Missing Method in ContactsController

Error: The action thongtin.htm is not defined in controller ContactsController

Error: Create ContactsController::thongtin.htm() in file: app/controllers/contacts_controller.php.

<?php
class ContactsController extends AppController {

	var $name = 'Contacts';


	function thongtin.htm() {

	}

}
?>

Notice: If you want to customize this error message, create app/views/errors/missing_action.ctp