rem: this.outliner.invalidate(); 
add: this.tree.invalidate(); 
context:   invalidate: function()  {    this.outliner.invalidate();  },
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/d38a0937d9c93a0a9d913e2ac781e4328bb8cc73/pageInfo.js/buggy/xpfe/browser/resources/content/pageInfo.js