Originally posted by kierant
Is there usually a root page of code that can be edited once that updates all other pages?
I looked at the code on the site you linked and from the tags in it, it was clearly created in Dreamweaver, using Dreamweaver templates.
With DW templates, you create a template page that is usually the "shell" of the site and may include navigation, common header and footer, with one or more designated content areas. When you create new pages from the template, DW makes a copy and only lets you edit the previously marked areas. If you later change the template, DW will reapply it to all the pages that use it.
It doesn't look like the template file itself ("/Templates/franklins.dwt") made it to the server. It can be recreated from any of the pages though. There is a 30-day Dreamweaver trial, if you want to give that a shot.
On the other hand, the time investment of setting up Dreamweaver, recreating the project and the template, may not be worthwhile if you don't plan to do a lot more with it. What you need right now can also be easily accomplished with any text editor capable of search and replace on multiple files.