function imageSwap()
{
	var links = getElementsByClassName("slidelink");
	for(var i=0; i < links.length; i++)
	{
		links[i].onmouseover = function()
		{
			var photo = this.getElementsByTagName("img")[0];
			photo.className = "nopic";
		}
		links[i].onmouseout = function()
		{
			var photo = this.getElementsByTagName("img")[0];
			photo.className = "showpic";
		}
	}
}

addLoadEvent(imageSwap);