//var loaded = false;


window.onload = function(e) {
	//var cookie = readCookie("style");
	//var title = cookie ? cookie : getPreferredStyleSheet();
	var OpenLiNode = null;
	//loaded = true;
	//setActiveStyleSheet(title);

  	// fires the tree navigation
  	var ul = document.getElementById('secondaryMenu').firstChild;
	while (ul.nodeName != 'UL') { ul = ul.nextSibling; }
	ul.id = 'nav1';
	
	
	
	
	
	 var lis = ul.childNodes;
	var addr = window.location.href;
	for (i=0; i<lis.length; i++) { //loops through array of LI's inside outer UL
		if (lis[i].nodeType!=3) {
			var el = lis[i].childNodes;
			for (x=0; x<el.length; x++) { //loops through any children that each LI may have!
				//alert(el[x].nodeName);
				if (el[x].nodeType!=3 && el[x].nodeName == 'UL') { //If the LI has a UL child node then we want to start another loop
					var childLi = el[x].childNodes; // gets the LI's inside the INNER UL
					for (z=0; z<childLi.length; z++) { //Loop through thr INNER LI's and gets the A HREF attribute (Assuming the firstChild is NOT null)
						var a = childLi[z].firstChild;
						if (a!=null) {
							if (addr==a.href){ 
							//we know now which element we want to keep open, as the href value inside the a tag is the same as in the browser window!
								OpenLiNode = lis[i];
							}
						}
					}
				}
			}
		}
	} 

	
	//amended to keep particular nav levels open!
    new TreeMenu("nav1", OpenLiNode);
	
	
	
	 
}




//////////////// TREE MENU //////////////////////

/*
 * DO NOT REMOVE THIS NOTICE
 *
 * PROJECT:   mygosuMenu
 * VERSION:   1.2.0
 * COPYRIGHT: (c) 2003,2004 Cezary Tomczak
 * LINK:      http://gosu.pl/dhtml/mygosumenu.html
 * LICENSE:   BSD (revised)
 */

function TreeMenu(id, nodeToKeepOpen) {

    this.init = function() {
        if (!document.getElementById(this.id)) {
            alert("Element '"+this.id+"' does not exist in this document. TreeMenu cannot be initialized");
            return;
        }
        this.parse(document.getElementById(this.id).childNodes, this.tree, this.id);
    }

    this.parse = function(nodes, tree, id) {
        for (var i = 0; i < nodes.length; i++) {
			if (nodes[i]!=nodeToKeepOpen) { //dont run function if the current Li is the one we want to keep open!
				if (nodes[i].nodeType != 1) {
					continue;
				}
			
				if (nodes[i].tagName.toLowerCase() == "li") {
					nodes[i].id = id + "-" + tree.length;
					tree[tree.length] = new Array();
					if (nodes[i].childNodes && this.hasUl(nodes[i].childNodes)) {
						nodes[i].className = "section";
						var a;
						if (a = this.getA(nodes[i].childNodes)) {
							a.id = nodes[i].id + "-a";
							eval("document.getElementById('"+a.id+"').onclick = function() {"+
								"self.click('"+nodes[i].id+"');"+
							"}");
						}
					} else {
						nodes[i].className = "box";
					}
				}
			
				if (nodes[i].tagName.toLowerCase() == "ul") {
					nodes[i].style.display = "none";
					id = id + "-" + (tree.length - 1);
					nodes[i].id = id + "-section";
					tree = tree[tree.length - 1];
				}
				if (nodes[i].childNodes) {
					this.parse(nodes[i].childNodes, tree, id);
				}
			} 
        }
    }

    this.hasUl = function(nodes) {
        for (var i = 0; i < nodes.length; i++) {
            if (nodes[i].nodeType != 1) {
                continue;
            }
            if (nodes[i].tagName.toLowerCase() == "ul") {
                return true;
            }
            if (nodes[i].childNodes) {
                if (this.hasUl(nodes[i].childNodes)) {
                    return true;
                }
            }
        }
        return false;
    }

    this.getA = function(nodes) {
        for (var i = 0; i < nodes.length; i++) {
            if (nodes[i].nodeType == 1) {
                if (nodes[i].tagName.toLowerCase() == "a") {
                    return nodes[i];
                }
                return false;
            }
        }
    }

    this.click = function(id) {
        e1 = document.getElementById(id + "-section");
        e2 = document.getElementById(id);
        if (e1.style.display == "none") {
            e1.style.display = "";
            e2.className = "section-open";
        } else {
            e1.style.display = "none";
            e2.className = "section";
        }
    }

    var self = this;
    this.id = id;
    this.tree = new Array();
    this.init();
}