public function login($credentials)
{
$user = $credentials['user'];
$password = $credentials['password'];
$this->_client = new \Oara\Curl\Access($credentials);
$loginUrl = 'http://partner2.invia.cz/';
$valuesLogin = array(new \Oara\Curl\Parameter('ac-email', $user), new \Oara\Curl\Parameter('ac-password', $password), new \Oara\Curl\Parameter('redir_url', 'http://partner2.invia.cz/'), new \Oara\Curl\Parameter('ac-submit', '1'), new \Oara\Curl\Parameter('k2form_login', '1'));
$urls = array();
$urls[] = new \Oara\Curl\Request($loginUrl, $valuesLogin);
$this->_client->post($urls);
}