function showpic(datei,breite,hoehe) {
  window.open('preview.php?'+datei,'picwin','width='+breite+', height='+hoehe);
}

function mailaddy(ad) {
  var tad = '';
  var al = ad.length;
  for(i=0;i<=al;i++)
    if(ad.charAt(al-i)=='#') tad = tad + '@';
    else tad = tad + ad.charAt(al-i);

  document.write('<a href="anfrage.art">'+tad+'</a>');
}