Navigation Programming

Closed - This job posting has been filled and work has been completed.

Job Description

I need global content on an old html site (such as a navigation bar)
I've thought about programming in PHP but everyone puts the.html when they link to me and I get thousands of visitors from links and I don't just want to 301 every page from the html to the new php.

I've been trying on another page to add AddType application x-httpd-php .html to the .htaccess but this isn't working which may just mean I'm doing it wrong.

Please give me proposals on how you would create global content that would be included on all my pages. I can put it on all the pages if necessary.