rem: alert("Can't go forward from index " + this.currentBackForwardIndex); 
add: console.error("Can't go forward from index " + this.currentBackForwardIndex); 
context: WebInspector.forward = function(){    if (this.currentBackForwardIndex >= this.backForwardList.length - 1) {        alert("Can't go forward from index " + this.currentBackForwardIndex);        return;    }    this.navigateToPanel(this.backForwardList[++this.currentBackForwardIndex], null, true);}
meta: 5650	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5650/81abc84dcf5f8eaa2dfbd11f9563bb8fc5f4c630/inspector.js/buggy/WebCore/page/inspector/inspector.js