ADD BUTTON "add to cart on the products listing page"

[gloerick]

Hello,

Have Zen 1.3.9h
would like to add the ADD TO CART BUTTONS on the multi listing part of a catagorie
such as http://www.efpsupply.com/OvaEasyEggs
here you can see ALL the items but have to select each THEN hit add at the top or bottom
OR click on the Item THEN having the add to cart.

how can I enable the add to cart button on each listing when showing all the items for that catagorie.

Thx,
Erick