context: function gotoHistoryIndex(aEvent){  var index = aEvent.target.getAttribute("index");  if (!index)    return false;  try {    getWebNavigation().gotoIndex(index);  }  catch(ex) {    return false;  }  return true;  }
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/32219f88c6a0c495f8a61874cdd3ff75f7f0836f/navigator.js/buggy/suite/browser/navigator.js