Need an 0x0 iframe script

I am in need of some kind of banner(?) script that can do the following;

Show an invisible (0x0) banner
Redirect the 0x0 banner to a url, which then "open" it , also in a 0x0 iframe.

So basically each banner view will result in a visit to a url, only that a user will never see either the banner or the url.

I have the banner server set up and running, this is an extra opportunity to sell 0x0 iframe traffic to a client of mine.

I hope that I have explained it well enough

Why not just hide the iframe? <iframe style="display:none" src="yoursite.com/redirect.php"></iframe>