function showImage()
{
	if (!document.getElementById) return false;
	if (!document.getElementsByTagName) return false;
	if (!document.getElementById("gallery")) return false;
	if (!document.getElementById("largeImage")) return false;
	
	if (document.getElementById("click")) 
	{
		var elem = document.getElementById("click")
		if (elem.firstChild)
		{
			elem.firstChild.nodeValue = "Roll over an image to see a larger version."
		}
	}

	var gallery = document.getElementById("gallery");
	var links = gallery.getElementsByTagName("a");
	var img = document.getElementById("largeImage")
	for (var i = 0; i < links.length; i++) 
	{
		var href = links[i].getAttribute("href");
		links[i].imageToShow = href;
		links[i].onmouseover = function() 
		{
			img.style.backgroundImage = "url(" + this.imageToShow + ")";
			if (this.className.indexOf("On") != -1) {
				replaceClass(this, "imageOn", "imageOff");
			} else {
				replaceClass(this, "imageOff", "imageOn");
			}
			return false;
		}
		links[i].onclick = function()
		{
			img.style.backgroundImage = "url(" + this.imageToShow + ")";
			replaceClass(this, "imageOff", "imageOn");
			return false;
		}
	}
}

addLoadEvent(showImage);