Two objects:
1) vlad's shop
2) PayPal and Credit Cards
Because the two elements we are looking for have different relationships in the node we have to use "AxisName" (ancestor\parent\child).
This xpath verifies that we are on "Vlad's Page" and the page contains the credit cards accepted image.
//img[@alt='PayPal and Credit Cards']/ancestor::* //a[contains(@href,"top_trail")]