run code on every page load

Hi,(Version 8.0)I have a piece of code that I'd like to run on every page load.I could create a custom RequestEvents handler ... but there are several items requested for every page load, so it'll run MANY times per page load.I could create a webpart and add it to the master file. But if somebody creates a new master file for a new section of the website, they might forget to add that webpart to it.What other options are there to run a piece of code on every page load?thank you, Rita.