function openSchool(url)
{
    var h = screen.height - 70;
    if (h > 975) h = 975;

    openPopup(url, 760, h);
}

function openPopup(url, w, h)
{
    window.open(url, "", "width=" + w + ",height=" + h + ",left=" + (screen.width - w) / 2 + ",top=" + (screen.height - h) / 2 + ",resizable=yes,scrollbars=yes");
}