function PopupImage(img, nom_image) {
titre="Agrandissement";
var top = (screen.height - 400)/2;
var left = (screen.width - 400)/2;
w=open("",'image', "top=" + top + ", left=" + left + ",width=400,height=400,status=no,toolbar=no,scrollbars=no,resizable=no");
w.document.write(""+titre+"");
w.document.write("