rem: function isContainer(node) 
add: function isContainer(tree, index) 
context: function isContainer(node){    return node.getAttribute("container") == "true";}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/d38a0937d9c93a0a9d913e2ac781e4328bb8cc73/nsTreeController.js/clean/xpfe/global/resources/content/nsTreeController.js