Show all thumbnails

How can I show all thumbnails of the product on the product detail page?

Now I have 2 images of a product. One image is displayed quit large. The other one is a small thumbnail.
Is it possible to show both tumbnails? When you click on a thumbnail, it will display instead of the default large image. And when clicking on the large image itself, then the shadowbox appears and displays the biggest image, like it does now.

Hi,
one image is a default product image which is used in NSP GK4 modules and it is bigger in product view. Smaller image are extra images for this product and they are smaller. Please give me url to your page and I can give you code to make main image smaller similar to extra images but behavior will still same.

I don't have the website online yet, but I think a adjustment of the main code used in the default template will be sufficient.

As I understand the behavior will be the same. Is it possible then, if I have 2 images, which displays now as a small image and a bigger image, that the bigger image also displays as a small image? In other words: 2 small images and 1 bigger image. (one image displays twice: 1 big, 1 small)

Unfortuently not but you can add same image with diffrent name as additional one and you will achieve what you want.