What does it do?
Include this PHP script on a page, then every time the page is reloaded, a different page will appear in the iframe.
How to use it
Fill a text file (urls.txt) with URLS, one per line. Include the script on a page and it will pick one at random to display.
I want to View the source
Scroll down the page or click here for the PHP source code. Also, you can take a look at what the text file containing the URL's looks like.