jQuery - Find where sizing occurs

jQuery - Find where sizing occurs

Closed - This job posting has been filled and work has been completed.

Job Description

http://getitwebservices.com//files/isotope.css
http://getitwebservices.com//files/jquery.isotope.min.js

I am trying to find in the code where the sizing occurs for this jQuery. I am not really familiar with jQuery, but this is being used in a few of my sites, and I'd like to be able to change the base size from 110px to 140px.

If I hire you, I expect an explanation of how and where to make the change needed to resize the cells to any grid size I prefer.