function OnLoadMenu()
{
    if (document.all && document.getElementById)
    {
        navRoot = document.getElementById("Nav");
        if (navRoot)
        {
            for (i = 0; i < navRoot.childNodes.length; i++)
            {
                node = navRoot.childNodes[i];
                if (node.nodeName == "LI")
                {
                    node.onmouseover = function() { this.className += " over"; }
                    node.onmouseout = function() { this.className = this.className.replace(" over", ""); }
                }
            }
        }
    }
}