function treeLink(id) {
  //alert(id);
  //self.location.href='http://www.informer.de/index.php?id=' + id;
  ShowTeaser(id);
}

function ShowTeaser(id) {
  var teasers = document.getElementsByName("teaser_content");
  if (document.all && teasers.length==0) {
    // der pure schwachsinn, aber IE7 findet ...ByName einfach nix?!?
    var teasers = [];
    var divs = document.getElementsByTagName('div');
    for (var i=0; i<divs.length; i++) { if(divs[i].name=='teaser_content') teasers.push(divs[i])}
  }
  if ( teasers.length == 0 ) return;
  for ( var i=0; i < teasers.length; i++ ) {
    teasers[i].style.display = 'none';
  }
  document.getElementById('teaser_content_'+id).style.display = '';
}