rem: var tree = document.getElementById("Tree"); 
add: var tree = document.getElementById("resultList"); 
context: function SearchPanelShutdown(){  var tree = document.getElementById("Tree");  tree.database.RemoveObserver(RDF_observer);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/07d96867f11683becf5e1a6ca5e64e6a9324c957/search-panel.js/clean/xpfe/components/search/resources/search-panel.js