Hi,
I want to add some php code to individual product pages to test variations of product description and user tracking.

The code I want to add, needs to be added before the <html> tag so that a cookie can be sent to track the effectiveness and results.

From what I can see I can use html_header.php in the overrides but this is for all pages and the code only needs to be added to specific pages.

I found this thread about making multiple headers for the site [http://www.zen-cart.com/forum/showthread.php?t=72451] but I'm not sure if I need to use the same code principle or not as I'm more interested in specific products and not the home page.

Any thoughts or ideas will be a big help.

TIA

Kevin