//Do some initial setup.
    setDefaultCloseOperation(
                          JFrame.EXIT_ON_CLOSE);

    slider.setMajorTickSpacing(10);
    slider.setMinorTickSpacing(5);
    slider.setPaintTicks(true);
    slider.setPaintLabels(true);

    mainPanel.setLayout(new BorderLayout());
    titlePanel.add(new JLabel(
                "Percent Opacity of Butterfly"));
    mainPanel.add(titlePanel,BorderLayout.NORTH);
    mainPanel.add(slider,BorderLayout.CENTER);

    getContentPane().add(mainPanel);
    
    setSize(backgroundWidth + 7,97);
    setLocation(0,backgroundHeight + 25);
    setVisible(true);