add:   if (xmlHttp.readyState == 0) {  window.setTimeout(function () {  if (xmlHttp.readyState == 0 && !window.location.href.match(/firebugreload=1/)) { xmlHttp.abort(); window.location.href = window.location.href +"?firebugreload=1"; } }, 200); } 
context: function _startLoadXmlTree(sSrc, jsNode,expandSrc) {	if (jsNode.loading || jsNode.loaded)		return;	     jsNode.loading = true;	try {var xmlHttp = XmlHttp.create();}	catch(e) { /*window.location.href = "./navi.old/";*/ return false;}	     xmlHttp.open("GET", sSrc, true);	// async	    xmlHttp.onreadystatechange = function () {		        if (xmlHttp.readyState == 4) {            _xmlFileLoaded(xmlHttp.responseXML, jsNode, expandSrc);		}	};	// call in new thread to allow ui to update	window.setTimeout(function () {		xmlHttp.send(null);	}, 10);	}
meta: 6621	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/6621/465a43a856a35b3eb5307505fd2758074624f2f8/xloadtree.js/buggy/admin/webinc/xlt/xloadtree.js