if ( viewer.getTable( ).getSelectionIndex( ) != -1 )
if ( viewer.getTable( ).getSelectionIndex( ) == -1 )
	private void deleteSelection( )	{		if ( viewer.getTable( ).getSelectionIndex( ) != -1 )		{			String key = keyText.getText( );			content.remove( key );			viewer.getTable( ).remove( viewer.getTable( ).getSelectionIndex( ) );			updateSelection( );		}	}