title: Include same header and footer in multiple html files
body: <p>I am editing about 60 html files by hand and want to include an identical header and footer in each file.  For maintenance purposes, I want to be able to update the header and footer on all pages simultaneously as needed.  I think the old-fashioned way to do that was using frames, and the new one is PHP.</p>
  
  <p>The problem is that I need to maintain the current URL structure of the site, and all current pages have a .html extension, which seems to bar using PHP without changing server settings.  </p>
  
  <p>I found this answer (<a href="https://stackoverflow.com/questions/18712338/common-header-and-footer-include-multiple-html-pages">Make header and footer files to be included in multiple html pages</a>) which suggested using jquery, but the code is not working for me.</p>
  
  <p>Am I stuck editing every file by hand with every header/footer update?</p>