老式浏览器兼容html5 css3
<!-[if IE]> <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script> <![ENDIF]->
behavior:url(ie-css3.htc)
<!-[if IE]> <script src="http://html5shiv.googlecode.com/svn/trunk/html5.js"></script> <![ENDIF]->
behavior:url(ie-css3.htc)