<script type="text/javascript">
document.createElement('header');
document.createElement('footer');
document.createElement('article');
</script>
只需要加入这句就可以了：
<!--[if lt IE 9]> <script src="http://html5shim.googlecode.com/svn/trunk/html5.js"></script> <![endif]-->
html5 enabling script:
http://remysharp.com/2009/01/07/html5-enabling-script/