Looking for code to change how Cbutton works

Hi everyone

I am trying to locate a piece of code to edit in the Responsive Coupon Theme. When a user clicks on my Get Deal button to display the coupon and load the merchant site the user leaves my site. I would like to change this to a _blank so a new window opens instead and I retain the user.

Where is the code to alter this and what is the code to change it? The format of my links is https://shoppingdeals4u.com/out/955/link, where 955 is the id of the coupon.

Hopefully I explained this well enough, but in short I want the Cbutton to not make the user leave the site but open the merchant in a new window.

Thanks!
Jasper