problema javascript menu

[gspereira]

alguém pode me ajudar? não consigo achar o erro

codigo:

// JavaScript Document

function show(num)

{

if (document.getElementById(num)!=null)

document.getElementById(num).style.display="block";

}

function hide(num)

{

if (document.getElementById(num)!=null)

document.getElementById(num).style.display="none";

}

function afficher(num)

{

for (idx=1;idx<8;idx++)

{

submenu="submenu"+idx;

if (idx==num)

{

show(submenu);

}

else

{

hide(submenu);

}

}

}

function cacher()

{

for (idx=1;idx<5;idx++)

{

submenu="submenu"+idx;

{

hide(submenu);

}

}

}

var isMouseOver = '0';

function fOnMouseOver(num)

{

clearInterval();

isMouseOver = '1';

if (num!=''){

afficher(num);

} else {

cacher();

}

}

function fOnMouseOver2()

{

clearInterval();

isMouseOver = '1';

}

function fOnMouseOut()

{

isMouseOver = '0';

window.setTimeout("fOnSetInterval()", 10000);

}

function fOnSetInterval()

{

if (isMouseOver == '0') {

clearInterval();

cacher();

}

}

function setActiveMenu(num)

{

if (num!=''){

menuitem="menu"+num;

submenuitem="submenu"+num;

if (document.getElementById(menuitem)!=null)

{

document.getElementById(menuitem).style.background='#DDDDDD';

document.getElementById(menuitem).style.color='#000000';

}

show(submenuitem);

}

}

ERRO: Détails de l’erreur de la page Web

Agent utilisateur : Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.1; WOW64; Trident/4.0; SLCC2; .NET CLR 2.0.50727; .NET CLR 3.5.30729; .NET CLR 3.0.30729; Media Center PC 6.0; OfficeLiveConnector.1.5; OfficeLivePatch.1.3; .NET4.0C)

Horodateur : Tue, 29 Mar 2011 17:49:57 UTC

Message : Cet objet ne gère pas cette propriété ou cette méthode

Ligne : 19

Caractère : 4

Code : 0

URI : http://www.mae-mali....scripts/menu.js

OBRIGADA!!!!