Hi to all techies out there

I am looking for a way to add lines/content to any html/html file served from a given domain.

In detail: i want to add php code to every html/htm file served which includes another file.

I do not want to manually/scriptically add those lines but rather have a server side solution for doing so.

Content can be added either before or after the original file content.

Hosting is with NatNet if that helps

Thanks

DEV.....