private function nodeToArray(Varien_Data_Tree_Node $node, $mediaUrl, $baseUrl)
 {
     $result = array();
     $thumbnail = '';
     try {
         $thumbImg = $node->getThumbnail();
         if ($thumbImg != null) {
             $thumbnail = $mediaUrl . 'catalog/category/' . $node->getThumbnail();
         }
     } catch (Exception $e) {
     }
     $result['category_id'] = $node->getId();
     $result['image'] = $mediaUrl . 'catalog/category/' . $node->getImage();
     $result['thumbnail'] = $thumbnail;
     $result['description'] = strip_tags($node->getDescription());
     $result['parent_id'] = $node->getParentId();
     $result['name'] = $node->getName();
     $result['is_active'] = $node->getIsActive();
     $result['children'] = array();
     if (method_exists('Mage', 'getEdition') && Mage::getEdition() == Mage::EDITION_COMMUNITY) {
         $result['url_path'] = $baseUrl . $node->getData('url_path');
     } else {
         $category = Mage::getModel('catalog/category')->load($node->getId());
         $result['url_path'] = $category->getUrl();
     }
     foreach ($node->getChildren() as $child) {
         $result['children'][] = $this->nodeToArray($child, $mediaUrl, $baseUrl);
     }
     return $result;
 }