cb.call(bp.href, bp.lineNo, bp.startLineNo, null); 
cb.call(bp.href, bp.lineNo); 
    enumerateErrorBreakpoints: function(url, cb)    {        if (url)        {            url = normalizeURL(url);            for (var i = 0; i < errorBreakpoints.length; ++i)            {                var bp = errorBreakpoints[i];                if (bp.href == url)                    cb.call(bp.href, bp.lineNo, bp.startLineNo, null);            }        }        else        {            for (var i = 0; i < errorBreakpoints.length; ++i)            {                var bp = errorBreakpoints[i];                cb.call(bp.href, bp.lineNo, bp.startLineNo, null);            }        }    },
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/76449ef4d8385610e64112c53410246cfda12c62/firebug-service.js/buggy/extension/components/firebug-service.js