function popup_img(id,param,largeur,hauteur) {
	var popup = window.open('spip.php?page=popup_img&id_document='+id,param,'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=yes,resizable=yes,width='+largeur+',height='+hauteur+',left=0,top=0');
}