if ( ( (Button) buttons.next( ) ).equals( widget ) )
if ( buttons.next( ).equals( widget ) )
	protected boolean isRegistered( Widget widget )	{		Iterator buttons = popupButtonRegistry.values( ).iterator( );		while ( buttons.hasNext( ) )		{			if ( ( (Button) buttons.next( ) ).equals( widget ) )			{				return true;			}		}		return false;	}