//dynamic navigation
initNav = function() {
	var navRoot = document.getElementById("left-nav");
	var lis = navRoot.getElementsByTagName("a");
	for (var i=0; i<lis.length; i++)
	{
		if (lis[i].parentNode.parentNode.id == "left-nav")
		{
			lis[i].onclick = function()
			{
				items = this.parentNode;
				if (items.className == "active") items.className = items.className.replace("active", "")
				else
				{
					if (this.parentNode.getElementsByTagName("ul").length != 0) items.className += "active";
				}
			}
		}
	}
}
if (window.addEventListener)
	window.addEventListener("load", initNav, false);
else if (window.attachEvent)
	window.attachEvent("onload", initNav);