VirtueMart is a Open-Source e-Commerce component and available at

Header Image supports the Virtue-Mart component such, that it is able to read the current Virtue-Mart Category-ID and Item-ID and to use it as the category as it would be any other Joomla! content. Use the “Smart with Virtue-Mart component” setting for “Linked to”. All other functions are as per the Smart mode of the module.