rem: var treeChildrenNode = document.getElementById("engineKids"); return treeChildrenNode.childNodes.length; 
add: var listbox = document.getElementById("searchengines"); return listbox.getElementsByTagName("listitem").length; 
context: function getNumEngines(){  var treeChildrenNode = document.getElementById("engineKids");  return treeChildrenNode.childNodes.length;}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/d38a0937d9c93a0a9d913e2ac781e4328bb8cc73/search-panel.js/buggy/xpfe/components/search/resources/search-panel.js