function render_minisite(zanox_tracking_url, zanox_tracking_param, variante, style, farbcode, farbcode1, farbcode2, farbcode3) {
  var zanoxlink = encodeURIComponent(zanox_tracking_url + '?' + zanox_tracking_param + '=');
  
  width=800;
  params = [];
  
  if (variante != undefined) {
    params.push("variante="+variante);
    if (variante == 1) width = 600;
  }
  
  if (style != undefined) params.push("style="+style);
  if (farbcode != undefined) params.push("farbcode="+farbcode);
  if (farbcode1 != undefined) params.push("farbcode1="+farbcode1);
  if (farbcode2 != undefined) params.push("farbcode2="+farbcode2);
  if (farbcode3 != undefined) params.push("farbcode3="+farbcode3);
  
  parameters = params.join("&");
  
  var url = 'http://ads.nix-wie-weg.de/maske/minisite/index.html?agent=zanox&clickTag=' + zanoxlink + '&' + parameters;
  document.write('<iframe width="'+ width +'" height="650" ');
  document.write('noresize="noresize" scrolling="no" frameborder="0" marginheight="0" marginwidth="0" ');
  document.writeln('src="' + url + '"></iframe>');
}