rem: function Shutdown() 
add: function Shutdown() 
context: function Shutdown() {  gDownloadManager.removeListener(gDownloadListener);  let obs = Cc["@mozilla.org/observer-service;1"].            getService(Ci.nsIObserverService);  obs.removeObserver(gDownloadObserver, "download-manager-remove-download");}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10234/39be0419a4a695ce67977c967201261ea171190a/downloads.js/clean/toolkit/mozapps/downloads/content/downloads.js