- Disable message list keypress operations when CTRL key is pressed,

to workaround FF6 issue, where Ctrl+Pg(Up/Down) was changing list page
  and browser tab)
- Fix multiselection with Ctrl+Up/Down keys

program/js/app.js

@@ -1522,11 +1522,12 @@ function rcube_webmail()
 
   this.msglist_keypress = function(list)
   {
+    if (list.modkey == CONTROL_KEY)
+      return;
+
     if (list.key_pressed == list.ENTER_KEY)
       this.command('show');
-    else if (list.key_pressed == list.DELETE_KEY)
-      this.command('delete');
-    else if (list.key_pressed == list.BACKSPACE_KEY)
+    else if (list.key_pressed == list.DELETE_KEY || list.key_pressed == list.BACKSPACE_KEY)
       this.command('delete');
     else if (list.key_pressed == 33)
       this.command('previouspage');
@@ -2496,7 +2497,7 @@ function rcube_webmail()
     // 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.shiftkey) {
+      if (list && list.modkey == SHIFT_KEY) {
         if (confirm(this.get_label('deletemessagesconfirm')))
           this.permanently_remove_messages();
       }

program/js/common.js

@@ -171,14 +171,12 @@ get_modifier: function(e)
   var opcode = 0;
   e = e || window.event;
 
-  if (bw.mac && e) {
+  if (bw.mac && e)
     opcode += (e.metaKey && CONTROL_KEY) + (e.shiftKey && SHIFT_KEY);
-    return opcode;
-  }
-  if (e) {
+  else if (e)
     opcode += (e.ctrlKey && CONTROL_KEY) + (e.shiftKey && SHIFT_KEY);
+
   return opcode;
-  }
 },
 
 /**

program/js/list.js

@@ -36,7 +36,7 @@ function rcube_list_widget(list, p)
   this.colcount = 0;
 
   this.subject_col = -1;
-  this.shiftkey = false;
+  this.modkey = 0;
   this.multiselect = false;
   this.multiexpand = false;
   this.multi_selecting = false;
@@ -976,7 +976,9 @@ key_press: function(e)
       rcube_event.cancel(e);
       var ret = this.use_plusminus_key(keyCode, mod_key);
       this.key_pressed = keyCode;
+      this.modkey = mod_key;
       this.triggerEvent('keypress');
+      this.modkey = 0;
       return ret;
     case 36: // Home
       this.select_first(mod_key);
@@ -985,11 +987,10 @@ key_press: function(e)
       this.select_last(mod_key);
       return rcube_event.cancel(e);
     default:
-      this.shiftkey = e.shiftKey;
       this.key_pressed = keyCode;
+      this.modkey = mod_key;
       this.triggerEvent('keypress');
-      // reset shiftkey flag, we need it only for registered events
-      this.shiftkey = false;
+      this.modkey = 0;
 
       if (this.key_pressed == this.BACKSPACE_KEY)
         return rcube_event.cancel(e);
@@ -1044,7 +1045,7 @@ use_arrow_key: function(keyCode, mod_key)
     new_row = this.get_prev_row();
 
   if (new_row) {
-    this.select_row(new_row.uid, mod_key, true);
+    this.select_row(new_row.uid, mod_key, false);
     this.scrollto(new_row.uid);
   }