nav , ie8

[ 방법1. ]

<!--[if lte IE 8]>
<script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script>
<![endif]-->

html5shi(m|v) creates doc elements for all the html5 elements so the styles from your CSS can kick in. Default behaviour for IE is to ignore unknown elements. For more info see resig's blog post.

일단 보류..