Custom Header/footer For Browser Printing

[DippNCope]

How can I change the header/footer when printing from safari and or firefox?
When on a PC I can go to IE and click page setup and the options are right there but I can not find where or how to do this on a Macintosh. I am in a school setting and am trying to set up the library where the students have a shared log on so this would need to be a global setting. Any help is greatly appreciated. Thank you.

[unconfused]

When you first start up Firefox....BEFORE you load ANYTHING....if you go to "File"...then "Print"...then pull down the menu that says "Copies & Pages" to "Firefox". There is where you can remove the information from the headers and footers.