function hideAll() {
	var navList = document.getElementById("nav");
	for (var i=0; i<navList.childNodes.length; i++) {
		var node = navList.childNodes[i];
		if (node.tagName == "LI") {
			node.className = node.className.replace(new RegExp("\s?active", "i"), "");
		}
	}
}

window.onload = function () {
	var navList = document.getElementById("nav");
	for (var i=0; i<navList.childNodes.length; i++) {
		var node = navList.childNodes[i];
		if (node.tagName == "LI") {
			node.onclick = function() {
 // Check to see if the item is already active
 var alreadyActive = false;
 if (this.className.indexOf("active") >= 0) {
 alreadyActive = true;
 }
								
				   // Hide everything
				hideAll();
								
 // If the item was already active - don't reshow
 if (!alreadyActive) {
					this.className += " active";
				   }
			}
		}
	}
}