nsMessenger::OpenAttachment(const char * aContentType, const char * aUrl, const char * aDisplayName, const char * aMessageUri)
nsMessenger::OpenAttachment(const char * url, const char * displayName, const char * messageUri)
nsMessenger::OpenAttachment(const char * aContentType, const char * aUrl, const                            char * aDisplayName, const char * aMessageUri){  nsresult rv = NS_OK;  nsCOMPtr <nsIMsgMessageService> messageService;  rv = GetMessageServiceFromURI(aMessageUri, getter_AddRefs(messageService));  if (messageService)  {    rv = messageService->OpenAttachment(aContentType, aDisplayName, aUrl, aMessageUri, mDocShell, mMsgWindow, nsnull);  }	return rv;}