if ( ( (Button) buttonRegistry.get( i ) ).getSelection( ) )
if ( ( (Button) buttons.next( ) ).getSelection( ) )
	private boolean isButtonSelected( )	{		for ( int i = 0; i < buttonRegistry.size( ); i++ )		{			if ( ( (Button) buttonRegistry.get( i ) ).getSelection( ) )			{				return true;			}		}		return false;	}