rem: this.outliner.invalidate(); 
add: this.tree.invalidate(); 
context:   invalidate: function()  {    this.outliner.invalidate();  },
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/d4023e7c751fac47e21c8f3ea52e3a9e655bec1b/pageInfo.js/clean/suite/browser/pageInfo.js