public function getEavEntityAttributeId($entityTypeId, $attributeSetId, $attributeGroupId, $attributeId)
{
$res = Mage::getSingleton('core/resource');
$conn = $res->getConnection('core_read');
$select = $conn->select()->where('entity_type_id=?', $entityTypeId)->where('attribute_set_id=?', $attributeSetId)->where('attribute_group_id=?', $attributeGroupId)->where('attribute_id=?', $attributeId)->from($res->getTableName('eav/entity_attribute'));
$row = $conn->fetchRow($select);
return $row['entity_attribute_id'];
}