static protected function setHeaders($viewObj)
    {
        // get the cache attribute
        // if cache = browser, set the cache control in headers
        header('Pragma:', true);
        header('Cache-Control: max-age=3600', true);
        $offset = 60 * 60 * 24 * - 1;
        $ExpStr = "Expires: " . gmdate("D, d M Y H:i:s", time() + $offset) . " GMT";
        header($ExpStr, true);
    }