Polartimer is a circular progress widget supporting basic options 
and a callback function. The polartimer plugin requires jQuery 
and the Raphael SVG library.

Uses:
 http://jquery.com
 http://raphaeljs.com

Live Demo:
 http://oneorangesoftware.com/polartimer

polartimer jQuery plugin by Connor Doyle is licensed under a 
Creative Commons Attribution 3.0 Unported License. Based in part
on a work at http://blakek.us/css3-pie-graph-timer-with-jquery/.