Can you suggest a plugin for automatic code injection?

Hallo!
I need to add a dozen of different javascript codes, based on the catogories/tags of the posts.

For example:

– posts tagged with “red” should be get the “red” version of the code (in the body)
– posts tagged with “green” should be get the “green” version of the code (in the body)

Do you know any plugin which allows that?

Thank you