A/B Traffic Split Test based on percentage

[needlz]

I am trying to test the usefullness of 2 types of UI on a page of my website. I have created 2 separate pages (let's say index1, index2). Is there a way (or do have a code example) to redirect the user to one of the 3 pages based on percentage from a index_redirect.php page? I guess this would be a A/B traffic split test.

thanks!

[needlz]

and I meant 1 of 2 pages not 1 of 3... although testing 3 pages might be a possibility too.

rethanks!