// JavaScript Document

var y=Math.floor(Math.random()*80219);
function move()
{
	y-=1;
	if(y<0)
	{
		y+=8218;
	}
	laag.style.backgroundPosition = "0px " + y + "px";
}

function start()
{
	timer=window.setInterval(move,20);
}

function init()
{
	laag = document.getElementById("sidebar");
	start();
}