Collection listeners999 = (Collection) _listeners.get(999);
Collection allListeners = new HashSet();
if (listeners != null)
allListeners.addAll(listeners);
if (listeners999 != null)
allListeners.addAll(listeners999);
for (Iterator it = allListeners.iterator(); it.hasNext();)
{
StateChangeListener listener = (StateChangeListener) it.next();
if (listener != null)