function Maintenance_Alert () {
  downtime = new Date(2009, 4, 4, 17, 35, 0, 0);
  curtime = new Date();
  if (curtime.getTime() < downtime.getTime()) {
    alert ("                       !! ALERT !!\n\n" +
         "The NGMDB computer will be down for maintenance\n" +
         "between 5:30 and 6:00 PM MST, today, May 4, 2009\n"); 
  }
}