var _elem = 'ul';
function initMenu()
{
	var menu = document.getElementById("nav");
	if (menu){
		var nodes = menu.getElementsByTagName("a");
		for (var i=0; i<nodes.length; i++)
		{
			if (nodes[i].parentNode.getElementsByTagName(_elem)[0])
			{
				nodes[i].onclick = function ()
				{
					if(this.parentNode.className.indexOf("active") !=-1)
					{
						this.parentNode.className = this.parentNode.className.replace("active", "");
					}
					else
					{
						this.parentNode.className += " active";
					}
					return false;
				}
			}
		}
	}
}


if (window.addEventListener){
	window.addEventListener("load", initMenu, false);
	}
else if (window.attachEvent){
	window.attachEvent("onload", initMenu);
	}