public void removeWebEventListener(String type,ActionListener listener){
  EventDispatcher e=getEventDispatcher(type,false);
  if (e != null) {
    e.removeListener(listener);
    if (!e.hasListeners()) {
      listeners.remove(type);
    }
  }
}

public void removeWebEventListener ( String type , ActionListener listener ) { EventDispatcher e = getEventDispatcher ( type , false ) ; if ( e != null ) { e . removeListener ( listener ) ; if ( ! e . hasListeners ( ) ) { listeners . remove ( type ) ; } } }
removes the listener , see addwebeventlistener for details
