function openWin(URL, Wid, Hei) {
    if (isNaN(Wid)) {
        Wid = 550;
    }
    if (isNaN(Hei)) {
        Hei = 750;
    }
    aWindow = window.open(URL, "OpenWin",
        'toolbar=no,status=no,scrollbars=yes,resizable=yes,menubar=no,width=' + Wid +
        ',height=' + Hei);
}