function openDisclaimer() {
  controlWindow=window.open("./disclaimer.html","Control","toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=yes,width=400,height=300,resize=yes");
  }
  
function ParkFanPicture(PictureNR,w,h) {
  var myname = 'ParkFanPicture';
  var mypage = './picture.html?id='+ PictureNR;

  if(screen.width) {
    var winl = (screen.width-w)/2;
    var wint = (screen.height-h)/2;
    }
  else {
    winl = 0;
    wint =0;
    }
  if (winl < 0) winl = 0;
  if (wint < 0) wint = 0;
  var settings = 'height=' + h + ',';
  settings += 'width=' + w + ',';
  settings += 'top=' + wint + ',';
  settings += 'left=' + winl + ',';
  win = window.open(mypage,myname,settings);
  win.window.focus();
  }