add:  window.close(); 
context: function onUnload(aEvent){  removeToolboxListeners();  unwrapToolbarItems();  persistCurrentSets();    notifyParentComplete();}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/14ad27d49d60652952ce617e85058fb5e21cab4e/customizeToolbar.js/buggy/mail/base/content/customizeToolbar.js