function enableDropdownMenuForIE()
{
    uls = document.getElementsByTagName('ul');

    for(i = 0; i < uls.length; i++)
    {
        if (uls[i].className == 'ul')
        {
            var lis = uls[i].getElementsByTagName('li');

            for (j = 0; j < lis.length; j++)
            {
                if (lis[j].lastChild.tagName == 'UL')
                {
                    lis[j].onmouseover = function() { this.lastChild.style.visibility = 'visible'; }
                    lis[j].onmouseout = function() { this.lastChild.style.visibility = 'hidden'; }
                }
                
            }
        }
    }
}