function od(u, w, h, x, y) {
    if (!w) w = 320; if (!h) h = 200; if (!x) x = (screen.width - w) / 2; if (!y) y = (screen.height - h) / 2;
    var w = window.open(u, "_blank", "resizable=yes,scrollbars=yes,top=" + x.toString() + ",left=" + y.toString() + ",width=" + w.toString() + ",height=" + h.toString());
    w.focus();
}