Social Sharing buttons in box_products.inc.php

I want to modify the links on the social sharing buttons. I just want to add a get variable for a referral link. I found the html in box_products.inc.php but can not find how the link is generated. You guys have been so helpful on other posts I thought I would ask here how to modify the link that is being shared by the social-bookmarks section

The code is generated by scripts via http://www.addthis.com/. Visit their site to compose a new look.

Thank you for the quick reply. I knew I was missing something. You guys are great help. This is a great platform but the documentation is not up to speed. I think it is awesome that you guys answer the forum so quickly with helpful info.

Thanks. =)

And.. we don't write the documentation. You do ;)