Bug 234455, Centralize event dispatch r=jst, sr=bz

browser/base/content/tabbrowser.xml

@@ -59,8 +59,7 @@
 
     <content>
       <xul:stringbundle src="chrome://global/locale/tabbrowser.properties"/>
-      <xul:tabbox flex="1" eventnode="document" xbl:inherits="handleCtrlPageUpDown"
-                  onselect="if (!('updateCurrentBrowser' in this.parentNode) || event.target.localName != 'tabpanels') return; this.parentNode.updateCurrentBrowser();">
+      <xul:tabbox flex="1" eventnode="document" xbl:inherits="handleCtrlPageUpDown">
         <xul:hbox class="tab-drop-indicator-bar">
           <xul:hbox class="tab-drop-indicator"/>
         </xul:hbox>
@@ -107,7 +106,10 @@
                      class="tabbrowser-tab" label="&untitledTab;" crop="end"/>
           </xul:tabs>
         </xul:hbox>
-        <xul:tabpanels flex="1" class="plain" selectedIndex="0">
+        <xul:tabpanels flex="1" class="plain" selectedIndex="0"
+                       onselect="if (!('updateCurrentBrowser' in this.parentNode.parentNode) ||
+                                     event.target != this) return;
+                                 this.parentNode.parentNode.updateCurrentBrowser();">
           <xul:vbox flex="1">
             <xul:browsermessage hidden="true" type="top"/>
             <xul:browser flex="1" type="content-primary" message="true" disablehistory="true" xbl:inherits="tooltip=contenttooltip,contextmenu=contentcontextmenu,autocompletepopup"/>