private static void setLookAndFeel()
    {
        try 
        { 
            UIManager.setLookAndFeel( UIManager.getSystemLookAndFeelClassName() ); 
        }
        
        catch (UnsupportedLookAndFeelException e) {}
        catch (ClassNotFoundException e) {}
        catch (InstantiationException e) {}
        catch (IllegalAccessException e) {}
    }