rem: observerService.RemoveObserver(mailOfflineObserver,"network:offline-status-changed"); 
add: observerService.removeObserver(mailOfflineObserver,"network:offline-status-changed"); 
context: function RemoveMailOfflineObserver(){  var observerService = Components.classes["@mozilla.org/observer-service;1"].getService(Components.interfaces.nsIObserverService);   observerService.RemoveObserver(mailOfflineObserver,"network:offline-status-changed");}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/d18d7e2b176a10ab2598f8549a9bd79b1a50de28/commandglue.js/clean/mailnews/base/resources/content/commandglue.js