function openCopyrightWindow(urlString,winName,width,height) {
  posx = (screen.width/2) - (width/2)
  posy = (screen.height/2) - (height/2)
  if(posx < 0) { posx = 0; }
  if(posy < 0) { posy = 0; }
  
  MM_openBrWindow(urlString,winName,'width='+width+',height='+height+',scrollbars=no,status=no,toolbar=no,resizable=no,left='+posx+',top='+posy);
}

function MM_openBrWindow(theURL,winName,features) {
  parkingDisplay = window.open(theURL,winName,features);
  parkingDisplay.focus();
}