function klappFestAufOderZu(elementID) {
      var dasElement = document.getElementById(elementID);
      if (dasElement.className == "festAuf") {
         dasElement.className = "zu";
         dasElement.style.visibility = "hidden";
         dasElement.style.position = "absolute";
         dasElement.style.display = "none";
      } else {
         dasElement.className = "festAuf";
         dasElement.style.visibility = "visible";
         dasElement.style.position = "static";
         dasElement.style.display = "block";
      }
   }
   function klappAuf(elementID) {
      var dasElement = document.getElementById(elementID);
      if (dasElement.className == "festAuf") {
      }else{
         dasElement.className = "auf";
         dasElement.style.position = "static";
         dasElement.style.visibility = "visible";
         dasElement.style.display = "block";
      }
   }
   function klappZu(elementID) {
      var dasElement = document.getElementById(elementID);
      if (dasElement.className == "festAuf") {
      } else {
         dasElement.className = "zu";
         dasElement.style.visibility = "hidden";
         dasElement.style.position = "absolute";
         dasElement.style.display = "none";
      }
   }
   function oeffnehref(ziel) {
      window.location.href =ziel;
   }