/*
	==========================================	
	CONFIGURAÇÕES DO MENU 	
	==========================================
	*/
	
	// ======
	// icones
	// ======
	
	var ICONE_DO_ITEM_ABERTO  = "/brasiliana/templates/htm/brasiliana/img/setacima.gif"; 
	var ICONE_DO_ITEM_FECHADO = "/brasiliana/templates/htm/brasiliana/img/setabaixo.gif"; 
		
	/*
	==========================================	
	*/	

	// =============
	// inicia o menu
	// =============
	
	function startMenu () {
		
		var menu, menuChildNodes, itemChildNodes;
		
		menu = document.getElementById("menu");
		menuChildNodes = menu.childNodes;
		
		// recolhendo submenus		
		for (var i = 0; i < menuChildNodes.length; i++) {
			if (menuChildNodes[i].nodeName == "LI") {
				itemChildNodes = menuChildNodes[i].childNodes;
				for (var j = 0; j < itemChildNodes.length; j++) {
					if (itemChildNodes[j].nodeName == "UL") {
						itemChildNodes[j].style.display = "none";
					}
				}
			}
		}
		
		// adicionando comportamento		
		var ulE, liElements, aElements;
		var ulElements = document.getElementsByTagName("UL");
		
		for (var i=0; i < ulElements.length; i++) {
					
			ulE = ulElements[i].className; 					
			
			// elementos: UL (níveis 1, 2 e 3)
			if (ulE == "n1" || ulE == "n2" || ulE == "n3") {				
				liElements = ulElements[i].childNodes; 				
				
				// elementos: LI
				for (var j=0; j < liElements.length; j++) {
					if (liElements[j].tagName == "LI") {
						aElements = liElements[j].childNodes;
						
						// elementos: A
						for (var l=0; l < aElements.length; l++) {							
							if (aElements[l].tagName == "A") {								
								
								// comportamento de um item que tem subitens
								if (aElements[l].id) {
									if (aElements[l].id.indexOf("submenu") != -1) {
										addEvent(aElements[l], "click", updateMenu);
										setIcone(aElements[l], ICONE_DO_ITEM_FECHADO);
									}									
								}
							}
						}
					}
				}  	
			}			
		}
		
		
		
		var itemSelecionado = document.getElementById("menu-item-selecionado");
		if (itemSelecionado) {
			updateMenu (itemSelecionado.parentNode.parentNode.parentNode.firstChild.id);
		}
		
	}
	
	// =============
	// atualiza menu 
	// =============
	
	function updateMenu (e) {		

		var id, n, aElement;

		if (typeof(e) == "string") {
			
			id = e;		
			
			if (document.getElementById(id).parentNode.parentNode.parentNode.nodeName == "LI") {
				document.getElementById(id).parentNode.parentNode.style.display = "block";
				setIcone (document.getElementById(id).parentNode.parentNode.parentNode.childNodes[0], ICONE_DO_ITEM_ABERTO);
			}
		
		// quando a função é chamada ao clicar em um item do menu					
		} else {			
			
			var e = (typeof(e)=='undefined') ? window.event : e;
			var t = e.target ? e.target : e.srcElement;
			if (t.nodeType == 3) t = t.parentNode;
			id = t.id;
		}
	
		var element = document.getElementById(id);
		var li = element.parentNode;
		var liChildNodes = li.childNodes;
	
		// recolhe submenus extendidos				
		for (var i = 0; i < li.parentNode.childNodes.length; i++) {			
			if (li.parentNode.childNodes[i].nodeName == "LI") {				
				for (var j = 0; j < li.parentNode.childNodes[i].childNodes.length; j++) {					
					if (li.parentNode.childNodes[i].childNodes[j].nodeName == "UL") {						
						for (var l = 0; l < li.parentNode.childNodes[i].childNodes[j].parentNode.childNodes.length; l++) {
							if (li.parentNode.childNodes[i].childNodes[j].parentNode.childNodes[0].nodeName == "A") {
								displayNone = li.parentNode.childNodes[i].childNodes[j].parentNode.childNodes[0].id != id;
							}
						}						
						if(displayNone) {
							li.parentNode.childNodes[i].childNodes[j].style.display = "none";
							setIcone (li.parentNode.childNodes[i].childNodes[0], ICONE_DO_ITEM_FECHADO);
						}
					}
				}
			}
		}
	
		// recolhe ou extende submenu		
		for (var i = 0; i < liChildNodes.length; i++) {		
			if (liChildNodes[i].nodeName == "UL") {				
				if (liChildNodes[i].style.display == "block") {					

					liChildNodes[i].style.display = "none";					
					setIcone (li.childNodes[0], ICONE_DO_ITEM_FECHADO);					
					if(liChildNodes[i].parentNode.parentNode.parentNode.childNodes[0].id == "undefined") {
						id = null;
					} else {
						id = liChildNodes[i].parentNode.parentNode.parentNode.childNodes[0].id;
					}				

				} else {					

					liChildNodes[i].style.display = "block";					
					setIcone (li.childNodes[0], ICONE_DO_ITEM_ABERTO);					
					for (var j = 0; j < liChildNodes[i].childNodes.length; j++) {						
						if (liChildNodes[i].childNodes[j].nodeName == "LI") {							
							for (var l = 0; l < liChildNodes[i].childNodes[j].childNodes.length; l++) {								
								if (liChildNodes[i].childNodes[j].childNodes[l].nodeName == "UL") {
									liChildNodes[i].childNodes[j].childNodes[l].style.display = "none";
									setIcone (liChildNodes[i].childNodes[j].childNodes[0], ICONE_DO_ITEM_FECHADO);
								}
							}
						}
					}
				}
			}
		}		
	}
	
	// ============================
	// configura o icone de um item
	// ============================
	
	function setIcone (elemento, icone) {
		elemento.style.backgroundImage = "url("+ icone +")";
		elemento.style.backgroundPosition = "top right";
		elemento.style.backgroundRepeat = "no-repeat";	
	}			

	/*
	==================================================
	inicia o menu com o evento onload da objeto window 
	==================================================
	*/
	
	function init () {
		startMenu();
	}
	
	function addEvent(obj, evType, fn){
		var w3DOM = obj.addEventListener;
		var ieDOM = obj.attachEvent;
		if (w3DOM)  obj.addEventListener(evType, fn, true)
		if (ieDOM)  obj.attachEvent("on"+evType, fn)
	}
	
	addEvent(window, "load", init);
	
	// fim	
	
	// menu de acesso rápido
	function visitURL(lurl){
		window.location=lurl;
		
	}