Code. Need to Clean js code to send data to another domain

Looking for someone who really knows the code and can clean up the Js code and basically to clean the site (donor), to absolutely guarantee the absence of intersections with the original.

On the website of 100 pages, but the code is similar or even the same. The problem is simple looking for a masterful performance. If all okay - I have been a customer for a long time, turn once, and not two.