lines.push(frame.filename + " (" + frame.lineNumber + ")"); 
lines.push(frame.toString()+ " "+(frame.sourceLine?frame.sourceLine:"")); 
this.getComponentsStack = function(strip){    var lines = [];    for (var frame = Components.stack; frame; frame = frame.caller)        lines.push(frame.filename + " (" + frame.lineNumber + ")");    if (strip)        lines.splice(0, strip);    return lines.join("\n");};
2454	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/2454/f21938f9c12477d5e72da0bab04d18fd1e717898/trace.js/buggy/extension/content/firebug/trace.js