Scroll Follow is a simple jQuery plugin that enables a DOM object to follow the page as the user scrolls. It means the plugin allows an element to animate down as the user scrolls the page. Scroll Follow has been successfully, though not extensively, tested on IE6, IE7, FF2, FF3, Safari 3, and Opera 9 all on Windows. You can also set the the duration of the sliding animation.

Requirements: jQuery framework
Demo: http://kitchen.net-perspective.com/open-source/scroll-follow/
License: MIT License