Customize Ubercart checkout page CSS when certain products are in cart? On my Drupal 6 / Ubercart 2.9 cart website, I have the need to modify the CSS of the checkout page when a certain product is in the cart. For instance, if the customer is ordering red flowers, the background would change to a red flower background image. Is this possible via CSS? If not, any other ideas on how it can be done?

Thanks!
I have two ideas:

1) render the code of the article in the class attribute of the cart div. you can do that "intercepting" the render function in your template.php file.

2) using jquery