add: return false; } 
context: function gotoHistoryIndex( aEvent )  {    var index = aEvent.target.getAttribute("index");    if (index) {      appCore.gotoHistoryIndex(index);      return true;    }    return false;  }
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/73019ea054da57bc12001ee9fbddfc7695e0c300/navigator.js/buggy/xpfe/browser/resources/content/navigator.js