To get HTML5 Tags working in Internet Explorer 7 (IE7) and Internet Explorer 8 (IE8), there is a simple workaround. Before the html head close tag add
<!--[if lt IE 9]>
<script>
document.createElement('header');
document.createElement('nav');
document.createElement('section');
document.createElement('article');
document.createElement('aside');
document.createElement('footer');
document.createElement('hgroup');
</script>
<![endif]-->
</head>
and in your css in the very first line(s)
header, nav, section, article, aside, footer, hgroup {
display: block;
}
Than most html5 stuff shall work. Yes, things like input types still don’t work. That’s for sure, but at least the design won’t be broken, if you are using html5.