public function masuk(){
		if(!$this->input->is_ajax_request()) show_404();
			echo $this->input->post('email'); exit;
			$this->load->model('logbook_model', 'm_logbook');
			$this->load->model('user_model', 'm_user');
			$this->load->library('form_validation');
			$email = trim($this->input->post('email'));
			//$email	  = trim($this->input->post('email', TRUE));
			$cek = $this->m_user->get_user_by_email($email);
			if($cek->num_rows() > 0):
					redirect('home');
					$result['error']  	=  FALSE;
					$result['data']  	=  $cek->row();
			else :
					//redirect('home');
				$result['error']  	=  TRUE;
            	$result['message']  =  $email;
			endif;

			$this->output
	        ->set_content_type('application/json')
	        ->set_output(json_encode($result));

	}