This Fancy Sliding Tab Menu developed using script.aculo.us. Looks really cool when you slide your mouse over the menu.
It includes an idle state listener to bring all the tabs back to their normal state after a desired amount of time without mouse movement on the window.

Check out the video demo.

Read more and download the source from the below link.
http://www.andrewsellick.com/64/fancy-sliding-tab-menu-v2

jNice – jQuery Custom Form Elements

If you need to create custom html form elements using javascript then jNice is what you should go for. You can customize the looks of your html form elements but they continue to function like normal form elements.

Check out the video demo.

Read more and download the source from the below link.
http://plugins.jquery.com/project/jNice