One of the recent improvements in the Facebook page is that it allows you to add tabs to your Facebook sidebar menu, like the one shown on this article. I really had a tough time in adding few tabs for the techglimpse fan page. Interestingly during my search for adding tabs, i came across an awesome application called "Static HTML: iframe tabs".
Reference : http://techglimpse.com/index.php/tutorial-on-how-to-add-iframe-tabs-to-your-facebook-page.php