How to diaply random ad formats - code available

I decided that instead of testing one format per month, I'm going to pick four different formats and test them all concurrently, randomly picking which one to display.

Here's the code to do it:
http://www.justin-cook.com/wp/2006/04/19/displaying-and-tracking-multiple-random-adsense-formats/

apparently I can't spell today. The title should be "How to display..."

 

How will you track which one performs the best?

 

Like I explain in the article, I created a channel for each one. The code switches the size and channel

 

Great idea, and love the site by the way

 

thanks! I appreciate the compliment!

 

Thanks. I really liked it.

 

Nice idea. I will try this later.

 

Has it made any difference to your site income?

 

I've only had it running for a day, so...
I'll let you know in a couple of weeks