code: function(listener) {
  
  		var event_name = listener.event_name,
  			index = this._event_handlers[event_name].indexOf(listener);
  		if (Lava.schema.DEBUG && index == -1) Lava.t();
  		this._event_handlers[event_name].splice(index, 1);
  
  		this._event_usage_counters[event_name]--;
  
  		if (this._event_usage_counters[event_name] == 0) {
  
  			this._shutdownEvent(event_name);
  
  		}
  
  	}
docs: Release the listener, acquired via call to {@link Lava.Core#addGlobalHandler}
  @param {_tListener} listener Listener structure