function affichage_popup(nom_de_la_page, nom_interne_de_la_fenetre)
{
window.open (nom_de_la_page, nom_interne_de_la_fenetre, config='toolbar=no,location=no,directories=no,status=no,menubar=no,scrollbars=no,resizable=yes,copyhistory=no,width=660,height=480,screenX=150,screenY=150,top=150,left=150')
}