Iíve got to deploy Google Analytics across several different websites that have 50+ pages each but each site uses the same proprietary CMS that does not have a common header, footer, or any sort of snippet that I can access. So I have to access each page via this pain-in-the-rear CMS and add the code. Iím concerned that if I ever want to change the GA code with one of the many hacks out there Iíd have to go to every single page and modify it.
Is it possible to put the GA code in an external file? I would host this external file on server A and it would be called by the website which lives on server B.