public function movedownAction()
{
// acl checks
if (!Knowledgeroot_Acl::iAmAllowed('content_' . $this->_getParam('id'), 'edit')) {
$this->_redirect('');
}
// get content and move down
$content = new Knowledgeroot_Content($this->_getParam('id'));
$content->moveDown();
$parent = $content->getParent();
//$content->save();
// redirect to page
$this->_redirect('page/' . $parent);
}