function doresize() 
 {
   f = document.getElementById("regeln");
   if (f)
   {
     f.style.height = "50px"; /* necessary for firefox */
     f.style.height = f.contentWindow.document.body.scrollHeight + 10 + "px";
   }

   f = document.getElementById("bedienung");
   if (f)
   {
     f.style.height = "50px"; /* necessary for firefox */
     f.style.height = f.contentWindow.document.body.scrollHeight + 10 + "px";
   }

   f = document.getElementById("scores");
   if (f)
   {
     f.style.height = "50px"; /* necessary for firefox */
     f.style.height = f.contentWindow.document.body.scrollHeight + 10 + "px";
   }
 }

 window.onload = doresize;
 window.onresize = doresize;