menuClassName = "menuNavigazione";

function closeSub(menu)
{
    for(var i=0; i<menu.childNodes.length; i++)
    {
        if(menu.childNodes[i].nodeName.toLowerCase() == "li")
        {
            li = menu.childNodes[i];
            li.onmouseover = li.onactivate = li.onfocus = function()
            {
                if(this.subMenu)
                    this.subMenu.className = this.subMenu.className.replace(/subMenu-off/g, "subMenu-on")
            };
            
            li.onmouseout = li.ondeactivate = li.onblur = function()
            {
                if(this.subMenu)
                    closeSub(this.subMenu)
            };
            
            for(j=0; j<li.childNodes.length; j++)
            {
                if(li.childNodes[j].nodeName.toLowerCase() == "ul" || li.childNodes[j].nodeName.toLowerCase() == "ol")
                    closeSub(li.subMenu = li.childNodes[j]);
            }
        }
    }
    
    if(menu.className!='attivo')
        menu.className = menu.className.replace(/\s?subMenu-on/g, "") + " subMenu-off";
}

window.onload = function(e)
{
    if(tags_ = document.getElementsByTagName("ul"))
        for(i=0; i<tags_.length; i++)
            if(tags_[i].className == menuClassName) closeSub(tags_[i]);
            
    if(tags_ = document.getElementsByTagName("ol"))
        for(i=0; i<tags_.length; i++)
            if(tags_[i].className == menuClassName) closeSub(tags_[i]);
}