function ActivateItem()
{
    if (active != -1)
    {
        list  = document.getElementById('menu');
        items = list.getElementsByTagName('li');
                               
            for (i = 0; i < items.length; i++)
                if (i == active)
                    items[i].className = 'active';
     }
}

window.onload = ActivateItem