return "(no cache)"; 
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/c5f013dccda5f25ec6c3894c73898353bae36759/lib.js/buggy/extension/content/firebug/lib.js