add: case "bookmarks-chevron": 
context:   getBTContainer: function (aNode)  {    var parent;    var item = aNode.id;    if (!this.isBTBookmark(item))      return "NC:BookmarksRoot"    parent = aNode.parentNode.parentNode;    parent = parent.id;    switch (parent) {    case "BookmarksMenu":      return "NC:BookmarksRoot";    case "PersonalToolbar":      return "NC:PersonalToolbarFolder";    case "bookmarks-button":      return "NC:BookmarksRoot";    default:      return parent;    }  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/6ed28cb5074786918a2f990dff30e54ce931e62b/bookmarksMenu.js/clean/xpfe/components/bookmarks/resources/bookmarksMenu.js