function window_open(filename, name, scroll,  x, y, left, top)
    {
    windowops = eval("'toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=" + scroll + ",resizable=no,copyhistory=yes,width=" + x + ",height=" + y + ",left=" + left + ",top=" + top + "'");
    window.open(filename, name, windowops);
    return;
    }