Navigation Bar w/Images

I have created a website with a navigation bar that will use images as navigation buttons. I just need this navigation set up so that it can be edited and updated across the site from one file. It also needs to appear and work correctly on different browsers (explorer, firefox, safari, etc.) The links are not active yet but the first set of html/php pages have been created. I will provide a link to the site to serious inquiries. Project Two I also need to be able to edit the footer from a single file across the site.