public function getpromotionAction()
{
$this->_helper->layout()->disableLayout();
$this->_helper->viewRenderer->setNoRender();
if ($this->getRequest()->isXmlHttpRequest()) {
$promotion_id = $this->_getParam('promotion_id');
$promotion = new PAP_Model_Promotion();
$data = $promotion->getViewRecord($promotion_id);
$this->_helper->json($data);
}
}