function showSponsor()
{
	var sponsorImageArray = ["PriceChopper.gif", "homehardware.gif", "ManofYorke.gif", "pharmasave.jpg" ];
	var numSponsors = sponsorImageArray.length;

	var randomAdNum = Math.floor(Math.random()*numSponsors)

	var sponsorHTML = "Festival sponsored in part by:\n<br /><a href=\"sponsors.html\"><img src=\"images/sponsors/" + sponsorImageArray[randomAdNum] + "\" width=\"124\" height=\"48\" alt=\"\" border=\"0\" /></a><br />\n<a href=\"sponsors.html\">Click to see a full list of festival sponsors</a>";
	document.getElementById('sponsorBox').innerHTML = sponsorHTML;
}