Problemas com Menu

[gimiotto 0]

Olá...

Sou meio inexperiente no assunto, e estou com probleminhas na execução do meu menu... Não sabia se deveria postar aqui na parte de js.

 

1-Ele não funciona nada no Chrome

2-Eu gostaria que ele abrisse em cascata, mas apenas um tópico está funcionando, o de Graduação, o resto não fecha, nem abre.

3-Eu gostaria que os menus aparecessem primeiramente fechados, e só quando clicasse abrissem os submenus.

 

A minha página é http://www.demar.eel.usp.br/menu.html

 

e o código em javascript da página tá aí:

 

var remember = true; //Remember menu states, and restore them on next visit.
var contractall_default= false; //Should all submenus be contracted by default? (true or false)

var menu, titles, submenus, arrows, bypixels;
var heights = new Array();

var n = navigator.userAgent;
if(/Opera/.test(n)) bypixels = 2;
else if(/Firefox/.test(n)) bypixels = 3;
else if(/MSIE/.test(n)) bypixels = 2;

/////DD added expandall() and contractall() functions/////

function slash_expandall(){
if (typeof menu!="undefined"){
for(i=0; i<Math.max(titles.length, submenus.length); i++){
	titles[i].className="title";
	arrows[i].src = "menus1/exp-preto.gif";
	submenus[i].style.display="";
	submenus[i].style.height = heights[i]+"px";
}
}
}

function slash_contractall(){
if (typeof menu!="undefined"){
for(i=0; i<Math.max(titles.length, submenus.length); i++){
	titles[i].className="titlehidden";
	arrows[i].src = "menus1/fecha-preto.gif";
	submenus[i].style.display="none";
	submenus[i].style.height = 0;
}
}
}


/////End DD added functions///////////////////////////////


function init(){
   menu = getElementsByClassName("sdmenu", "div", document)[0];
   titles = getElementsByClassName("title", "span", menu);
   submenus = getElementsByClassName("submenu", "div", menu);
   arrows = getElementsByClassName("arrow", "img", menu);
   for(i=0; i<Math.max(titles.length, submenus.length); i++) {
       titles[i].onclick = gomenu;
       arrows[i].onclick = gomenu;
       heights[i] = submenus[i].offsetHeight;
       submenus[i].style.height = submenus[i].offsetHeight+"px";
   }
   if(remember)
			restore()
	else if (contractall_default) //DD added code
			slash_contractall() //DD added code
}

function restore() {
   if(getcookie("menu") != null) {
       var hidden = getcookie("menu").split(",");
       for(var i in hidden) {
           titles[hidden[i]].className = "titlehidden";
           submenus[hidden[i]].style.height = "0px";
           submenus[hidden[i]].style.display = "none";
           arrows[hidden[i]].src = "menus1/fecha-preto.gif";
       }
   }
}

function gomenu(e) {
   if (!e)
       var e = window.event;
   var ce = (e.target) ? e.target : e.srcElement;
   var sm;
   for(var i in titles) {
       if(titles[i] == ce || arrows[i] == ce)
           sm = i;
   }
   if(parseInt(submenus[sm].style.height) > parseInt(heights[sm])-2) {
       hidemenu(sm);
   } else if(parseInt(submenus[sm].style.height) < 2) {
       titles[sm].className = "title";
       showmenu(sm);
   }
}

function hidemenu(sm) {
   var nr = submenus[sm].getElementsByTagName("a").length*bypixels;
   submenus[sm].style.height = (parseInt(submenus[sm].style.height)-nr)+"px";
   var to = setTimeout("hidemenu("+sm+")", 30);
   if(parseInt(submenus[sm].style.height) <= nr) {
       clearTimeout(to);
       submenus[sm].style.display = "none";
       submenus[sm].style.height = "0px";
       arrows[sm].src = "menus1/fecha-preto.gif";
       titles[sm].className = "titlehidden";
   }
}

function showmenu(sm) {
   var nr = submenus[sm].getElementsByTagName("a").length*bypixels;
   submenus[sm].style.display = "";
   submenus[sm].style.height = (parseInt(submenus[sm].style.height)+nr)+"px";
   var to = setTimeout("showmenu("+sm+")", 30);
   if(parseInt(submenus[sm].style.height) > (parseInt(heights[sm])-nr)) {
       clearTimeout(to);
       submenus[sm].style.height = heights[sm]+"px";
       arrows[sm].src = "menus1/exp-preto.gif";
   }


}

function store() {
   var hidden = new Array();
   for(var i in titles) {
       if(titles[i].className == "titlehidden")
           hidden.push(i);
   }
   putcookie("menu", hidden.join(","), 30);
}

function getElementsByClassName(strClassName, strTagName, oElm){
   var arrElements = (strTagName == "*" && document.all)? document.all : oElm.getElementsByTagName(strTagName);
   var arrReturnElements = new Array();
   strClassName = strClassName.replace(/\-/g, "\\-");
   var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
   var oElement;
   for(var i=0; i<arrElements.length; i++){
       oElement = arrElements[i];      
       if(oRegExp.test(oElement.className)){
           arrReturnElements.push(oElement);
       }   
   }
   return (arrReturnElements)
}

function putcookie(c_name,value,expiredays) {
   var exdate=new Date();
   exdate.setDate(exdate.getDate()+expiredays);
   document.cookie = c_name + "=" + escape(value) + ((expiredays==null) ? "" : ";expires="+exdate);
}

function getcookie(c_name) {
   if(document.cookie.length > 0) {
       var c_start = document.cookie.indexOf(c_name + "=");
       if(c_start != -1) {
           c_start = c_start + c_name.length + 1;
           var c_end = document.cookie.indexOf(";",c_start);
           if(c_end == -1)
               c_end = document.cookie.length;
           return unescape(document.cookie.substring(c_start, c_end));
       }
   }
   return null;
}

window.onload = init;
if(remember) window.onunload = store;

[Thiago Souza_63114 1]

Meu amigo não é melhor você criar em css esse menu e mais fácil e rápido