//var image_links = document.getElementById("imagelinks").childNodes;
//alert("num = " + image_links.length);

var lastLinkNumber;
function setImage(index)
{
	var file = image_files[index - 1];
	var alt = image_alts[index - 1];
	
	var swapimage = document.getElementById("swapimage");
	swapimage.src = "images/dummy.gif";
	swapimage.src = "" + file;
	swapimage.alt = alt;
	
	if (lastLinkNumber)
	{
		var lastLink = getImageLink(lastLinkNumber);
		lastLink.className = null;
	}
	var link = getImageLink(index);
	link.className = "disabled";
	lastLinkNumber = index;
	link.blur();
}

function getImageLink(index)
{
	return document.getElementById("imglink" + index);
}

function prevImage()
{
	if (lastLinkNumber > 1) setImage(lastLinkNumber - 1);
}
function nextImage()
{
	if (lastLinkNumber < image_files.length) setImage(lastLinkNumber + 1);
}
if (image_alts.length > 0) setImage(1);