function dynIFrameSize(){


  var parentObject = parent.document.getElementById('dynamischerIFRAME').style;
  
  var THIS = document.getElementById('shop');
  
  // höhe anpassen
  
  parentObject.height=(THIS.offsetHeight)+ 20 + "px";
  
  // breite anpassen
  
  parentObject.width=(THIS.offsetWidth)+ 20 + "px";
	
}