Javascript for 100% height Iframe

I found a lot of sites giving incorrect code to do this so here is some java that worked for me.
<div id=”sitecontainer”>
<iframe id=”frame” src=”http://feeds.feedburner.com/Multimedia-GoogleNews?format=xml” width=”100%” frameborder=”0″ marginheight=”0″ marginwidth=”0″></iframe>
<script type=”text/javascript”>
function resizeIframe() {
var height = document.documentElement.clientHeight;
height -= document.getElementById(‘frame’).offsetTop;
// not sure how to get this dynamically
height -= 20; /* whatever you set your body bottom margin/padding to be [...]

Tags: iframe, javascript