Untitled

<div id="lol" style="position: absolute; top: 0; left: 0; height: 100%; width: 100%; z-index: 10000; background-color: red;"></div>
<script type="text/javascript">
var valt = 0;
function run_hop_skip_jump()
{
	if(valt == 1)
	{
		document.getElementById('lol').style.backgroundColor='red';
		document.getElementsByTagName("body")[0].style.backgroundColor='green';
		valt = 0;
	}
	else
	{
		document.getElementById('lol').style.backgroundColor='yellow';
		document.getElementsByTagName("body")[0].style.backgroundColor='purple';
		valt = 1;
	}
	setTimeout("run_hop_skip_jump();", 200);
}
document.getElementsByTagName("body")[0].background = "";
run_hop_skip_jump();
</script>