$dir = opendir("var/photos");
        if ($dir == false) die("Le repertoire var/photos est introuvable .");

        //class par nom
        $files = array();
        while (false !== ($file = readdir($dir))) {
            if (stristr($file, ".jpg"))
                array_push($files, $file);
        }
        sort($files, SORT_STRING);

        $i = 0;
        $curr = 0;
        $page = array();
        $this->pages = array();
        foreach($files as $file) {
            if ($i == $nbrMiniaturePage) {
                array_push($this->pages, $page);