public function getControl()
        {
        $name = $this->getHtmlName();

        $dayInput = Html::el('input')->name($name . '[day]')->id($this->getHtmlId())->value($this->day);
        $monthInput = Nette\Forms\Helpers::createSelectBox(
                array(1 => 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12),
                array('selected?' => $this->month)
            )->name($name . '[month]')

        $yearInput = Html::el('input')->name($name . '[year]')->value($this->year);

                return Html::el()->add($dayInput)->add($monthInput)->add($yearInput);
        }