Soh Tanaka wrote a tutorial that shows you how to create page peel (a.k.a magic corner) effect using jQuery & CSS. Unlike most, this solution does not require Flash. You can use Page Peel Effect to place advertisement or simply draw attention to something important on your website.
Tutorial is well written, short and to the point. If you are experienced developer you will be able to easily understand the concept and take it further. If you are looking for jQuery plugin that can do the trick; checkout The Sexy Curls jQuery Plugin by Elliott Kember.
Developed by Soh Tanaka; You can find tutorial & demo on Soh Tanaka’s Blog.