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