function Banner()
{
	var adSlot = document.getElementById ("ad");
	var zahl = Math.round(Math.random()/(1/3));

	switch (zahl) {
		case 0: adSlot.innerHTML = '<a href="http://www.my-mosaik.de/hericium-tabletten-igelstachelbart-p-408.html"><img src="banner/hericium-tabletten.jpg" width="468" height="60" alt="Hericum Tabletten" /></a>';
					   break;
	 
		case 1: adSlot.innerHTML = '<a href="http://www.my-mosaik.de/hawlik-hericium-extrakt-pilze-vitalpilze-p-201.html"><img src="banner/hericium-extrakt.jpg" width="468" height="60" alt="Hericum Extrakt" /></a>';
						 break;
	 
		case 2: adSlot.innerHTML = '<a href="http://www.my-mosaik.de/gesundheit-vitalpilze-c-29_46.html"><img src="banner/hawlik-hericum.gif" width="468" height="60" alt="Hawlik Hericum" /></a>';
						 break;
	 
						break;
		default: adSlot.innerHTML = '<a href="http://www.my-mosaik.de/gesundheit-vitalpilze-c-29_46.html"><img src="banner/hawlik-hericum.gif" width="468" height="60" alt="Hawlik Hericum" /></a>';
						 break;
	}
}