// menu items

	function Navigation() {									
		this.items = new Array();
		this.addItem = navigation_addItem;
	}

	function Item(id, url, target) {						
		this.id = id;
		this.url = url;
		this.target = '';
		if (target != null) this.target = target;
	}
	
	function navigation_addItem(id, url, target) {	// adds a resource 
		this.items[this.items.length] = new Item(id, url, target);
	}

	Navigation.prototype.addExtra = function(id) {   // adds a image without a link
	this.items[this.items.length] = new Item(id, 0);
	}
	
	
	function createHTML() {
		/* if (!NN4) nav.items = randomizeArray(nav.items); */
		
		str = '';
		
		str += '<table border="0" cellpadding="0" cellspacing="0">';
		str += '<tr>';
		str += '<td><td><img src="../spacer.gif" width="10" height="5" border="0"></td></td>\n';
		for (var i=0; i<nav.items.length; i++) {
			str += '<td><a href="' + nav.items[i].url + '" onMouseover="changeImage(\'' + nav.items[i].id + '\', \'\', \'' + nav.items[i].id + '\/menuitem_a.gif\');" onMouseout="changeImage(\'' + nav.items[i].id + '\', \'\', \'' + nav.items[i].id + '\/menuitem.gif\');"';
			if (nav.items[i].target != '') str += ' target="' + nav.items[i].target + '"';
			str += '>';
			str += '<img id="' + nav.items[i].id + '" name="' + nav.items[i].id + '" src="' + nav.items[i].id + '/menuitem.gif" border="0" alt=""></a></td>\n';
		}
		str += '</tr></table>';
		
		document.write(str);
	}