var sponsors = new Array(4);
var idx = 0;
var inter = 15 * 60 * 1000;

function preLoadSponsor(src,links)
{
	var tmp = new Image;
	tmp.src = src;
	tmp.alt = links;
	sponsors[idx++] = tmp;
	setTimeout("LoadSponsor('"+src+"','"+idx+"','"+links+"')", inter);
	if(idx == 4)
		diapoSponsors();
}

var diap = 0;
function diapoSponsors()
{
	if(diap == idx)
		diap = 0;
	showSponsor(diap);
	setTimeout("diapoSponsors()", 5000);
	diap++;
}

function LoadSponsor(src,num,links)
{
	var tmp = new Image;
	tmp.src = src;
	tmp.alt = links;
	sponsors[num] = tmp;
	setTimeout("LoadSponsor('"+src+"','"+num+"','"+links+"')", inter);
}

function showSponsor(num)
{
	id = document.getElementById("sponsor");
	if(sponsors[num] != null)
	{
		document.sponsorImg.src = sponsors[num].src;
 		if(id != null)
			id.href = sponsors[num].alt;
	}
}