U know how there are many networks where you don't have to bother your AM to place your pixel every time you need it done? They have a place in their panel where you can set your own pixels. So the way they do it is: they placed ONE pixel of their own on the advertiser's page which then calls all of their affiliates' pixels. I know this is how it works but I don't know the technical how of it. I'd like to know how to make a pixel that calls other pixels.