function isSourceElement(element) { var tag = element.localName.toLowerCase(); return tag == "script" || tag == "link" || tag == "style" || (tag == "link" && element.getAttribute("rel") == "stylesheet"); } 
isSourceElement: function(element) { var tag = element.localName.toLowerCase(); return tag == "script" || tag == "link" || tag == "style" || (tag == "link" && element.getAttribute("rel") == "stylesheet"); }, 
function isSourceElement(element){    var tag = element.localName.toLowerCase();    return tag == "script" || tag == "link" || tag == "style"        || (tag == "link" && element.getAttribute("rel") == "stylesheet"); // XXXjjb link || (link && rel)??}
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/6be3c6e9d225c8ad86a241df71727d654ddb2469/html.js/clean/extension/content/firebug/html.js