protected void addMenu() {
		JMenuBar bar = new JMenuBar();
		JMenu op = new JMenu("");
		JMenu help = new JMenu("");

		JMenuItem admin = new JMenuItem("¼û");
		JMenuItem exit = new JMenuItem("˳");
		JMenuItem author = new JMenuItem("");

		admin.setActionCommand("admin");
		exit.setActionCommand("exit");
		author.setActionCommand("author");
		admin.addActionListener(this);
		exit.addActionListener(this);
		author.addActionListener(this);

		op.add(admin);
		op.add(exit);
		help.add(author);

		bar.add(op);
		bar.add(help);
		this.setJMenuBar(bar);
	}