function __construct()
{
parent::__construct();
$this->load->model('user', '', TRUE);
$this->load->model('documents', '', TRUE);
$this->load->library('user_agent');
$this->load->library('../controllers/home');
self::$session_data = $this->session->userdata('logged_in');
self::$_email = self::$session_data['email'];
self::$_type = self::$session_data['type'];
self::$_id = self::$session_data['id'];
self::$data = array('email' => self::$_email, 'type' => self::$_type, 'id' => self::$_id);
}