function advOpen(openUrl, openWidth, openHeight) {
  if (screen) {
    var s   = screen;
    var srw = s.width;
    var srh = s.height;
  } else {
    var srw = 800;
    var srh = 600;
  }
  
  if ((openWidth>srw) || (openHeight>srh)) {
    openScroll  = "1";
    if (openWidth>srw)  { openWidth=srw-5; }
    if (openHeight>srh) { openHeight=srh-5; }
  } else {
    openScroll  = "0";
  }
  srw     = (srw - openWidth)/2;
  srh     = (srh - openHeight)/5;

  var UTCstring;
  Today = new Date();
  UTCstring = Today.getUTCHours()*Today.getUTCMinutes()*Today.getUTCSeconds();
  
  var openName;
  openName        = "openPopup"+UTCstring;
  openParameters  = "left="+srw+",top="+srh+",outerHeight=0,innerWidth,width="+openWidth+",innerHeight,height="+openHeight+",scrollbars=0,titlebar=1,resizable=0";

  if (window.openPopup) { if (!window.openPopup.closed) { window.openPopup.close(); } }
  
  openPopup = open(openUrl, openName, openParameters);

  return false;
}