Product cycling on dynamic update.

[vlad-online]

Hi friends. Found a bug with product cycling on details page when products have same name.
Virtuemart version 3.0.12
Seem to be an error in in model product.php in function getNeighborProducts, cause it ever return previous product, when next needed.
Example http://test.glamourbags.ru/catalog/mini-collection/avinion-black-detail