rem: var addressbook = Components.classes["component: 
add: var addressbook = Components.classes["@mozilla.org/addressbook;1"].createInstance(Components.interfaces.nsIAddressBook); 
context: function mailingListExists(listname){	var addressbook = Components.classes["component://netscape/addressbook"].createInstance(Components.interfaces.nsIAddressBook);	if (addressbook.mailListNameExists(listname))	{		var strBundle = srGetStrBundle("chrome://messenger/locale/addressbook/addressBook.properties");		var alertText = strBundle.GetStringFromName("mailListNameExists");		alert(alertText);		return true;	}	return false;}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/0257791053c2b38e1dfaf2ee11afae973e82e394/abMailListDialog.js/buggy/mailnews/addrbook/resources/content/abMailListDialog.js