Hide gateway on zero

Hide gateway is cart is Zero
If you offer a free service or a cupon for 100% of discount, why should customer select a gateway. This will hide gateway if cart = 0

Screenshots
There is no screenshot it works on server side.

Installation
Easy. You need to edit one file

Licence needed ?
No.

Download From us with support
Not Available now.

Download Direct
in viewcart.tpl