function initNav()
{
	var node_div = document.getElementById("nav");
	if (node_div) {
		var nodes = node_div.getElementsByTagName("img");
		for (var i=0; i<nodes.length; i++)
		{
			if (nodes[i].parentNode.className != "active") {
				nodes[i].onmouseover = function()
				{
					this.src = this.src.replace(".gif", "-hover.gif");
				}
				nodes[i].onmouseout = function()
				{
					this.src = this.src.replace("-hover.gif", ".gif");
				}
			}
		}
	}
}
if (window.addEventListener) window.addEventListener("load", initNav, false);
else if (window.attachEvent) window.attachEvent("onload", initNav);