rem: this.pageData[aPageTag][aItemID] = aDataObject; 
add:  this.pageData[aPageTag].elementIDs[aItemID] = aDataObject; 
context:     setItemData: function (aPageTag, aItemID, aDataObject)    {      if (!(aPageTag in this.pageData))        this.pageData[aPageTag] = new Object();      this.pageData[aPageTag][aItemID] = aDataObject;    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/ad2c14ebc1a2f69a8a616ad31a14f4b7f36e9fde/nsWidgetStateManager.js/clean/toolkit/content/nsWidgetStateManager.js