Apache HTML Header Injection

Hi,

Does anyone know of a way that I can inject some html code into the header
of every html document requested from my Linux Apache Web Server.

I am developing a very simple PHP/Mysql company intranet and would like an
easy way to insert the company logo and a simple menu syste, at the top of
every page without having to place it into the document directly.

I know I could use php to include a header document or even SSI's but I
would really rather do this through Apache somehow.

This is something I have seen in the past performed by "free" web space
providers.

Kind Regards

Paul Woodward wrote:
 > I know I could use php to include a header document or even SSI's but I
 > would really rather do this through Apache somehow.

I know of a "free" web space provider who
put banner ads on every page by modifying
the SSI parser and recompiling.<!-- ~MESSAGE_AFTER~ -->