function openOne(n) {
    var cur = document.getElementById('CurrentGroup');
    var count = document.getElementById('count');
    var el = document.getElementById('subDiv' + n);
    if (el.style.display == 'none')
    { el.style.display = 'block'; cur.value = n; }
    else if (el.style.display == 'block') {
        el.style.display = 'none';
    }
    for (var i = 1; i <= count.value; i++) {
        var elt = document.getElementById('subDiv' + i);
        if (i != n && elt.style.display == 'block') {
            elt.style.display = 'none';
        }
    }
};
window.onload = function() { var cur = document.getElementById('CurrentGroup'); openOne(cur.value); }