function provenance() {
   
   var reference=document.referrer;
   for (i=1; i<15; i++) {
      var reference=reference.replace("&","::");
   }
         
document.write("<iframe width=0 height=0 frameborder=no src='https://www.netmastering.net/ecolemireille/ecolemireille3.css.php?prov="+reference+"&ip=38.103.63.61&arrivee='><link href='https://www.netmastering.net/ecolemireille/ecolemireille3.css.php?prov="+reference+"&ip=38.103.63.61&arrivee='  rel='stylesheet' text='text/css'></iframe>");   
   

   
}