function Show(objId, x) {
    var obj = document.getElementById(objId);
    obj.style.opacity = x;
    obj.style.filter = 'alpha(opacity=' + x * 100 + ')';
}
function Hide(objId, x) {
    var obj = document.getElementById(objId);
    obj.style.opacity = x;
    obj.style.filter = 'alpha(opacity=' + x * 100 + ')';
}