if (context.sourceCache) 
if (context.sourceCache) 
this.guessFunctionName = function(url, lineNo, context){    if (context)     {        if (context.sourceCache)             return this.guessFunctionNameFromLines(url, lineNo, context.sourceCache);        return "(no cache)";    }    return "(no context)";};
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/8237a6359bebacf3e34f1134ef713c687c8e3edb/lib.js/clean/extension/content/firebug/lib.js