private JButton createAboutButton() {
		JButton about = new JButton("About Iri Tamago");
		about.setFont(new Font("SansSerif", Font.PLAIN, 11));
		about.addActionListener(new ActionListener() {
			@Override
			public void actionPerformed(ActionEvent event) {
				executeAbout();
			}
		});
		return about;
	}