public function indexAction()
{
$this->view->renditions = $this->_helper->service('image.rendition')->getRenditions();
$request = $this->getRequest();
if ($request->isPost()) {
$this->_helper->service('image.rendition')->setRenditionsLabels($this->getLabels());
$this->_helper->service('image.rendition')->setRenditionsOrder($request->getPost('order', array()));
$this->_helper->json(array());
}
}