function show_teaser_an(divid)
{document.getElementById('content_center_teaser').style.display='none';document.getElementById('content_center_teaser_ro').style.display='block';return true;}
function show_teaser_aus(divid)
{document.getElementById('content_center_teaser').style.display='block';document.getElementById('content_center_teaser_ro').style.display='none';return true;}