function ads(lb,sky,mr,mr2)
{
	if(lb && document.getElementById("header"))
		document.getElementById("header").innerHTML =  '<iframe src="/ads/index.php?key='+lb+'" scrolling="no" frameborder="0" width="728" height="90"></iframe>';
	if(sky && document.getElementById("skyscraper"))
		document.getElementById("skyscraper").innerHTML =  '<iframe src="/ads/index.php?key='+sky+'" scrolling="no" frameborder="0" width="160" height="600"></iframe>';
	if(mr && document.getElementById("mrectangle"))
		document.getElementById("mrectangle").innerHTML =  '<iframe src="/ads/index.php?key='+mr+'" scrolling="no" frameborder="0" width="300" height="250"></iframe>';
	if(mr2 && document.getElementById("mrectangle2"))
		document.getElementById("mrectangle2").innerHTML =  '<iframe src="/ads/index.php?key='+mr2+'" scrolling="no" frameborder="0" width="300" height="250"></iframe>';
}