How to display controller specific javascript in rails 3.1?

I have my assets folder structure like this

assets   javascripts     products       --product.js       --productValidate.js     store       --store.js I want the project.js and projectValidate.js to be added in my application.js as a part of asset pipe-lining only when actions in product controller is called and store.js when actions in store controller is called. How can i achieve this in rails 3.1?