Sliding Menu

If you're using Netscape 4.X or Internet Explorer 4.X, you should be able to see a sliding menu on the left side of the screen. Just move your mouse over the light yellow box on the left side of the screen. If you don't have a 4.x browser, you'll see nothing.

You can either check out the source code or go to the "Updates to the Book" page and check out the JavaScript links.