Invision Power Board 2.2.1 anonym mod

What i would like the anonym mod to do is any external links posted on the Invision Power Board 2.2.1 to automatically get a "[login to view URL]" or "http://linkanon.com/r=" added on infront of the link and i would also like to be left instructions on what to edit in the php files so i can switch between the 2 just in case 1 goes down. for example the external link on this IPB 2.2.1 [login to view URL] but also instructions to how to switch it to [login to view URL] if necessary ## Deliverables 1. step by step fully working instructions on what files i need to edit on Invision Power Board 2.2.1 and what code i need to add or replace in order to get the mod to work the way i asked. ## Platform it should work for all the latest browsers like Firefox and opera. although i doubt anything broswer specific will need to be coded.