protected function _getSelectedNodes() { if (version_compare(Mage::getVersion(), '1.4.0.0', '>=')) { return parent::_getSelectedNodes(); } if ($this->_selectedNodes === null) { $this->_selectedNodes = array(); $root = $this->getRoot(); foreach ($this->getCategoryIds() as $categoryId) { if ($root) { $this->_selectedNodes[] = $this->getRoot()->getTree()->getNodeById($categoryId); } } } return $this->_selectedNodes; }