function popup(l,h,url) {
hauteur=Math.round((screen.availHeight-h)/2);
largeur=Math.round((screen.availWidth-l)/2);
window.open(url, "site", "toolbar=0,location=0,directories=0,status=0, scrollbars=0,resizable=0,menubar=0,top="+hauteur+",left="+largeur+",width="+l+",height="+h);
}
function twPopupImage(img, titre) {
// Compatible IE5+ / NN6+ / Mozilla
oFenetre = window.open('','Image','width=400,height=400,toolbar=no,scrollbars=no,resizable=no');
oFenetre.document.write(""+titre+"");
oFenetre.document.write("