function PopupMitte(theURL, bild, breite, hoehe, text) {
  var posX=(screen.availWidth-breite)/2;
  var posY=(screen.availHeight-hoehe)/2;
  window.open(theURL+"?bild="+bild+"&text="+text,"","width=" + breite + ",height=" + hoehe + ",scrollbars=0,resizable=0,screenX=" + posX + ",screenY=" + posY + ",left=" + posX + ",top=" + posY + ""); 
  this.name = "ziel";
}

function agbs() {
  var breite = 600;
  var hoehe = 600;
  var posX=(screen.availWidth-breite)/2;
  var posY=(screen.availHeight-hoehe)/2;
  window.open("agbs.php","","width=" + breite + ",height=" + hoehe + ",scrollbars=1,resizable=0,screenX=" + posX + ",screenY=" + posY + ",left=" + posX + ",top=" + posY + ""); 
  this.name = "agbs";
}