ExplorerCanvas 一个让IE支持HTML5的开源的javascript库，
如果在你的网站上应用了 Canvas 的话，这个插件将是一个非常好的选择。
项目地址：
http://code.google.com/p/explorercanvas/
Ref:
Modern browsers like Firefox, Safari, Chrome and Opera support the HTML5 canvas tag to allow 2D command-based drawing. ExplorerCanvas brings the same functionality to Internet Explorer. To use, web developers only need to include a single script tag in their existing web pages.