/*

 * Dynamic Menu

 * Written by Andy Peatling - http://www.cssdev.com/

 * April 1, 2006.

 */



addLoadEvent(collapseMenu);

addLoadEvent(prepareMenu);



function collapseMenu(node) {

	if (!document.getElementById) return false;

	if (!document.getElementById("menu")) return false;

	if (!node) node = document.getElementById("menu");



	if (node.childNodes.length > 0) {

		for (var i=0; i<node.childNodes.length; i++) {

			var child = node.childNodes[i];

			if (child.nodeName == "UL") {

					child.style.display = "none";

			}

			collapseMenu(child);

		}		

	}



}



function prepareMenu() {

	if (!document.getElementById || !document.getElementsByTagName) return false;

	if (!document.getElementById("menu")) return false;



	var links = document.getElementById("menu").getElementsByTagName("a");

	for (var i=0; i<links.length; i++) {		

		links[i].onclick = function() {

			toggleMenu(this.parentNode.getElementsByTagName("UL")[0], this.href);

			return false;

		}

	}

}



function toggleMenu(node, link) {

	if (!document.getElementById) return false;

	if (!link) return false;

	if (!node) location.href = link.href;



	// Collapse all nodes, and only show clicked node (when clicking top level of menu)

	if (node.parentNode.parentNode.id == "menu") {

		hideTopLevels();

	}

	

	if (node.style.display == "") {

		//Effect.BlindUp(node, {duration: 0.3});

	} else {

		Effect.BlindDown(node, {duration: 0.2});

	}

}



function hideTopLevels() {

	if (!document.getElementById) return false;

	if (!(node = document.getElementById("menu"))) return false;	

	

	if (node.childNodes.length > 0) {

		for (var i=0; i<node.childNodes.length; i++) {

			var child = node.childNodes[i];

			for(var j=0; j<child.childNodes.length; j++) {

				var grandchild = child.childNodes[j];

				if (grandchild.nodeName == "UL") {

					if (grandchild.style.display == '') {

						Effect.BlindUp(grandchild, {duration: 0.2});

					}

				}

			}

		}		

	}

}