I do have a quick cart displayed in the header of each page.
When a customer is scolled down the results page it is not always visible.
Its a request from the client to add a confirmation at the point of clicking the "add to cart" button.
Have seen some jquery popups but so far they display too much information, just need a simple "your item has been added to the cart" type message which is clickable to remove or on a timeout.