rem: this.outliner.invalidate(); 
add: this.tree.invalidate(); 
context:   invalidate: function()  {    this.outliner.invalidate();  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/3e34849f77f94528fe693f9ebabe73999df60035/pageInfo.js/buggy/suite/browser/pageInfo.js