function toggleTeaser(aParent, anImg) {

  tmp = new Image();

  for (i=0;i<aParent.childNodes.length;i++) {
    try { 
      aName = aParent.childNodes[i].getAttribute('name');
      if (aName=='teasertextlang')
        aText = aParent.childNodes[i];
    } catch(e) {}
  }

  try {
    if (aText.style.display=='none') {
      aText.style.display='block';
      tmp.src='/fileadmin/images/icons/link_close.png';
    }
    else {
      aText.style.display='none';
      tmp.src='/fileadmin/images/icons/link.png';    
    }
  anImg.src=tmp.src;  
  } catch(e) {}

}