// JavaScript Document
function popup(img) {
var largeur=((screen.width)-800)/2;
var hauteur=((screen.height)-600)/2;
w=open("",'image','width=400,height=400,toolbar=no,scrollbars=no,resizable=yes,status=no, top='+hauteur+', left='+largeur);
w.document.write("Image taille reelle");
w.document.write("