I looked at this thread http://www.zen-cart.com/forum/showth...ttribute+popup which is exactly what I want to do.

I've tried looking at the main_template_vars_images in modules/pages/product_info and tried to fathom the logic to insert it into the main_template_vars_attributes.php (I assume this is where it would go?) but it's beyond me!

Can anyone help me out please? I'm using 1.2.6, radio buttons, case 3.