function Init() {
    CenterContainer();
}

function CenterContainer() {
    var MainTable = $('MainTable')
    var Left = (document.viewport.getWidth() - 1000) / 2;
    var Top = (document.viewport.getHeight() - MainTable.getHeight()) / 2;
    MainTable.setStyle({
        'left': Left.toString() + 'px',
        'top': Top.toString() + 'px'
    });
}

function OpenCloseMenu(Control) {
    var Menu = $(Control);
    if (Menu.className == 'Selected') {
        Menu.className = '';
    }
    else {
        Menu.className = 'Selected';
    }
    var SubMenu = Menu.down('ul');
    if (SubMenu.style.display == 'block') { SubMenu.style.display = 'none'; }
    else { SubMenu.style.display = 'block'; }
}