if (obj && obj.constructor && 
if (obj && obj.constructor && 
    isArray: function(obj) { // frames lose type, so test constructor string        if (obj && obj.constructor &&                    obj.constructor.toString().indexOf('Array') > -1) {            return true;        } else {            return ((typeof obj == 'object') || (typeof obj == 'function')) && obj.constructor == Array;        }    },
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/8237a6359bebacf3e34f1134ef713c687c8e3edb/reps.js/buggy/extension/content/firebug/reps.js