Add to cart in the product list takes me to the product info page

I have all but completed my website but there is just one thing I just can't figure out:

I have set the admin so that the shopping cart does not appear after each 'add to cart' instead the cart is in the sidebox, BUT

Selecting the 'add to cart' in the produst list adds the product to the cart but then takes me to the product info page....I want the product added to the cart and return to the same place ie the product list page.

If I enter the New Products and select 'buy now' the product is added to the cart and the shopper remains in the new products screen and is not taken to the product info page. This is what I would like to happen when the 'add to cart' button is selected.

link: www.highlandspapercraft.com/hpwholesale

I have managed to work out everything else but I have spent a couple of days on this one and just cant see it! I have been through all the admin options...yes EVERY ONE and maybe I have been looking too long or in the wrong place.

Any help appreciated.

Thanks
Suzanne