While searching the forums I found a lot info and code about BCC in the CCK Fmail Field.
But that's not what I'm looking for: I'm looking for a way to make a optional Carbon Copy (CC) line in the Contact Form that's created by the Email Field module.

For a high school I've put up a site in which all employées are nodes created with CCK (see http://www.reviusplein.nl/school/medewerkers). Their emailadress is also part of it, but with this Email Field module I can hide their email adress and students (and parents) can mail them via the contact form.

Now, I want students and parents to have the option to cc one of two staff members while sending a mail to one of the teachers. Preferably as a new input field in the contact form.

Might something like this be possible?