This addon provides a way to announce a quick sale by placing a banner, either an image or text, below the header. It doesn't have any code built-in for creating sales but that can be done with the specials section in admin->Catalog or by installing one of the many coupon related addons. It is compatible with all versions of osCommerce. Images are included to give an idea of what it looks like in use.
The support thread is at:http://forums.oscommerce.com/topic/349666-daily-specials/