var lpos = 0;
var	tm = null;
var	lpic;

function startLogo ()
{
	tm = setTimeout ("moveLogo()", 50);
	lpic = document.getElementById ("logo").style;
}

function moveLogo ()
{
	clearTimeout (tm);
	tm = null;
	if (--lpos < 0) lpos = 4000;
	lpic.backgroundPosition = "" + lpos + "px 0px";
	tm = setTimeout ("moveLogo()", 50);
}