There are many different ways of simplifying an interface, and one of the best is by means of using tabs. I've written a couple of tutorials on making tabbed interfaces with CSS. However, it would be even easier to just have a class that generates the tabs automatically. Well, this class can be used to generate a tab based Web interface.

It generates HTML with Javascript to present a tab bar with links that when clicked switch the content that is presented underneath.

The content is loaded from the server using AJAX to avoid page reloading.

The tab links may have a fallback URL that is used when loading the pages via AJAX is not possible.
Here's the link to the class: http://www.phpclasses.org/browse/package/3824.html