function ShowSub(IdNumber) 
{
    HideSubLis();
    ShowSubBG();
    var SubLiname = 'ST' + IdNumber;
    var SubLiObg = document.getElementById(SubLiname);
    SubLiObg.style.display = 'block';
}


function HideSub() {
    HideSubLis();
    HideSubBG();
}

function ShowSubBG() {
    var SubObg = document.getElementById('SubTitle');
    SubObg.style.display = 'block';
}
function HideSubBG() 
{
    var SubObg = document.getElementById('SubTitle');
    SubObg.style.display = 'none';
}

function HideSubLis() {
    var SubObg = document.getElementById('SubTitle');
    var vLis = SubObg.getElementsByTagName('li');
    var vLiCount = vLis.length;
    if (vLiCount > 0) {
        for (var iLi = 0; iLi < vLiCount; iLi++) {
            var EachLi = vLis[iLi];
            EachLi.style.display = 'none';
        }
    }
}