var zeigs = "nope";
  var xfer = unescape(self.location.search);
  xfer = xfer.substring(1,xfer.length);

  function toggo(dv)
  {
    if (zeigs != "nope") { self.document.getElementById(zeigs).style.display='none'; }
    zeigs = dv;
    self.document.getElementById(zeigs).style.display='block';
  }

  function tock()
  {
    self.document.getElementById('is01').style.display='block';
    self.document.getElementById('is02').style.display='block';
    self.document.getElementById('is03').style.display='block';
    self.document.getElementById('is04').style.display='block';
//    self.document.getElementById('is05').style.display='block';
//    self.document.getElementById('is06').style.display='block';
//    self.document.getElementById('is07').style.display='block';
    self.document.getElementById('is08').style.display='block';
    self.document.getElementById('is09').style.display='block';
    self.document.getElementById('is10').style.display='block';
//    self.document.getElementById('is11').style.display='block';
    self.document.getElementById('is12').style.display='block';
    self.document.getElementById('is13').style.display='block';
//    self.document.getElementById('is14').style.display='block';
    self.document.getElementById('is15').style.display='block';
    self.document.getElementById('yo0').style.display='none';
    self.document.getElementById('yo1').style.display='block';
  }