//javascript:fenetreCent(\"../extranet/acces.php\",\"Extranet\",1024,768,\"toolbar=no,location=no,directories=no,status=no,scrollbars=no,resizable=no,menubar=no,copyhistory=no\")
function fenetreCent(url,nom,largeur,hauteur,options) {
var haut=(screen.height-hauteur)/2;
var Gauche=(screen.width-largeur)/2;
fencent=window.open(url,nom,"top="+haut+",left="+Gauche+",width="+largeur+",height="+hauteur+","+options);
}