if (mNotifiers)
if (mListeners)
nsTopProgressNotifier::ItemScheduled( const PRUnichar* message ){    long rv = 0;    if (mActive)        mActive->ItemScheduled( message );    if (mNotifiers)    {        PRInt32 i=0;        for (; i < mNotifiers->Count(); i++)         {            nsIXPINotifier* element = (nsIXPINotifier*)mNotifiers->ElementAt(i);            if (element != NULL)                element->ItemScheduled( message );        }    }    return rv;}