It is necessary for several of our laptops to operate on both our own and customer-based networks. This often involves switching proxy settings, which we did via a custom proxy.pac file at first (after some help from you here). Now, one of the networks we use has their own proxy.pac that we must use which means that currently, we have to manually change our proxy.pac location for that network.
So, is there a way to write a proxy.pac such that it defers to another proxy.pac in some circumstances?