var url_certif="http://www.adultcertif.com" ; /* Root directory without '/' at the end.*/
var logo_certif="http://www.adultcertif.com/label.gif";

function count_certif(id, url)
{
  if(document.images)
  (new Image()).src=url + '/in.php?url_id=' + id;
  return true;
}

document.write("<a href=\'"+ url_certif +"\' target=\'_blank\' onClick=\"count_certif(\'" + id_certif +"\', \'" + url_certif +"\');\"><img src=\'" + logo_certif +"\' border=0 alt=\'" + url_certif+"\'></a>") ;