public function setUrl($url)
    {
        $this->_rawUrl = $url;
        if (strncasecmp($url, 'http://', 7) && strncasecmp($url, 'https://', 8) && isset($_SERVER['HTTP_HOST'])) {
            if (substr($url, 0, 1) != '/') {
                $url = substr($_SERVER['SCRIPT_NAME'], 0, strrpos($_SERVER['SCRIPT_NAME'], '/') + 1) . $url;
            }
            $url = 'http://' . $_SERVER['HTTP_HOST'] . $url;
        }
        $this->_url = str_replace('&amp;', '&', $url);
        $this->_urlParams = null;
    }