.contentframe && (frm = $('#'+this.env.contentframe)) && frm.length) {
-      if (!show && (win = window.frames[this.env.contentframe])) {
+    var frame, win, name = this.env.contentframe;
+
+    if (name && (frame = this.get_frame_element(name))) {
+      if (!show && (win = this.get_frame_window(name))) {
         if (win.location && win.location.href.indexOf(this.env.blankpage)<0)
           win.location.href = this.env.blankpage;
       }
       else if (!bw.safari && !bw.konq)
-        frm[show ? 'show' : 'hide']();
-      }
+        $(frame)[show ? 'show' : 'hide']();
+    }
 
     if (!show && this.busy)
       this.set_busy(false, null, this.env.frame_lock);
+  };
+
+  this.get_frame_element = function(id)
+  {
+    var frame;
+
+    if (id && (frame = document.getElementById(id)))
+      return frame;
+  };
+
+  this.get_frame_window = function(id)
+  {
+    var frame = this.get_frame_element(id);
+
+    if (frame && frame.name && window.frames)
+      return window.frames[frame.name];
   };
 
   this.lock_frame = function()
@@ -2020,6 +2059,15 @@
     }
   };
 
+  // sends request to check for recent messages
+  this.checkmail = function()
+  {
+    var lock = this.set_busy(true, 'checkingmail'),
+      params = this.check_recent_params();
+
+    this.http_request('check-recent', params, lock);
+  };
+
   // list messages of a specific mailbox using filter
   this.filter_mailbox = function(filter)
   {
@@ -2033,23 +2081,23 @@
   };
 
   // list messages of a specific mailbox
-  this.list_mailbox = function(mbox, page, sort, add_url)
+  this.list_mailbox = function(mbox, page, sort, url)
   {
-    var url = '', target = window;
+    var win, target = window;
+
+    if (typeof url != 'object')
+      url = {};
 
     if (!mbox)
       mbox = this.env.mailbox ? this.env.mailbox : 'INBOX';
 
-    if (add_url)
-      url += add_url;
-
     // add sort to url if set
     if (sort)
-      url += '&_sort=' + sort;
+      url._sort = sort;
 
     // also send search request to get the right messages
     if (this.env.search_request)
-      url += '&_search='+this.env.search_request;
+      url._search = this.env.search_request;
 
     // set page=1 if changeing to another mailbox
     if (this.env.mailbox != mbox) {
@@ -2062,7 +2110,7 @@
     this.clear_message_list();
 
     if (mbox != this.env.mailbox || (mbox == this.env.mailbox && !page && !sort))
-      url += '&_refresh=1';
+      url._refresh = 1;
 
     this.select_folder(mbox, '', true);
     this.unmark_folder(mbox, 'recent', '', true);
@@ -2074,15 +2122,18 @@
       return;
     }
 
-    if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
-      target = window.frames[this.env.contentframe];
-      url += '&_framed=1';
+    if (win = this.get_frame_window(this.env.contentframe)) {
+      target = win;
+      url._framed = 1;
     }
 
     // load message list to target frame/window
     if (mbox) {
       this.set_busy(true, 'loading');
-      this.location_href(this.env.comm_path+'&_mbox='+urlencode(mbox)+(page ? '&_page='+page : '')+url, target);
+      url._mbox = mbox;
+      if (page)
+        url._page = page;
+      this.location_href(url, target);
     }
   };
 
@@ -2097,15 +2148,20 @@
   };
 
   // send remote request to load message list
-  this.list_mailbox_remote = function(mbox, page, add_url)
+  this.list_mailbox_remote = function(mbox, page, post_data)
   {
     // clear message list first
     this.message_list.clear();
 
-    // send request to server
-    var url = '_mbox='+urlencode(mbox)+(page ? '&_page='+page : ''),
-      lock = this.set_busy(true, 'loading');
-    this.http_request('list', url+add_url, lock);
+    var lock = this.set_busy(true, 'loading');
+
+    if (typeof post_data != 'object')
+      post_data = {};
+    post_data._mbox = mbox;
+    if (page)
+      post_data._page = page;
+
+    this.http_request('list', post_data, lock);
   };
 
   // removes messages that doesn't exists from list selection array
@@ -2130,8 +2186,8 @@
 
     while (new_row) {
       if (new_row.nodeType == 1 && (r = this.message_list.rows[new_row.uid]) && r.unread_children) {
-	    this.message_list.expand_all(r);
-	    this.set_unread_children(r.uid);
+        this.message_list.expand_all(r);
+        this.set_unread_children(r.uid);
       }
       new_row = new_row.nextSibling;
     }
@@ -2316,38 +2372,38 @@
     row = row.obj.nextSibling;
     while (row) {
       if (row.nodeType == 1 && (r = rows[row.uid])) {
-	    if (!r.depth || r.depth <= depth)
-	      break;
+        if (!r.depth || r.depth <= depth)
+          break;
 
-	    r.depth--; // move left
+        r.depth--; // move left
         // reset width and clear the content of a tab, icons will be added later
-	    $('#rcmtab'+r.uid).width(r.depth * 15).html('');
+        $('#rcmtab'+r.uid).width(r.depth * 15).html('');
         if (!r.depth) { // a new root
-	      count++; // increase roots count
-	      r.parent_uid = 0;
-	      if (r.has_children) {
-	        // replace 'leaf' with 'collapsed'
-	        $('#rcmrow'+r.uid+' '+'.leaf:first')
+          count++; // increase roots count
+          r.parent_uid = 0;
+          if (r.has_children) {
+            // replace 'leaf' with 'collapsed'
+            $('#rcmrow'+r.uid+' '+'.leaf:first')
               .attr('id', 'rcmexpando' + r.uid)
-	          .attr('class', (r.obj.style.display != 'none' ? 'expanded' : 'collapsed'))
-    	      .bind('mousedown', {uid:r.uid, p:this},
-	            function(e) { return e.data.p.expand_message_row(e, e.data.uid); });
+              .attr('class', (r.obj.style.display != 'none' ? 'expanded' : 'collapsed'))
+              .bind('mousedown', {uid:r.uid, p:this},
+                function(e) { return e.data.p.expand_message_row(e, e.data.uid); });
 
-	        r.unread_children = 0;
-	        roots.push(r);
-	      }
-	      // show if it was hidden
-	      if (r.obj.style.display == 'none')
-	        $(r.obj).show();
-	    }
-	    else {
-	      if (r.depth == depth)
-	        r.parent_uid = parent;
-	      if (r.unread && roots.length)
-	        roots[roots.length-1].unread_children++;
-	    }
-	  }
-	  row = row.nextSibling;
+            r.unread_children = 0;
+            roots.push(r);
+          }
+          // show if it was hidden
+          if (r.obj.style.display == 'none')
+            $(r.obj).show();
+        }
+        else {
+          if (r.depth == depth)
+            r.parent_uid = parent;
+          if (r.unread && roots.length)
+            roots[roots.length-1].unread_children++;
+        }
+      }
+      row = row.nextSibling;
     }
 
     // update unread_children for roots
@@ -2366,13 +2422,13 @@
 
     while (row) {
       if (row.nodeType == 1 && (r = rows[row.uid])) {
-	    if (!r.depth && cnt)
-	      cnt--;
+        if (!r.depth && cnt)
+          cnt--;
 
         if (!cnt)
-	      this.message_list.remove_row(row.uid);
-	  }
-	  row = row.nextSibling;
+          this.message_list.remove_row(row.uid);
+      }
+      row = row.nextSibling;
     }
   };
 
@@ -2445,7 +2501,7 @@
   // set message row status, class and icon
   this.set_message = function(uid, flag, status)
   {
-    var row = this.message_list.rows[uid];
+    var row = this.message_list && this.message_list.rows[uid];
 
     if (!row)
       return false;
@@ -2498,23 +2554,23 @@
     if (!mbox || mbox == this.env.mailbox || (!this.env.uid && (!this.message_list || !this.message_list.get_selection().length)))
       return;
 
-    var a_uids = [],
+    var a_uids = [], n, selection,
       lock = this.display_message(this.get_label('copyingmessage'), 'loading'),
-      add_url = '&_target_mbox='+urlencode(mbox)+'&_from='+(this.env.action ? this.env.action : '');
+      post_data = {_mbox: this.env.mailbox, _target_mbox: mbox, _from: (this.env.action ? this.env.action : '')};
 
     if (this.env.uid)
       a_uids[0] = this.env.uid;
     else {
-      var selection = this.message_list.get_selection();
-      for (var n in selection) {
+      selection = this.message_list.get_selection();
+      for (n in selection) {
         a_uids.push(selection[n]);
       }
     }
 
-    add_url += '&_uid='+this.uids_to_list(a_uids);
+    post_data._uid = this.uids_to_list(a_uids);
 
     // send request to server
-    this.http_post('copy', '_mbox='+urlencode(this.env.mailbox)+add_url, lock);
+    this.http_post('copy', post_data, lock);
   };
 
   // move selected messages to the specified mailbox
@@ -2528,23 +2584,22 @@
       return;
 
     var lock = false,
-      add_url = '&_target_mbox='+urlencode(mbox)+'&_from='+(this.env.action ? this.env.action : '');
+      add_post = {_target_mbox: mbox, _from: (this.env.action ? this.env.action : '')};
 
     // show wait message
-    if (this.env.action == 'show') {
+    if (this.env.action == 'show')
       lock = this.set_busy(true, 'movingmessage');
-    }
     else
       this.show_contentframe(false);
 
     // Hide message command buttons until a message is selected
     this.enable_command(this.env.message_commands, false);
 
-    this._with_selected_messages('moveto', lock, add_url);
+    this._with_selected_messages('moveto', lock, add_post);
   };
 
   // delete selected messages from the current mailbox
-  this.delete_messages = function()
+  this.delete_messages = function(event)
   {
     var uid, i, len, trash = this.env.trash_mailbox,
       list = this.message_list,
@@ -2570,10 +2625,13 @@
     // @TODO: we should check if defined trash mailbox exists
     else if (!trash || this.env.mailbox == trash)
       this.permanently_remove_messages();
+    // we're in Junk folder and delete_junk is enabled
+    else if (this.env.delete_junk && this.env.junk_mailbox && this.env.mailbox == this.env.junk_mailbox)
+      this.permanently_remove_messages();
     // if there is a trash mailbox defined and we're not currently in it
     else {
       // if shift was pressed delete it immediately
-      if (list && list.modkey == SHIFT_KEY) {
+      if ((list && list.modkey == SHIFT_KEY) || (event && rcube_event.get_modifier(event) == SHIFT_KEY)) {
         if (confirm(this.get_label('deletemessagesconfirm')))
           this.permanently_remove_messages();
       }
@@ -2592,14 +2650,17 @@
       return;
 
     this.show_contentframe(false);
-    this._with_selected_messages('delete', false, '&_from='+(this.env.action ? this.env.action : ''));
+    this._with_selected_messages('delete', false, {_from: this.env.action ? this.env.action : ''});
   };
 
   // Send a specifc moveto/delete request with UIDs of all selected messages
   // @private
-  this._with_selected_messages = function(action, lock, add_url)
+  this._with_selected_messages = function(action, lock, post_data)
   {
-    var a_uids = [], count = 0, msg;
+    var a_uids = [], count = 0, msg, lock;
+
+    if (typeof(post_data) != 'object')
+      post_data = {};
 
     if (this.env.uid)
       a_uids[0] = this.env.uid;
@@ -2631,18 +2692,19 @@
 
     // also send search request to get the right messages
     if (this.env.search_request)
-      add_url += '&_search='+this.env.search_request;
+      post_data._search = this.env.search_request;
 
     if (this.env.display_next && this.env.next_uid)
-      add_url += '&_next_uid='+this.env.next_uid;
+      post_data._next_uid = this.env.next_uid;
 
     if (count < 0)
-      add_url += '&_count='+(count*-1);
-    else if (count > 0) 
-      // remove threads from the end of the list
+      post_data._count = (count*-1);
+    // remove threads from the end of the list
+    else if (count > 0)
       this.delete_excessive_thread_rows();
 
-    add_url += '&_uid='+this.uids_to_list(a_uids);
+    post_data._uid = this.uids_to_list(a_uids);
+    post_data._mbox = this.env.mailbox;
 
     if (!lock) {
       msg = action == 'moveto' ? 'movingmessage' : 'deletingmessage';
@@ -2650,40 +2712,43 @@
     }
 
     // send request to server
-    this.http_post(action, '_mbox='+urlencode(this.env.mailbox)+add_url, lock);
+    this.http_post(action, post_data, lock);
   };
 
   // set a specific flag to one or more messages
   this.mark_message = function(flag, uid)
   {
-    var a_uids = [], r_uids = [], len, n, id,
-      selection = this.message_list ? this.message_list.get_selection() : [];
+    var a_uids = [], r_uids = [], len, n, id, selection,
+      list = this.message_list;
 
     if (uid)
       a_uids[0] = uid;
     else if (this.env.uid)
       a_uids[0] = this.env.uid;
-    else if (this.message_list) {
+    else if (list) {
+      selection = list.get_selection();
       for (n=0, len=selection.length; n<len; n++) {
           a_uids.push(selection[n]);
       }
     }
 
-    if (!this.message_list)
+    if (!list)
       r_uids = a_uids;
-    else
+    else {
+      list.focus();
       for (n=0, len=a_uids.length; n<len; n++) {
         id = a_uids[n];
-        if ((flag=='read' && this.message_list.rows[id].unread) 
-            || (flag=='unread' && !this.message_list.rows[id].unread)
-            || (flag=='delete' && !this.message_list.rows[id].deleted)
-            || (flag=='undelete' && this.message_list.rows[id].deleted)
-            || (flag=='flagged' && !this.message_list.rows[id].flagged)
-            || (flag=='unflagged' && this.message_list.rows[id].flagged))
+        if ((flag=='read' && list.rows[id].unread) 
+            || (flag=='unread' && !list.rows[id].unread)
+            || (flag=='delete' && !list.rows[id].deleted)
+            || (flag=='undelete' && list.rows[id].deleted)
+            || (flag=='flagged' && !list.rows[id].flagged)
+            || (flag=='unflagged' && list.rows[id].flagged))
         {
           r_uids.push(id);
         }
       }
+    }
 
     // nothing to do
     if (!r_uids.length && !this.select_all_mode)
@@ -2709,7 +2774,7 @@
   this.toggle_read_status = function(flag, a_uids)
   {
     var i, len = a_uids.length,
-      url = '_uid='+this.uids_to_list(a_uids)+'&_flag='+flag,
+      post_data = {_uid: this.uids_to_list(a_uids), _flag: flag},
       lock = this.display_message(this.get_label('markingmessage'), 'loading');
 
     // mark all message rows as read/unread
@@ -2718,9 +2783,9 @@
 
     // also send search request to get the right messages
     if (this.env.search_request)
-      url += '&_search='+this.env.search_request;
+      post_data._search = this.env.search_request;
 
-    this.http_post('mark', url, lock);
+    this.http_post('mark', post_data, lock);
 
     for (i=0; i<len; i++)
       this.update_thread_root(a_uids[i], flag);
@@ -2730,7 +2795,7 @@
   this.toggle_flagged_status = function(flag, a_uids)
   {
     var i, len = a_uids.length,
-      url = '_uid='+this.uids_to_list(a_uids)+'&_flag='+flag,
+      post_data = {_uid: this.uids_to_list(a_uids), _flag: flag},
       lock = this.display_message(this.get_label('markingmessage'), 'loading');
 
     // mark all message rows as flagged/unflagged
@@ -2739,9 +2804,9 @@
 
     // also send search request to get the right messages
     if (this.env.search_request)
-      url += '&_search='+this.env.search_request;
+      post_data._search = this.env.search_request;
 
-    this.http_post('mark', url, lock);
+    this.http_post('mark', post_data, lock);
   };
 
   // mark all message rows as deleted/undeleted
@@ -2779,7 +2844,7 @@
   this.flag_as_undeleted = function(a_uids)
   {
     var i, len=a_uids.length,
-      url = '_uid='+this.uids_to_list(a_uids)+'&_flag=undelete',
+      post_data = {_uid: this.uids_to_list(a_uids), _flag: 'undelete'},
       lock = this.display_message(this.get_label('markingmessage'), 'loading');
 
     for (i=0; i<len; i++)
@@ -2787,16 +2852,17 @@
 
     // also send search request to get the right messages
     if (this.env.search_request)
-      url += '&_search='+this.env.search_request;
+      post_data._search = this.env.search_request;
 
-    this.http_post('mark', url, lock);
+    this.http_post('mark', post_data, lock);
     return true;
   };
 
   this.flag_as_deleted = function(a_uids)
   {
-    var add_url = '',
-      r_uids = [],
+    var r_uids = [],
+      post_data = {_uid: this.uids_to_list(a_uids), _flag: 'delete'},
+      lock = this.display_message(this.get_label('markingmessage'), 'loading'),
       rows = this.message_list ? this.message_list.rows : [],
       count = 0;
 
@@ -2806,12 +2872,12 @@
         if (rows[uid].unread)
           r_uids[r_uids.length] = uid;
 
-	    if (this.env.skip_deleted) {
-	      count += this.update_thread(uid);
+        if (this.env.skip_deleted) {
+          count += this.update_thread(uid);
           this.message_list.remove_row(uid, (this.env.display_next && i == this.message_list.selection.length-1));
-	    }
-	    else
-	      this.set_message(uid, 'deleted', true);
+        }
+        else
+          this.set_message(uid, 'deleted', true);
       }
     }
 
@@ -2820,29 +2886,27 @@
       if(!this.env.display_next)
         this.message_list.clear_selection();
       if (count < 0)
-        add_url += '&_count='+(count*-1);
+        post_data._count = (count*-1);
       else if (count > 0) 
         // remove threads from the end of the list
         this.delete_excessive_thread_rows();
     }
 
-    add_url = '&_from='+(this.env.action ? this.env.action : ''),
-      lock = this.display_message(this.get_label('markingmessage'), 'loading');
+    if (this.env.action)
+      post_data._from = this.env.action;
 
     // ??
     if (r_uids.length)
-      add_url += '&_ruid='+this.uids_to_list(r_uids);
+      post_data._ruid = this.uids_to_list(r_uids);
 
-    if (this.env.skip_deleted) {
-      if (this.env.display_next && this.env.next_uid)
-        add_url += '&_next_uid='+this.env.next_uid;
-    }
+    if (this.env.skip_deleted && this.env.display_next && this.env.next_uid)
+      post_data._next_uid = this.env.next_uid;
 
     // also send search request to get the right messages
     if (this.env.search_request)
-      add_url += '&_search='+this.env.search_request;
+      post_data._search = this.env.search_request;
 
-    this.http_post('mark', '_uid='+this.uids_to_list(a_uids)+'&_flag=delete'+add_url, lock);
+    this.http_post('mark', post_data, lock);
     return true;
   };
 
@@ -2869,6 +2933,19 @@
     return this.select_all_mode ? '*' : uids.join(',');
   };
 
+  // Sets title of the delete button
+  this.set_button_titles = function()
+  {
+    var label = 'deletemessage';
+
+    if (!this.env.flag_for_deletion
+      && this.env.trash_mailbox && this.env.mailbox != this.env.trash_mailbox
+      && (!this.env.delete_junk || !this.env.junk_mailbox || this.env.mailbox != this.env.junk_mailbox)
+    )
+      label = 'movemessagetotrash';
+
+    this.set_alttext('delete', label);
+  };
 
   /*********************************************************/
   /*********       mailbox folders methods         *********/
@@ -2876,24 +2953,23 @@
 
   this.expunge_mailbox = function(mbox)
   {
-    var lock, url = '_mbox='+urlencode(mbox);
+    var lock, post_data = {_mbox: mbox};
 
     // lock interface if it's the active mailbox
     if (mbox == this.env.mailbox) {
       lock = this.set_busy(true, 'loading');
-      url += '&_reload=1';
+      post_data._reload = 1;
       if (this.env.search_request)
-        url += '&_search='+this.env.search_request;
+        post_data._search = this.env.search_request;
     }
 
     // send request to server
-    this.http_post('expunge', url, lock);
+    this.http_post('expunge', post_data, lock);
   };
 
   this.purge_mailbox = function(mbox)
   {
-    var lock = false,
-      url = '_mbox='+urlencode(mbox);
+    var lock, post_data = {_mbox: mbox};
 
     if (!confirm(this.get_label('purgefolderconfirm')))
       return false;
@@ -2901,11 +2977,11 @@
     // lock interface if it's the active mailbox
     if (mbox == this.env.mailbox) {
        lock = this.set_busy(true, 'loading');
-       url += '&_reload=1';
+       post_data._reload = 1;
      }
 
     // send request to server
-    this.http_post('purge', url, lock);
+    this.http_post('purge', post_data, lock);
   };
 
   // test if purge command is allowed
@@ -2941,6 +3017,20 @@
   /*********        message compose methods        *********/
   /*********************************************************/
 
+  this.open_compose_step = function(p)
+  {
+    var url = this.url('mail/compose', p);
+
+    // open new compose window
+    if (this.env.compose_extwin && !this.env.extwin) {
+      this.open_window(url, 1150, 900);
+    }
+    else {
+      this.redirect(url);
+      window.resizeTo(Math.max(1150, $(window).width()), Math.max(900, $(window).height()));
+    }
+  };
+
   // init message compose form: set focus and eventhandlers
   this.init_messageform = function()
   {
@@ -2954,6 +3044,12 @@
       html_mode = $("input[name='_is_html']").val() == '1',
       ac_fields = ['cc', 'bcc', 'replyto', 'followupto'],
       ac_props;
+
+    // close compose step in opener
+    if (window.opener && opener.rcmail && opener.rcmail.env.action == 'compose') {
+      setTimeout(function(){ opener.history.back(); }, 100);
+      this.env.opened_extwin = true;
+    }
 
     // configure parallel autocompletion
     if (this.env.autocomplete_threads > 0) {
@@ -2973,7 +3069,7 @@
       this.set_caret_pos(input_message, this.env.top_posting ? 0 : $(input_message).val().length);
       // add signature according to selected identity
       // if we have HTML editor, signature is added in callback
-      if (input_from.prop('type') == 'select-one' && $("input[name='_draft_saveid']").val() == '') {
+      if (input_from.prop('type') == 'select-one' && !this.env.opened_extwin) {
         this.change_identity(input_from[0]);
       }
     }
@@ -3001,7 +3097,30 @@
     obj[bw.ie || bw.safari || bw.chrome ? 'keydown' : 'keypress'](function(e) { return ref.ksearch_keydown(e, this, props); })
       .attr('autocomplete', 'off');
   };
-  
+
+  this.submit_messageform = function(draft)
+  {
+    var form = this.gui_objects.messageform;
+
+    if (!form)
+      return;
+
+    // all checks passed, send message
+    var msgid = this.set_busy(true, draft ? 'savingmessage' : 'sendingmessage'),
+      lang = this.spellcheck_lang(),
+      files = [];
+
+    // send files list
+    $('li', this.gui_objects.attachmentlist).each(function() { files.push(this.id.replace(/^rcmfile/, '')); });
+    $('input[name="_attachments"]', form).val(files.join());
+
+    form.target = 'savetarget';
+    form._draft.value = draft ? '1' : '';
+    form.action = this.add_url(form.action, '_unlock', msgid);
+    form.action = this.add_url(form.action, '_lang', lang);
+    form.submit();
+  };
+
   this.compose_recipient_select = function(list)
   {
     this.enable_command('add-recipient', list.selection.length > 0);
@@ -3010,7 +3129,7 @@
   this.compose_add_recipient = function(field)
   {
     var recipients = [], input = $('#_'+field);
-    
+
     if (this.contact_list && this.contact_list.selection.length) {
       for (var id, n=0; n < this.contact_list.selection.length; n++) {
         id = this.contact_list.selection[n];
@@ -3021,7 +3140,7 @@
           if (id.charAt(0) == 'E' && this.env.contactdata[id].indexOf('@') < 0 && input.length) {
             var gid = id.substr(1);
             this.group2expand[gid] = { name:this.env.contactdata[id], input:input.get(0) };
-            this.http_request('group-expand', '_source='+urlencode(this.env.source)+'&_gid='+urlencode(gid), false);
+            this.http_request('group-expand', {_source: this.env.source, _gid: gid}, false);
           }
         }
       }
@@ -3126,7 +3245,7 @@
       tinyMCE.execCommand('mceAddControl', false, props.id);
 
       if (this.env.default_font)
-        window.setTimeout(function() {
+        setTimeout(function() {
           $(tinyMCE.get(props.id).getBody()).css('font-family', rcmail.env.default_font);
         }, 500);
     }
@@ -3225,7 +3344,7 @@
   this.auto_save_start = function()
   {
     if (this.env.draft_autosave)
-      this.save_timer = self.setTimeout(function(){ ref.command("savedraft"); }, this.env.draft_autosave * 1000);
+      this.save_timer = setTimeout(function(){ ref.command("savedraft"); }, this.env.draft_autosave * 1000);
 
     // Unlock interface now that saving is complete
     this.busy = false;
@@ -3234,20 +3353,11 @@
   this.compose_field_hash = function(save)
   {
     // check input fields
-    var ed, str = '',
-      value_to = $("[name='_to']").val(),
-      value_cc = $("[name='_cc']").val(),
-      value_bcc = $("[name='_bcc']").val(),
-      value_subject = $("[name='_subject']").val();
+    var ed, i, val, str = '', hash_fields = ['to', 'cc', 'bcc', 'subject'];
 
-    if (value_to)
-      str += value_to+':';
-    if (value_cc)
-      str += value_cc+':';
-    if (value_bcc)
-      str += value_bcc+':';
-    if (value_subject)
-      str += value_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();
@@ -3277,8 +3387,7 @@
       input_message = $("[name='_message']"),
       message = input_message.val(),
       is_html = ($("input[name='_is_html']").val() == '1'),
-      sig = this.env.identity,
-      sig_separator = this.env.sig_above && (this.env.compose_mode == 'reply' || this.env.compose_mode == 'forward') ? '---' : '-- ';
+      sig = this.env.identity;
 
     // enable manual signature insert
     if (this.env.signatures && this.env.signatures[id]) {
@@ -3291,12 +3400,8 @@
     if (!is_html) {
       // remove the 'old' signature
       if (show_sig && sig && this.env.signatures && this.env.signatures[sig]) {
-
-        sig = this.env.signatures[sig].is_html ? this.env.signatures[sig].plain_text : this.env.signatures[sig].text;
+        sig = this.env.signatures[sig].text;
         sig = sig.replace(/\r\n/g, '\n');
-
-        if (!sig.match(/^--[ -]\n/m))
-          sig = sig_separator + '\n' + sig;
 
         p = this.env.sig_above ? message.indexOf(sig) : message.lastIndexOf(sig);
         if (p >= 0)
@@ -3304,16 +3409,17 @@
       }
       // add the new signature string
       if (show_sig && this.env.signatures && this.env.signatures[id]) {
-        sig = this.env.signatures[id]['is_html'] ? this.env.signatures[id]['plain_text'] : this.env.signatures[id]['text'];
+        sig = this.env.signatures[id].text;
         sig = sig.replace(/\r\n/g, '\n');
-
-        if (!sig.match(/^--[ -]\n/m))
-          sig = sig_separator + '\n' + sig;
 
         if (this.env.sig_above) {
           if (p >= 0) { // in place of removed signature
             message = message.substring(0, p) + sig + message.substring(p, message.length);
             cursor_pos = p - 1;
+          }
+          else if (!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);
@@ -3373,21 +3479,8 @@
         }
       }
 
-      if (this.env.signatures[id]) {
-        if (this.env.signatures[id].is_html) {
-          sig = this.env.signatures[id].text;
-          if (!this.env.signatures[id].plain_text.match(/^--[ -]\r?\n/m))
-            sig = sig_separator + '<br />' + sig;
-        }
-        else {
-          sig = this.env.signatures[id].text;
-          if (!sig.match(/^--[ -]\r?\n/m))
-            sig = sig_separator + '\n' + sig;
-          sig = '<pre>' + sig + '</pre>';
-        }
-
-        sigElem.innerHTML = sig;
-      }
+      if (this.env.signatures[id])
+        sigElem.innerHTML = this.env.signatures[id].html;
     }
 
     this.env.identity = id;
@@ -3441,11 +3534,7 @@
       var content = '<span>' + this.get_label('uploading' + (files > 1 ? 'many' : '')) + '</span>',
         ts = frame_name.replace(/^rcmupload/, '');
 
-      if (this.env.loadingicon)
-        content = '<img src="'+this.env.loadingicon+'" alt="" class="uploading" />'+content;
-      if (this.env.cancelicon)
-        content = '<a title="'+this.get_label('cancel')+'" onclick="return rcmail.cancel_attachment_upload(\''+ts+'\', \''+frame_name+'\');" href="#cancelupload" class="cancelupload"><img src="'+this.env.cancelicon+'" alt="" /></a>'+content;
-      this.add2attachment_list(ts, { name:'', html:content, classname:'uploading', complete:false });
+      this.add2attachment_list(ts, { name:'', html:content, classname:'uploading', frame:frame_name, complete:false });
 
       // upload progress support
       if (this.env.upload_progress_time) {
@@ -3464,6 +3553,13 @@
   {
     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 && att.frame)
+      att.html = '<a title="'+this.get_label('cancel')+'" onclick="return rcmail.cancel_attachment_upload(\''+name+'\', \''+att.frame+'\');" href="#cancelupload" class="cancelupload">'
+        + (this.env.cancelicon ? '<img src="'+this.env.cancelicon+'" alt="" />' : this.get_label('cancel')) + '</a>' + att.html;
 
     var indicator, li = $('<li>').attr('id', name).addClass(att.classname).html(att.html);
 
@@ -3509,7 +3605,7 @@
 
   this.upload_progress_start = function(action, name)
   {
-    window.setTimeout(function() { rcmail.http_request(action, {_progress: name}); },
+    setTimeout(function() { rcmail.http_request(action, {_progress: name}); },
       this.env.upload_progress_time * 1000);
   };
 
@@ -3530,7 +3626,7 @@
   this.add_contact = function(value)
   {
     if (value)
-      this.http_post('addcontact', '_address='+value);
+      this.http_post('addcontact', {_address: value});
 
     return true;
   };
@@ -3539,18 +3635,23 @@
   this.qsearch = function(value)
   {
     if (value != '') {
-      var n, lock = this.set_busy(true, 'searching');
+      var r, lock = this.set_busy(true, 'searching'),
+        url = this.search_params(value);
 
       if (this.message_list)
         this.clear_message_list();
       else if (this.contact_list)
         this.list_contacts_clear();
 
+      if (this.env.source)
+        url._source = this.env.source;
+      if (this.env.group)
+        url._gid = this.env.group;
+
       // reset vars
       this.env.current_page = 1;
-      r = this.http_request('search', this.search_params(value)
-        + (this.env.source ? '&_source='+urlencode(this.env.source) : '')
-        + (this.env.group ? '&_gid='+urlencode(this.env.group) : ''), lock);
+
+      r = this.http_request('search', url, lock);
 
       this.env.qsearch = {lock: lock, request: r};
     }
@@ -3559,7 +3660,7 @@
   // build URL params for search
   this.search_params = function(search, filter)
   {
-    var n, url = [], mods_arr = [],
+    var n, url = {}, mods_arr = [],
       mods = this.env.search_mods,
       mbox = this.env.mailbox;
 
@@ -3570,10 +3671,10 @@
       search = this.gui_objects.qsearchbox.value;
 
     if (filter)
-      url.push('_filter=' + urlencode(filter));
+      url._filter = filter;
 
     if (search) {
-      url.push('_q='+urlencode(search));
+      url._q = search;
 
       if (mods && this.message_list)
         mods = mods[mbox] ? mods[mbox] : mods['*'];
@@ -3581,14 +3682,14 @@
       if (mods) {
         for (n in mods)
           mods_arr.push(n);
-        url.push('_headers='+mods_arr.join(','));
+        url._headers = mods_arr.join(',');
       }
     }
 
     if (mbox)
-      url.push('_mbox='+urlencode(mbox));
+      url._mbox = mbox;
 
-    return url.join('&');
+    return url;
   };
 
   // reset quick-search form
@@ -3608,8 +3709,16 @@
   this.sent_successfully = function(type, msg)
   {
     this.display_message(msg, type);
-    // before redirect we need to wait some time for Chrome (#1486177)
-    window.setTimeout(function(){ ref.list_mailbox(); }, 500);
+
+    if (this.env.extwin && window.opener && opener.rcmail) {
+      this.lock_form(this.gui_objects.messageform);
+      opener.rcmail.display_message(msg, type);
+      setTimeout(function(){ window.close() }, 1000);
+    }
+    else {
+      // before redirect we need to wait some time for Chrome (#1486177)
+      setTimeout(function(){ ref.list_mailbox(); }, 500);
+    }
   };
 
 
@@ -3667,11 +3776,11 @@
       case 37:  // left
       case 39:  // right
         if (mod != SHIFT_KEY)
-	      return;
+          return;
     }
 
     // start timer
-    this.ksearch_timer = window.setTimeout(function(){ ref.ksearch_get_results(props); }, 200);
+    this.ksearch_timer = setTimeout(function(){ ref.ksearch_get_results(props); }, 200);
     this.ksearch_input = obj;
 
     return true;
@@ -3716,7 +3825,7 @@
     if (typeof this.env.contacts[id] === 'object' && this.env.contacts[id].id) {
       insert += this.env.contacts[id].name + this.env.recipients_delimiter;
       this.group2expand[this.env.contacts[id].id] = $.extend({ input: this.ksearch_input }, this.env.contacts[id]);
-      this.http_request('mail/group-expand', '_source='+urlencode(this.env.contacts[id].source)+'&_gid='+urlencode(this.env.contacts[id].id), false);
+      this.http_request('mail/group-expand', {_source: this.env.contacts[id].source, _gid: this.env.contacts[id].id}, false);
     }
     else if (typeof this.env.contacts[id] === 'string') {
       insert = this.env.contacts[id] + this.env.recipients_delimiter;
@@ -3786,10 +3895,11 @@
       return;
 
     // ...new search value contains old one and previous search was not finished or its result was empty
-    if (old_value && old_value.length && q.indexOf(old_value) == 0 && (!ac || !ac.num) && this.env.contacts && !this.env.contacts.length)
+    if (old_value && old_value.length && q.indexOf(old_value) == 0 && (!ac || ac.num <= 0) && this.env.contacts && !this.env.contacts.length)
       return;
 
     var i, lock, source, xhr, reqid = new Date().getTime(),
+      post_data = {_search: q, _id: reqid},
       threads = props && props.threads ? props.threads : 1,
       sources = props && props.sources ? props.sources : [],
       action = props && props.action ? props.action : 'mail/autocomplete';
@@ -3799,12 +3909,12 @@
 
     for (i=0; i<threads; i++) {
       source = this.ksearch_data.sources.shift();
-      if (threads > 1 && source === null)
+      if (threads > 1 && source === undefined)
         break;
 
+      post_data._source = source ? source : '';
       lock = this.display_message(this.get_label('searching'), 'loading');
-      xhr = this.http_post(action, '_search='+urlencode(q)+'&_id='+reqid
-        + (source ? '&_source='+urlencode(source) : ''), lock);
+      xhr = this.http_post(action, post_data, lock);
 
       this.ksearch_data.locks.push(lock);
       this.ksearch_data.requests.push(xhr);
@@ -3882,11 +3992,11 @@
     if (data.id == reqid) {
       data.num--;
       if (maxlen > 0 && data.sources.length) {
-        var lock, xhr, source = data.sources.shift();
+        var lock, xhr, source = data.sources.shift(), post_data;
         if (source) {
+          post_data = {_search: value, _id: reqid, _source: source};
           lock = this.display_message(this.get_label('searching'), 'loading');
-          xhr = this.http_post(data.action, '_search='+urlencode(value)+'&_id='+reqid
-            +'&_source='+urlencode(source), lock);
+          xhr = this.http_post(data.action, post_data, lock);
 
           this.ksearch_data.locks.push(lock);
           this.ksearch_data.requests.push(xhr);
@@ -3978,7 +4088,7 @@
       source = this.env.source ? this.env.address_sources[this.env.source] : null;
 
     if (id = list.get_single_selection())
-      this.preview_timer = window.setTimeout(function(){ ref.load_contact(id, 'show'); }, 200);
+      this.preview_timer = setTimeout(function(){ ref.load_contact(id, 'show'); }, 200);
     else if (this.env.contentframe)
       this.show_contentframe(false);
 
@@ -3999,6 +4109,9 @@
       }
     }
 
+    // if a group is currently selected, and there is at least one contact selected
+    // thend we can enable the group-remove-selected command
+    this.enable_command('group-remove-selected', this.env.group && list.selection.length > 0);
     this.enable_command('compose', this.env.group || list.selection.length > 0);
     this.enable_command('edit', id && writable);
     this.enable_command('delete', list.selection.length && writable);
@@ -4008,7 +4121,7 @@
 
   this.list_contacts = function(src, group, page)
   {
-    var folder, add_url = '',
+    var win, folder, url = {},
       target = window;
 
     if (!src)
@@ -4040,22 +4153,24 @@
       return;
     }
 
-    if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
-      target = window.frames[this.env.contentframe];
-      add_url = '&_framed=1';
+    if (win = this.get_frame_window(this.env.contentframe)) {
+      target = win;
+      url._framed = 1;
     }
 
     if (group)
-      add_url += '&_gid='+group;
+      url._gid = group;
     if (page)
-      add_url += '&_page='+page;
+      url._page = page;
+    if (src)
+      url._source = src;
 
     // also send search request to get the correct listing
     if (this.env.search_request)
-      add_url += '&_search='+this.env.search_request;
+      url._search = this.env.search_request;
 
     this.set_busy(true, 'loading');
-    this.location_href(this.env.comm_path + (src ? '&_source='+urlencode(src) : '') + add_url, target);
+    this.location_href(url, target);
   };
 
   // send remote request to load contacts list
@@ -4065,18 +4180,21 @@
     this.list_contacts_clear();
 
     // send request to server
-    var url = (src ? '_source='+urlencode(src) : '') + (page ? (src?'&':'') + '_page='+page : ''),
-      lock = this.set_busy(true, 'loading');
+    var url = {}, lock = this.set_busy(true, 'loading');
+
+    if (src)
+      url._source = src;
+    if (page)
+      url._page = page;
+    if (group)
+      url._gid = group;
 
     this.env.source = src;
     this.env.group = group;
 
-    if (group)
-      url += '&_gid='+group;
-
     // also send search request to get the right messages
     if (this.env.search_request)
-      url += '&_search='+this.env.search_request;
+      url._search = this.env.search_request;
 
     this.http_request(this.env.task == 'mail' ? 'list-contacts' : 'list', url, lock);
   };
@@ -4092,11 +4210,11 @@
   // load contact record
   this.load_contact = function(cid, action, framed)
   {
-    var add_url = '', target = window;
+    var win, url = {}, target = window;
 
-    if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
-      add_url = '&_framed=1';
-      target = window.frames[this.env.contentframe];
+    if (win = this.get_frame_window(this.env.contentframe)) {
+      url._framed = 1;
+      target = win;
       this.show_contentframe(true);
 
       // load dummy content
@@ -4111,12 +4229,15 @@
 
     if (action && (cid || action=='add') && !this.drag_active) {
       if (this.env.group)
-        add_url += '&_gid='+urlencode(this.env.group);
+        url._gid = this.env.group;
 
-      this.location_href(this.env.comm_path+'&_action='+action
-        +'&_source='+urlencode(this.env.source)
-        +'&_cid='+urlencode(cid) + add_url, target, true);
+      url._action = action;
+      url._source = this.env.source;
+      url._cid = cid;
+
+      this.location_href(url, target, true);
     }
+
     return true;
   };
 
@@ -4124,11 +4245,11 @@
   this.group_member_change = function(what, cid, source, gid)
   {
     what = what == 'add' ? 'add' : 'del';
-    var lock = this.display_message(this.get_label(what == 'add' ? 'addingmember' : 'removingmember'), 'loading');
+    var label = this.get_label(what == 'add' ? 'addingmember' : 'removingmember'),
+      lock = this.display_message(label, 'loading'),
+      post_data = {_cid: cid, _source: source, _gid: gid};
 
-    this.http_post('group-'+what+'members', '_cid='+urlencode(cid)
-      + '&_source='+urlencode(source)
-      + '&_gid='+urlencode(gid), lock);
+    this.http_post('group-'+what+'members', post_data, lock);
   };
 
   // copy a contact to the specified target (group or directory)
@@ -4140,19 +4261,18 @@
     if (to.type == 'group' && to.source == this.env.source)
       this.group_member_change('add', cid, to.source, to.id);
     else if (to.type == 'group' && !this.env.address_sources[to.source].readonly) {
-      var lock = this.display_message(this.get_label('copyingcontact'), 'loading');
-      this.http_post('copy', '_cid='+urlencode(cid)
-        + '&_source='+urlencode(this.env.source)
-        + '&_to='+urlencode(to.source)
-        + '&_togid='+urlencode(to.id)
-        + (this.env.group ? '&_gid='+urlencode(this.env.group) : ''), lock);
+      var lock = this.display_message(this.get_label('copyingcontact'), 'loading'),
+        post_data = {_cid: cid, _source: this.env.source, _to: to.source, _togid: to.id,
+          _gid: (this.env.group ? this.env.group : '')};
+
+      this.http_post('copy', post_data, lock);
     }
     else if (to.id != this.env.source && cid && this.env.address_sources[to.id] && !this.env.address_sources[to.id].readonly) {
-      var lock = this.display_message(this.get_label('copyingcontact'), 'loading');
-      this.http_post('copy', '_cid='+urlencode(cid)
-        + '&_source='+urlencode(this.env.source)
-        + '&_to='+urlencode(to.id)
-        + (this.env.group ? '&_gid='+urlencode(this.env.group) : ''), lock);
+      var lock = this.display_message(this.get_label('copyingcontact'), 'loading'),
+        post_data = {_cid: cid, _source: this.env.source, _to: to.id,
+          _gid: (this.env.group ? this.env.group : '')};
+
+      this.http_post('copy', post_data, lock);
     }
   };
 
@@ -4165,7 +4285,9 @@
     if (!(selection.length || this.env.cid) || (!undelete && !confirm(this.get_label('deletecontactconfirm'))))
       return;
 
-    var id, n, a_cids = [], qs = '';
+    var id, n, a_cids = [],
+      post_data = {_source: this.env.source, _from: (this.env.action ? this.env.action : '')},
+      lock = this.display_message(this.get_label('contactdeleting'), 'loading');
 
     if (this.env.cid)
       a_cids.push(this.env.cid);
@@ -4181,18 +4303,17 @@
         this.show_contentframe(false);
     }
 
+    post_data._cid = a_cids.join(',');
+
     if (this.env.group)
-      qs += '&_gid='+urlencode(this.env.group);
+      post_data._gid = this.env.group;
 
     // also send search request to get the right records from the next page
     if (this.env.search_request)
-      qs += '&_search='+this.env.search_request;
+      post_data._search = this.env.search_request;
 
     // send request to server
-    this.http_post('delete', '_cid='+urlencode(a_cids.join(','))
-      +'&_source='+urlencode(this.env.source)
-      +'&_from='+(this.env.action ? this.env.action : '')+qs,
-      this.display_message(this.get_label('contactdeleting'), 'loading'));
+    this.http_post('delete', post_data, lock)
 
     return true;
   };
@@ -4234,7 +4355,7 @@
     if (!this.gui_objects.contactslist)
       return false;
 
-    var c, list = this.contact_list,
+    var c, col, list = this.contact_list,
       row = document.createElement('tr');
 
     row.id = 'rcmrow'+this.html_identifier(cid);
@@ -4321,7 +4442,7 @@
   {
     if (this.env.group && confirm(this.get_label('deletegroupconfirm'))) {
       var lock = this.set_busy(true, 'groupdeleting');
-      this.http_post('group-delete', '_source='+urlencode(this.env.source)+'&_gid='+urlencode(this.env.group), lock);
+      this.http_post('group-delete', {_source: this.env.source, _gid: this.env.group}, lock);
     }
   };
 
@@ -4358,6 +4479,25 @@
     this.name_input.select().focus();
   };
 
+  //remove selected contacts from current active group
+  this.group_remove_selected = function()
+  {
+    ref.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)){
+      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)
   {
@@ -4372,11 +4512,11 @@
         var lock = this.set_busy(true, 'loading');
 
         if (itype == 'contactsearch')
-          this.http_post('search-create', '_search='+urlencode(this.env.search_request)+'&_name='+urlencode(newname), lock);
+          this.http_post('search-create', {_search: this.env.search_request, _name: newname}, lock);
         else if (this.env.group_renaming)
-          this.http_post('group-rename', '_source='+urlencode(this.env.source)+'&_gid='+urlencode(this.env.group)+'&_name='+urlencode(newname), lock);
+          this.http_post('group-rename', {_source: this.env.source, _gid: this.env.group, _name: newname}, lock);
         else
-          this.http_post('group-create', '_source='+urlencode(this.env.source)+'&_name='+urlencode(newname), lock);
+          this.http_post('group-create', {_source: this.env.source, _name: newname}, lock);
       }
       return false;
     }
@@ -4502,10 +4642,13 @@
 
   this.init_edit_field = function(col, elem)
   {
+    var label = this.env.coltypes[col].label;
+
     if (!elem)
       elem = $('.ff_' + col);
 
-    elem.placeholder(ref.env.coltypes[col].label);
+    if (label)
+      elem.placeholder(label);
   };
 
   this.insert_edit_field = function(col, section, menu)
@@ -4520,8 +4663,15 @@
       var lastelem = $('.ff_'+col),
         appendcontainer = $('#contactsection'+section+' .contactcontroller'+col);
 
-      if (!appendcontainer.length)
-        appendcontainer = $('<fieldset>').addClass('contactfieldgroup contactcontroller'+col).insertAfter($('#contactsection'+section+' .contactfieldgroup').last());
+      if (!appendcontainer.length) {
+        var sect = $('#contactsection'+section),
+          lastgroup = $('.contactfieldgroup', sect).last();
+        appendcontainer = $('<fieldset>').addClass('contactfieldgroup contactcontroller'+col);
+        if (lastgroup.length)
+          appendcontainer.insertAfter(lastgroup);
+        else
+          sect.prepend(appendcontainer);
+      }
 
       if (appendcontainer.length && appendcontainer.get(0).nodeName == 'FIELDSET') {
         var input, colprop = this.env.coltypes[col],
@@ -4545,6 +4695,14 @@
 
           if (colprop.type == 'date' && $.datepicker)
             input.datepicker();
+        }
+        else if (colprop.type == 'textarea') {
+          input = $('<textarea>')
+            .addClass('ff_'+col)
+            .attr({ name: '_'+col+name_suffix, cols:colprop.size, rows:colprop.rows })
+            .appendTo(cell);
+
+          this.init_edit_field(col, input);
         }
         else if (colprop.type == 'composite') {
           var childcol, cp, first, templ, cols = [], suffices = [];
@@ -4637,11 +4795,11 @@
   {
     if (form && form.elements._photo.value) {
       this.async_upload_form(form, 'upload-photo', function(e) {
-        rcmail.set_busy(false, null, rcmail.photo_upload_id);
+        rcmail.set_busy(false, null, rcmail.file_upload_id);
       });
 
       // display upload indicator
-      this.photo_upload_id = this.set_busy(true, 'uploading');
+      this.file_upload_id = this.set_busy(true, 'uploading');
     }
   };
 
@@ -4656,8 +4814,8 @@
 
   this.photo_upload_end = function()
   {
-    this.set_busy(false, null, this.photo_upload_id);
-    delete this.photo_upload_id;
+    this.set_busy(false, null, this.file_upload_id);
+    delete this.file_upload_id;
   };
 
   this.set_photo_actions = function(id)
@@ -4674,15 +4832,15 @@
   // load advanced search page
   this.advanced_search = function()
   {
-    var add_url = '&_form=1', target = window;
+    var win, url = {_form: 1, _action: 'search'}, target = window;
 
-    if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
-      add_url += '&_framed=1';
-      target = window.frames[this.env.contentframe];
+    if (win = this.get_frame_window(this.env.contentframe)) {
+      url._framed = 1;
+      target = win;
       this.contact_list.clear_selection();
     }
 
-    this.location_href(this.env.comm_path+'&_action=search'+add_url, target, true);
+    this.location_href(url, target, true);
 
     return true;
   };
@@ -4755,7 +4913,7 @@
   {
     if (this.env.search_request) {
       var lock = this.set_busy(true, 'savedsearchdeleting');
-      this.http_post('search-delete', '_sid='+urlencode(this.env.search_id), lock);
+      this.http_post('search-delete', {_sid: this.env.search_id}, lock);
     }
   };
 
@@ -4789,7 +4947,7 @@
 
     // reset vars
     this.env.current_page = 1;
-    this.http_request('search', '_sid='+urlencode(id), lock);
+    this.http_request('search', {_sid: id}, lock);
   };
 
 
@@ -4800,14 +4958,15 @@
   // preferences section select and load options frame
   this.section_select = function(list)
   {
-    var id = list.get_single_selection(), add_url = '', target = window;
+    var win, id = list.get_single_selection(), target = window,
+      url = {_action: 'edit-prefs', _section: id};
 
     if (id) {
-      if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
-        add_url = '&_framed=1';
-        target = window.frames[this.env.contentframe];
+      if (win = this.get_frame_window(this.env.contentframe)) {
+        url._framed = 1;
+        target = win;
       }
-      this.location_href(this.env.comm_path+'&_action=edit-prefs&_section='+id+add_url, target, true);
+      this.location_href(url, target, true);
     }
 
     return true;
@@ -4828,17 +4987,17 @@
     if (action == 'edit-identity' && (!id || id == this.env.iid))
       return false;
 
-    var add_url = '', target = window;
+    var win, target = window,
+      url = {_action: action, _iid: id};
 
-    if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
-      add_url = '&_framed=1';
-      target = window.frames[this.env.contentframe];
-      document.getElementById(this.env.contentframe).style.visibility = 'inherit';
+    if (win = this.get_frame_window(this.env.contentframe)) {
+      url._framed = 1;
+      target = win;
     }
 
     if (action && (id || action == 'add-identity')) {
       this.set_busy(true);
-      this.location_href(this.env.comm_path+'&_action='+action+'&_iid='+id+add_url, target);
+      this.location_href(url, target);
     }
 
     return true;
@@ -4856,7 +5015,7 @@
 
     // submit request with appended token
     if (confirm(this.get_label('deleteidentityconfirm')))
-      this.goto_url('delete-identity', '_iid='+id+'&_token='+this.env.request_token, true);
+      this.goto_url('delete-identity', { _iid: id, _token: this.env.request_token }, true);
 
     return true;
   };
@@ -4963,7 +5122,7 @@
         newname = this.env.dstfolder === '' ? basename : this.env.dstfolder+this.env.delimiter+basename;
 
       if (newname != this.env.mailbox) {
-        this.http_post('rename-folder', '_folder_oldname='+urlencode(this.env.mailbox)+'&_folder_newname='+urlencode(newname), this.set_busy(true, 'foldermoving'));
+        this.http_post('rename-folder', {_folder_oldname: this.env.mailbox, _folder_newname: newname}, this.set_busy(true, 'foldermoving'));
         this.subscription_list.draglayer.hide();
       }
     }
@@ -4985,7 +5144,7 @@
 
     if (folder && confirm(this.get_label('deletefolderconfirm'))) {
       var lock = this.set_busy(true, 'folderdeleting');
-      this.http_post('delete-folder', '_mbox='+urlencode(folder), lock);
+      this.http_post('delete-folder', {_mbox: folder}, lock);
     }
   };
 
@@ -5183,7 +5342,7 @@
   {
     if (folder) {
       var lock = this.display_message(this.get_label('foldersubscribing'), 'loading');
-      this.http_post('subscribe', '_mbox='+urlencode(folder), lock);
+      this.http_post('subscribe', {_mbox: folder}, lock);
     }
   };
 
@@ -5191,7 +5350,7 @@
   {
     if (folder) {
       var lock = this.display_message(this.get_label('folderunsubscribing'), 'loading');
-      this.http_post('unsubscribe', '_mbox='+urlencode(folder), lock);
+      this.http_post('unsubscribe', {_mbox: folder}, lock);
     }
   };
 
@@ -5209,23 +5368,21 @@
   // when user select a folder in manager
   this.show_folder = function(folder, path, force)
   {
-    var target = window,
+    var win, target = window,
       url = '&_action=edit-folder&_mbox='+urlencode(folder);
 
     if (path)
       url += '&_path='+urlencode(path);
 
-    if (this.env.contentframe && window.frames && window.frames[this.env.contentframe]) {
-      target = window.frames[this.env.contentframe];
+    if (win = this.get_frame_window(this.env.contentframe)) {
+      target = win;
       url += '&_framed=1';
     }
 
-    if (String(target.location.href).indexOf(url) >= 0 && !force) {
+    if (String(target.location.href).indexOf(url) >= 0 && !force)
       this.show_contentframe(true);
-    }
-    else {
+    else
       this.location_href(this.env.comm_path+url, target, true);
-    }
   };
 
   // disables subscription checkbox (for protected folder)
@@ -5239,7 +5396,7 @@
   this.folder_size = function(folder)
   {
     var lock = this.set_busy(true, 'loading');
-    this.http_post('folder-size', '_mbox='+urlencode(folder), lock);
+    this.http_post('folder-size', {_mbox: folder}, lock);
   };
 
   this.folder_size_update = function(size)
@@ -5280,13 +5437,6 @@
     }
   };
 
-  // enable/disable buttons for page shifting
-  this.set_page_buttons = function()
-  {
-    this.enable_command('nextpage', 'lastpage', (this.env.pagecount > this.env.current_page));
-    this.enable_command('previouspage', 'firstpage', (this.env.current_page > 1));
-  };
-
   // set event handlers on registered buttons
   this.init_buttons = function()
   {
@@ -5294,7 +5444,7 @@
       if (typeof cmd !== 'string')
         continue;
 
-      for (var i=0; i< this.buttons[cmd].length; i++) {
+      for (var i=0; i<this.buttons[cmd].length; i++) {
         init_button(cmd, this.buttons[cmd][i]);
       }
     }
@@ -5313,28 +5463,31 @@
       button = a_buttons[n];
       obj = document.getElementById(button.id);
 
+      if (!obj)
+        continue;
+
       // get default/passive setting of the button
-      if (obj && button.type=='image' && !button.status) {
+      if (button.type == 'image' && !button.status) {
         button.pas = obj._original_src ? obj._original_src : obj.src;
         // respect PNG fix on IE browsers
         if (obj.runtimeStyle && obj.runtimeStyle.filter && obj.runtimeStyle.filter.match(/src=['"]([^'"]+)['"]/))
           button.pas = RegExp.$1;
       }
-      else if (obj && !button.status)
+      else if (!button.status)
         button.pas = String(obj.className);
 
       // set image according to button state
-      if (obj && button.type=='image' && button[state]) {
+      if (button.type == 'image' && button[state]) {
         button.status = state;
         obj.src = button[state];
       }
       // set class name according to button state
-      else if (obj && button[state] !== undefined) {
+      else if (button[state] !== undefined) {
         button.status = state;
         obj.className = button[state];
       }
       // disable/enable input buttons
-      if (obj && button.type=='input') {
+      if (button.type == 'input') {
         button.status = state;
         obj.disabled = !state;
       }
@@ -5471,7 +5624,7 @@
       }
       // add element and set timeout
       this.messages[key].elements.push(id);
-      window.setTimeout(function() { ref.hide_message(id, type == 'loading'); }, timeout);
+      setTimeout(function() { ref.hide_message(id, type == 'loading'); }, timeout);
       return id;
     }
 
@@ -5491,7 +5644,7 @@
     this.triggerEvent('message', { message:msg, type:type, timeout:timeout, object:obj });
 
     if (timeout > 0)
-      window.setTimeout(function() { ref.hide_message(id, type == 'loading'); }, timeout);
+      setTimeout(function() { ref.hide_message(id, type == 'loading'); }, timeout);
     return id;
   };
 
@@ -5557,6 +5710,39 @@
     this.messages = {};
   };
 
+  // open a jquery UI dialog with the given content
+  this.show_popup_dialog = function(html, title)
+  {
+    // forward call to parent window
+    if (this.is_framed()) {
+      parent.rcmail.show_popup_dialog(html, title);
+      return;
+    }
+
+    var popup = $('<div class="popup">')
+      .html(html)
+      .dialog({
+        title: title,
+        modal: true,
+        resizable: true,
+        width: 580,
+        close: function(event, ui) { $(this).remove() }
+      });
+
+      // resize and center popup
+      var win = $(window), w = win.width(), h = win.height(),
+        width = popup.width(), height = popup.height();
+      popup.dialog('option', { height: Math.min(h-40, height+50), width: Math.min(w-20, width+50) })
+        .dialog('option', 'position', ['center', 'center']);  // only works in a separate call (!?)
+  };
+
+  // enable/disable buttons for page shifting
+  this.set_page_buttons = function()
+  {
+    this.enable_command('nextpage', 'lastpage', (this.env.pagecount > this.env.current_page));
+    this.enable_command('previouspage', 'firstpage', (this.env.current_page > 1));
+  };
+
   // mark a mailbox as selected and set environment variable
   this.select_folder = function(name, prefix, encode)
   {
@@ -5603,7 +5789,7 @@
 
   // for reordering column array (Konqueror workaround)
   // and for setting some message list global variables
-  this.set_message_coltypes = function(coltypes, repl)
+  this.set_message_coltypes = function(coltypes, repl, smart_col)
   {
     var list = this.message_list,
       thead = list ? list.list.tHead : null,
@@ -5631,15 +5817,13 @@
 
       for (n=0, len=this.env.coltypes.length; n<len; n++) {
         col = this.env.coltypes[n];
-        if ((cell = thead.rows[0].cells[n]) && (col=='from' || col=='to')) {
+        if ((cell = thead.rows[0].cells[n]) && (col == 'from' || col == 'to' || col == 'fromto')) {
           cell.id = 'rcm'+col;
+          $('span,a', cell).text(this.get_label(col == 'fromto' ? smart_col : col));
           // if we have links for sorting, it's a bit more complicated...
-          if (cell.firstChild && cell.firstChild.tagName.toLowerCase()=='a') {
-            cell = cell.firstChild;
-            cell.onclick = function(){ return rcmail.command('sort', this.__col, this); };
-            cell.__col = col;
-          }
-          cell.innerHTML = this.get_label(col);
+          $('a', cell).click(function(){
+            return rcmail.command('sort', this.id.replace(/^rcm/, ''), this);
+          });
         }
       }
     }
@@ -5771,31 +5955,31 @@
   };
 
   // display all-headers row and fetch raw message headers
-  this.load_headers = function(elem)
+  this.show_headers = function(props, elem)
   {
     if (!this.gui_objects.all_headers_row || !this.gui_objects.all_headers_box || !this.env.uid)
       return;
 
     $(elem).removeClass('show-headers').addClass('hide-headers');
     $(this.gui_objects.all_headers_row).show();
-    elem.onclick = function() { rcmail.hide_headers(elem); };
+    elem.onclick = function() { rcmail.command('hide-headers', '', elem); };
 
     // fetch headers only once
     if (!this.gui_objects.all_headers_box.innerHTML) {
       var lock = this.display_message(this.get_label('loading'), 'loading');
-      this.http_post('headers', '_uid='+this.env.uid, lock);
+      this.http_post('headers', {_uid: this.env.uid}, lock);
     }
   };
 
   // hide all-headers row
-  this.hide_headers = function(elem)
+  this.hide_headers = function(props, elem)
   {
     if (!this.gui_objects.all_headers_row || !this.gui_objects.all_headers_box)
       return;
 
     $(elem).removeClass('hide-headers').addClass('show-headers');
     $(this.gui_objects.all_headers_row).hide();
-    elem.onclick = function() { rcmail.load_headers(elem); };
+    elem.onclick = function() { rcmail.command('show-headers', '', elem); };
   };
 
 
@@ -5847,7 +6031,7 @@
     else
       query._action = this.env.action;
 
-    var base = this.env.comm_path;
+    var base = this.env.comm_path, k, param = {};
 
     // overwrite task name
     if (query._action.match(/([a-z]+)\/([a-z0-9-_.]+)/)) {
@@ -5856,8 +6040,7 @@
     }
 
     // remove undefined values
-    var param = {};
-    for (var k in query) {
+    for (k in query) {
       if (query[k] !== undefined && query[k] !== null)
         param[k] = query[k];
     }
@@ -5870,10 +6053,18 @@
     if (lock || lock === null)
       this.set_busy(true);
 
-    if (this.is_framed())
+    if (this.is_framed()) {
       parent.rcmail.redirect(url, lock);
-    else
+    }
+    else {
+      if (this.env.extwin) {
+        if (typeof url == 'string')
+          url += (url.indexOf('?') < 0 ? '?' : '&') + '_extwin=1';
+        else
+          url._extwin = 1;
+      }
       this.location_href(url, window);
+    }
   };
 
   this.goto_url = function(action, query, lock)
@@ -5886,11 +6077,17 @@
     if (frame)
       this.lock_frame();
 
+    if (typeof url == 'object')
+      url = this.env.comm_path + '&' + $.param(url);
+
     // simulate real link click to force IE to send referer header
     if (bw.ie && target == window)
       $('<a>').attr('href', url).appendTo(document.body).get(0).click();
     else
       target.location.href = url;
+
+    // reset keep-alive interval
+    this.start_keepalive();
   };
 
   // send a http request to the server
@@ -5917,8 +6114,11 @@
     return $.ajax({
       type: 'GET', url: url, data: { _unlock:(lock?lock:0) }, dataType: 'json',
       success: function(data){ ref.http_response(data); },
-      error: function(o, status, err) { rcmail.http_error(o, status, err, lock); }
+      error: function(o, status, err) { ref.http_error(o, status, err, lock, action); }
     });
+
+    // reset keep-alive interval
+    this.start_keepalive();
   };
 
   // send a http POST request to the server
@@ -5936,7 +6136,7 @@
     // trigger plugin hook
     var result = this.triggerEvent('request'+action, postdata);
     if (result !== undefined) {
-      // abort if one the handlers returned false
+      // abort if one of the handlers returned false
       if (result === false)
         return false;
       else
@@ -5949,8 +6149,11 @@
     return $.ajax({
       type: 'POST', url: url, data: postdata, dataType: 'json',
       success: function(data){ ref.http_response(data); },
-      error: function(o, status, err) { rcmail.http_error(o, status, err, lock); }
+      error: function(o, status, err) { ref.http_error(o, status, err, lock, action); }
     });
+
+    // reset keep-alive interval
+    this.start_keepalive();
   };
 
   // aborts ajax request
@@ -6038,20 +6241,21 @@
               this.show_contentframe(false);
             // disable commands useless when mailbox is empty
             this.enable_command(this.env.message_commands, 'purge', 'expunge',
-              'select-all', 'select-none', 'sort', 'expand-all', 'expand-unread', 'collapse-all', false);
+              'select-all', 'select-none', 'expand-all', 'expand-unread', 'collapse-all', false);
           }
           if (this.message_list)
             this.triggerEvent('listupdate', { folder:this.env.mailbox, rowcount:this.message_list.rowcount });
         }
         break;
 
+      case 'refresh':
       case 'check-recent':
       case 'getunread':
       case 'search':
         this.env.qsearch = null;
       case 'list':
         if (this.task == 'mail') {
-          this.enable_command('show', 'expunge', 'select-all', 'select-none', 'sort', (this.env.messagecount > 0));
+          this.enable_command('show', 'expunge', 'select-all', 'select-none', (this.env.messagecount > 0));
           this.enable_command('purge', this.purge_mailbox_test());
           this.enable_command('expand-all', 'expand-unread', 'collapse-all', this.env.threading && this.env.messagecount);
 
@@ -6078,18 +6282,38 @@
 
     this.triggerEvent('responseafter', {response: response});
     this.triggerEvent('responseafter'+response.action, {response: response});
+
+    // reset keep-alive interval
+    this.start_keepalive();
   };
 
   // handle HTTP request errors
-  this.http_error = function(request, status, err, lock)
+  this.http_error = function(request, status, err, lock, action)
   {
     var errmsg = request.statusText;
 
     this.set_busy(false, null, lock);
     request.abort();
 
+    // don't display error message on page unload (#1488547)
+    if (this.unload)
+      return;
+
     if (request.status && errmsg)
       this.display_message(this.get_label('servererror') + ' (' + errmsg + ')', 'error');
+    else if (status == 'timeout')
+      this.display_message(this.get_label('requesttimedout'), 'error');
+    else if (request.status == 0 && status != 'abort')
+      this.display_message(this.get_label('servererror') + ' (No connection)', 'error');
+
+    // redirect to url specified in location header if not empty
+    var location_url = request.getResponseHeader("Location");
+    if (location_url)
+      this.redirect(location_url);
+
+    // re-send keep-alive requests after 30 seconds
+    if (action == 'keep-alive')
+      setTimeout(function(){ ref.keep_alive(); ref.start_keepalive(); }, 30000);
   };
 
   // post the given form to a hidden iframe
@@ -6114,7 +6338,7 @@
     // have to do it this way for IE
     // otherwise the form will be posted to a new window
     if (document.all) {
-      var html = '<iframe name="'+frame_name+'" src="program/blank.gif" style="width:0;height:0;visibility:hidden;"></iframe>';
+      var html = '<iframe name="'+frame_name+'" src="program/resources/blank.gif" style="width:0;height:0;visibility:hidden;"></iframe>';
       document.body.insertAdjacentHTML('BeforeEnd', html);
     }
     else { // for standards-compilant browsers
@@ -6140,16 +6364,147 @@
     return frame_name;
   };
 
-  // starts interval for keep-alive/check-recent signal
+  // html5 file-drop API
+  this.document_drag_hover = function(e, over)
+  {
+    e.preventDefault();
+    $(ref.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');
+  };
+
+  // handler when files are dropped to a designated area.
+  // compose a multipart form data and submit it to the server
+  this.file_dropped = function(e)
+  {
+    // abort event and reset UI
+    this.file_drag_hover(e, false);
+
+    // prepare multipart form data composition
+    var files = e.target.files || e.dataTransfer.files,
+      formdata = window.FormData ? new FormData() : null,
+      fieldname = (this.env.filedrop.fieldname || '_file') + (this.env.filedrop.single ? '' : '[]'),
+      boundary = '------multipartformboundary' + (new Date).getTime(),
+      dashdash = '--', crlf = '\r\n',
+      multipart = dashdash + boundary + crlf;
+
+    if (!files || !files.length)
+      return;
+
+    // inline function to submit the files to the server
+    var submit_data = function() {
+      var multiple = files.length > 1,
+        ts = new Date().getTime(),
+        content = '<span>' + (multiple ? ref.get_label('uploadingmany') : files[0].name) + '</span>';
+
+      // add to attachments list
+      if (!ref.add2attachment_list(ts, { name:'', html:content, classname:'uploading', complete:false }))
+        ref.file_upload_id = ref.set_busy(true, 'uploading');
+
+      // complete multipart content and post request
+      multipart += dashdash + boundary + dashdash + crlf;
+
+      $.ajax({
+        type: 'POST',
+        dataType: 'json',
+        url: ref.url(ref.env.filedrop.action||'upload', { _id:ref.env.compose_id||ref.env.cid||'', _uploadid:ts, _remote:1 }),
+        contentType: formdata ? false : 'multipart/form-data; boundary=' + boundary,
+        processData: false,
+        data: formdata || multipart,
+        headers: {'X-Roundcube-Request': ref.env.request_token},
+        beforeSend: function(xhr, s) { if (!formdata && xhr.sendAsBinary) xhr.send = xhr.sendAsBinary; },
+        success: function(data){ ref.http_response(data); },
+        error: function(o, status, err) { ref.http_error(o, status, err, null, 'attachment'); }
+      });
+    };
+
+    // get contents of all dropped files
+    var last = this.env.filedrop.single ? 0 : files.length - 1;
+    for (var j=0, i=0, f; j <= last && (f = files[i]); i++) {
+      if (!f.name) f.name = f.fileName;
+      if (!f.size) f.size = f.fileSize;
+      if (!f.type) f.type = 'application/octet-stream';
+
+      // file name contains non-ASCII characters, do UTF8-binary string conversion.
+      if (!formdata && /[^\x20-\x7E]/.test(f.name))
+        f.name_bin = unescape(encodeURIComponent(f.name));
+
+      // filter by file type if requested
+      if (this.env.filedrop.filter && !f.type.match(new RegExp(this.env.filedrop.filter))) {
+        // TODO: show message to user
+        continue;
+      }
+
+      // do it the easy way with FormData (FF 4+, Chrome 5+, Safari 5+)
+      if (formdata) {
+        formdata.append(fieldname, f);
+        if (j == last)
+          return submit_data();
+      }
+      // use FileReader supporetd by Firefox 3.6
+      else if (window.FileReader) {
+        var reader = new FileReader();
+
+        // closure to pass file properties to async callback function
+        reader.onload = (function(file, j) {
+          return function(e) {
+            multipart += 'Content-Disposition: form-data; name="' + fieldname + '"';
+            multipart += '; filename="' + (f.name_bin || file.name) + '"' + crlf;
+            multipart += 'Content-Length: ' + file.size + crlf;
+            multipart += 'Content-Type: ' + file.type + crlf + crlf;
+            multipart += e.target.result + crlf;
+            multipart += dashdash + boundary + crlf;
+
+            if (j == last)  // we're done, submit the data
+              return submit_data();
+          }
+        })(f,j);
+        reader.readAsBinaryString(f);
+      }
+      // Firefox 3
+      else if (f.getAsBinary) {
+        multipart += 'Content-Disposition: form-data; name="' + fieldname + '"';
+        multipart += '; filename="' + (f.name_bin || f.name) + '"' + crlf;
+        multipart += 'Content-Length: ' + f.size + crlf;
+        multipart += 'Content-Type: ' + f.type + crlf + crlf;
+        multipart += f.getAsBinary() + crlf;
+        multipart += dashdash + boundary +crlf;
+
+        if (j == last)
+          return submit_data();
+      }
+
+      j++;
+    }
+  };
+
+  // starts interval for keep-alive signal
   this.start_keepalive = function()
   {
-    if (this._int)
-      clearInterval(this._int);
+    if (!this.env.session_lifetime || this.env.framed || this.env.extwin || this.task == 'login' || this.env.action == 'print')
+      return;
 
-    if (this.env.keep_alive && !this.env.framed && this.task == 'mail' && this.gui_objects.mailboxlist)
-      this._int = setInterval(function(){ ref.check_for_recent(false); }, this.env.keep_alive * 1000);
-    else if (this.env.keep_alive && !this.env.framed && this.task != 'login' && this.env.action != 'print')
-      this._int = setInterval(function(){ ref.keep_alive(); }, this.env.keep_alive * 1000);
+    if (this._keepalive)
+      clearInterval(this._keepalive);
+
+    this._keepalive = setInterval(function(){ ref.keep_alive(); }, this.env.session_lifetime * 0.5 * 1000);
+  };
+
+  // starts interval for refresh signal
+  this.start_refresh = function()
+  {
+    if (!this.env.refresh_interval || this.env.framed || this.env.extwin || this.task == 'login' || this.env.action == 'print')
+      return;
+
+    if (this._refresh)
+      clearInterval(this._refresh);
+
+    this._refresh = setInterval(function(){ ref.refresh(); }, this.env.refresh_interval * 1000);
   };
 
   // sends keep-alive signal
@@ -6159,29 +6514,39 @@
       this.http_request('keep-alive');
   };
 
-  // sends request to check for recent messages
-  this.check_for_recent = function(refresh)
+  // sends refresh signal
+  this.refresh = function()
   {
-    if (this.busy)
+    if (this.busy) {
+      // try again after 10 seconds
+      setTimeout(function(){ ref.refresh(); ref.start_refresh(); }, 10000);
       return;
-
-    var lock, addurl = '_mbox=' + urlencode(this.env.mailbox);
-
-    if (refresh) {
-      lock = this.set_busy(true, 'checkingmail');
-      addurl += '&_refresh=1';
-      // reset check-recent interval
-      this.start_keepalive();
     }
 
-    if (this.gui_objects.messagelist)
-      addurl += '&_list=1';
-    if (this.gui_objects.quotadisplay)
-      addurl += '&_quota=1';
-    if (this.env.search_request)
-      addurl += '&_search=' + this.env.search_request;
+    var params = {}, lock = this.set_busy(true, 'refreshing');
 
-    this.http_request('check-recent', addurl, lock);
+    if (this.task == 'mail' && this.gui_objects.mailboxlist)
+      params = this.check_recent_params();
+
+    // plugins should bind to 'requestrefresh' event to add own params
+    this.http_request('refresh', params, lock);
+  };
+
+  // returns check-recent request parameters
+  this.check_recent_params = function()
+  {
+    var params = {_mbox: this.env.mailbox};
+
+    if (this.gui_objects.mailboxlist)
+      params._folderlist = 1;
+    if (this.gui_objects.messagelist)
+      params._list = 1;
+    if (this.gui_objects.quotadisplay)
+      params._quota = 1;
+    if (this.env.search_request)
+      params._search = this.env.search_request;
+
+    return params;
   };
 
 
@@ -6207,9 +6572,10 @@
   {
     if (obj.selectionEnd !== undefined)
       return obj.selectionEnd;
-    else if (document.selection && document.selection.createRange) {
+
+    if (document.selection && document.selection.createRange) {
       var range = document.selection.createRange();
-      if (range.parentElement()!=obj)
+      if (range.parentElement() != obj)
         return 0;
 
       var gm = range.duplicate();
@@ -6221,10 +6587,10 @@
       gm.setEndPoint('EndToStart', range);
       var p = gm.text.length;
 
-      return p<=obj.value.length ? p : -1;
+      return p <= obj.value.length ? p : -1;
     }
-    else
-      return obj.value.length;
+
+    return obj.value.length;
   };
 
   // moves cursor to specified position
@@ -6293,6 +6659,105 @@
       $(elem).click(function() { rcmail.register_protocol_handler(name); return false; });
   };
 
+  // Checks browser capabilities eg. PDF support, TIF support
+  this.browser_capabilities_check = function()
+  {
+    if (!this.env.browser_capabilities)
+      this.env.browser_capabilities = {};
+
+    if (this.env.browser_capabilities.pdf === undefined)
+      this.env.browser_capabilities.pdf = this.pdf_support_check();
+
+    if (this.env.browser_capabilities.flash === undefined)
+      this.env.browser_capabilities.flash = this.flash_support_check();
+
+    if (this.env.browser_capabilities.tif === undefined)
+      this.tif_support_check();
+  };
+
+  // Returns browser capabilities string
+  this.browser_capabilities = function()
+  {
+    if (!this.env.browser_capabilities)
+      return '';
+
+    var n, ret = [];
+
+    for (n in this.env.browser_capabilities)
+      ret.push(n + '=' + this.env.browser_capabilities[n]);
+
+    return ret.join();
+  };
+
+  this.tif_support_check = function()
+  {
+    var img = new Image();
+
+    img.onload = function() { rcmail.env.browser_capabilities.tif = 1; };
+    img.onerror = function() { rcmail.env.browser_capabilities.tif = 0; };
+    img.src = 'program/resources/blank.tif';
+  };
+
+  this.pdf_support_check = function()
+  {
+    var plugin = navigator.mimeTypes ? navigator.mimeTypes["application/pdf"] : {},
+      plugins = navigator.plugins,
+      len = plugins.length,
+      regex = /Adobe Reader|PDF|Acrobat/i;
+
+    if (plugin && plugin.enabledPlugin)
+        return 1;
+
+    if (window.ActiveXObject) {
+      try {
+        if (axObj = new ActiveXObject("AcroPDF.PDF"))
+          return 1;
+      }
+      catch (e) {}
+      try {
+        if (axObj = new ActiveXObject("PDF.PdfCtrl"))
+          return 1;
+      }
+      catch (e) {}
+    }
+
+    for (i=0; i<len; i++) {
+      plugin = plugins[i];
+      if (typeof plugin === 'String') {
+        if (regex.test(plugin))
+          return 1;
+      }
+      else if (plugin.name && regex.test(plugin.name))
+        return 1;
+    }
+
+    return 0;
+  };
+
+  this.flash_support_check = function()
+  {
+    var plugin = navigator.mimeTypes ? navigator.mimeTypes["application/x-shockwave-flash"] : {};
+
+    if (plugin && plugin.enabledPlugin)
+        return 1;
+
+    if (window.ActiveXObject) {
+      try {
+        if (axObj = new ActiveXObject("ShockwaveFlash.ShockwaveFlash"))
+          return 1;
+      }
+      catch (e) {}
+    }
+
+    return 0;
+  };
+
+  // Cookie setter
+  this.set_cookie = function(name, value, expires)
+  {
+    setCookie(name, value, expires, this.env.cookie_path, this.env.cookie_domain, this.env.cookie_secure);
+  }
+
 }  // end object rcube_webmail
 
 
@@ -6323,8 +6788,9 @@
   }
 };
 
+rcube_webmail.prototype.get_cookie = getCookie;
+
 // copy event engine prototype
 rcube_webmail.prototype.addEventListener = rcube_event_engine.prototype.addEventListener;
 rcube_webmail.prototype.removeEventListener = rcube_event_engine.prototype.removeEventListener;
 rcube_webmail.prototype.triggerEvent = rcube_event_engine.prototype.triggerEvent;
-

--
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