protected function _prepareValueOptions()
{
if ($this->getAttribute() === 'attribute_set_id') {
$entityTypeId = Mage::getSingleton('eav/config')->getEntityType(Mage_Catalog_Model_Product::ENTITY)->getId();
$selectOptions = Mage::getResourceModel('eav/entity_attribute_set_collection')->setEntityTypeFilter($entityTypeId)->load()->toOptionArray();
$this->setData('value_select_options', $selectOptions);
}
return parent::_prepareValueOptions();
}
