function MarkMnu(MnuId)
{
    changeImage(img_path + "menu/sepgrl.jpg", "Sep"+(MnuId-1), "")
    oMnuCell = document.getElementById("MnuCell"+MnuId)
    oMnuCell.className = "MnuCellSel";
    changeImage(img_path + "menu/sepgrr.jpg", "Sep"+MnuId, "")
}

function UnMarkMnu(MnuId)
{
    changeImage(img_path + "menu/sep.jpg", "Sep"+(MnuId-1), "")
    oMnuCell = document.getElementById("MnuCell"+MnuId)
    oMnuCell.className = "MnuCell";
    changeImage(img_path + "menu/sep.jpg", "Sep"+MnuId, "")
}