var lineNo = FBL.getLineAtPCForEvent(frame, context); 
var lineNo = FBL.getLineAtPC(frame, context); 
this.getSourceLinkAtPCForEvent = function(frame, context){    var url = context.eventSourceURLByTag[frame.script.tag];    var lineNo = FBL.getLineAtPCForEvent(frame, context);    return new this.SourceLink(url, lineNo, "js");}
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/4430f0c18a86cfa77637c382657dd43348a627ce/lib.js/buggy/extension/content/firebug/lib.js