Facebook: Auto-resize height of iframe

gistfile1.html

<div id="fb-root"></div>
	<script type="text/javascript"> 
		window.fbAsyncInit = function() {
			FB.init({
	 			appId: 'APP_ID_HERE',
	 			status: true,
	 			cookie: true,
	 			xfbml: true
			});
		
			FB.Canvas.setAutoResize(100);
   		};

		(function() {
			var e = document.createElement('script');
			e.async = true;
			e.src = document.location.protocol +
			'//connect.facebook.net/en_US/all.js';
			document.getElementById('fb-root').appendChild(e);	
		}());
  </script>