This light Add-On will automatically, with CSS, add an "Out of Stock" text on the product image when the product have gone out of stock. So the product will still be visible when the quantity is set to 0 instead of it disappearing from your shop, which I think many customers find annoying if they can't find the products information when they bought something.
Although I have only tested this on osCommerce 2.3.3, I don't see any reason for why it shouldn't work with other versions as well.
Features for this Revision:
- Support for and tested on osCommerce 2.3.3
- Tested successfully on Google Chrome, Firefox and IE9
- 100% CSS based
- Screenshots included