function connexion(elmt){

     if (elmt==4){
       page_url='http://www.france-orchestres.com/connexion.php?cas=4';
     } 
     var pTemp=window.open(page_url, 'connexion', 'left=330, top=100, width=400, height=558, toolbar=no,location=no,directories=no,status=no,menubar=no,resizable=no,copyhistory=no,scrollbars=no');
   	 pTemp.document.close();
     pTemp.focus();
}