fbs.runUntil(url, lineNo, context.debugFrame); 
fbs.runUntil(sourceFile, lineNo, context.debugFrame); 
    runUntil: function(context, url, lineNo)    {        if (!isValidFrame(context.debugFrame))            return;        fbs.runUntil(url, lineNo, context.debugFrame);        this.resume(context);    },
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/76449ef4d8385610e64112c53410246cfda12c62/debugger.js/clean/extension/content/firebug/debugger.js