function SetTableAltRows() 
{
    if (document.getElementById && document.createTextNode) 
    {
        var tables = document.getElementsByTagName("table");
        for (var i = 0; i < tables.length; i++) 
        {
            var e = tables[i];
            var even = false;
            if (e.className == "List" || e.className == "List Vertical") 
            {
                var tbodies = e.getElementsByTagName("tbody");
                for (var h = 0; h < tbodies.length; h++) 
                {
                    var trs = tbodies[h].getElementsByTagName("tr");
                    for (var j = 0; j < trs.length; j++) 
                    {
                        trs[j].className = even ? "Alt" : "";
                        even = !even;
                    }
                }
            }
        }
    }
}