Footer with Javascript

[Hazukiy]

Hi, I'm trying to make it so when the height of the browser is more than '900' it changes the style type bottom to 0. Here's my code but it doesn't work? Thanks.

 

 

<script type="text/javascript">
	function changeHeightLimit()
	{
		if(window.innerHeight >= 900)
		{
			document.getElementById("footer").style.bottom="0";
		}
	}
</script>