rem: proto._invalidatePreferredWidth = function() 
add: proto._invalidatePreferredWidth = function() 
context: proto._invalidatePreferredWidth = function() {  this._preferred_width = null;  var pa = this.getParent();  if (pa) {    pa._childrenPreferredWidthInvalidated(this);  };};
meta: 1005	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1005/ee8bda88301088375d4815625181857cb6281591/QxWidget.js/buggy/qooxdoo/source/script/widgets/QxWidget.js