var element = Utils.getElementAt(parts[0]); 
var element = Utils.getElementAt(parts[0], this.location); 
FirefoxDriver.prototype.getElementChildren = function(elementIdAndTagName) {    var parts = elementIdAndTagName.split(" ");    var element = Utils.getElementAt(parts[0]);    var children = element.getElementsByTagName(parts[1]);    var response = "";    for (var i = 0; i < children.length; i++) {        response += Utils.addToKnownElements(children[i]) + " ";    }    this.server.respond("getElementChildren", response);}
4983	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/4983/3aa848daac3cf6b346c932bafbb7bfd763430786/wrappedElement.js/clean/firefox/src/extension/content/wrappedElement.js