rem: observerService.AddObserver(messageComposeOfflineObserver, "network:offline-status-changed"); 
add: observerService.addObserver(messageComposeOfflineObserver, "network:offline-status-changed", false); 
context: function AddMessageComposeOfflineObserver(){  var observerService = Components.classes["@mozilla.org/observer-service;1"].getService(Components.interfaces.nsIObserverService);  observerService.AddObserver(messageComposeOfflineObserver, "network:offline-status-changed");    isOffline = ioService.offline;  // set the initial state of the send button  MessageComposeOfflineStateChanged(isOffline);}
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/d18d7e2b176a10ab2598f8549a9bd79b1a50de28/MsgComposeCommands.js/clean/mailnews/compose/resources/content/MsgComposeCommands.js