Linking to sponsors

[CelticTiger]

I'm not talking about redirecting the surfer that come to my pages but those that click links to my sponsors (which aren't blind links)

Let me draw you a map

Surfer comes to one of my freesites -> they click a sponsor link -> this takes them to a html page which is set to immediately take them to the sponosr. If this sponsor performs poorly or the program goes belly up I change the site they get taken to.

I just want to know is there a better way of this type of "sponsor link management" using php or something.