window.onload = function() {
	var applet = _ge('applet');
	if(applet)
		applet.className = "hidden";
	if(_el = _ge('sp'+data[0]))
		_el.className = "";
}
var data = new Array(16, 17, 21, 22), ptr=0;
function _ge(e) { if(document.getElementById) return document.getElementById(e); else if(typeof document.all[e]!="undefined") return document.all[e]; else if(document.layers && typeof document[e]!="undefined") return document[e]; else return null; }
function swap_sponsor() {
	for(var i=0; i<data.length; i++)
		if(_el = _ge('sp'+data[i]))
			_el.className = (ptr==i) ? "" : "hidden";
	ptr = (ptr+1) % data.length;
}
if(window.setInterval)
	window.setInterval("swap_sponsor()", 5000);