function fairinternet(user) {
    r = document.referrer;
    rr = user + '*';
    h = '0123456789abcdef';
    if (r) {
      for (i=0; i<r.length; i++) {
        c = r.charCodeAt(i);
        bh = parseInt(c / 16);
        bl = c - (bh * 16);
        rr += h.charAt(bh) + h.charAt(bl);
      }
    }
    s = 'http://www.fairinternet.de/service/' + rr + '.gif';    
    i = new Image(1,1);
    i.src = s;
    i.onload = function() { fvoid(); }
  }
  function fvoid() {
    //alert('src=' + i.src);
    return;
  }