Then, perhaps, SSI would help. SSI=
Server Side IncludesI don`t know much about, but it should work like this:
Pages will have floating DIV container. Inside DIV, you wil have
<!--#include virtual="menu.html" -->
where menu.html = menu file with links to other pages. If you change the menu.html it should automatically shown into a DIV when the pages is opened.
Notes:
Server (EE) must have SSI support. Contact
Purrcat and ask for inclusion support enabling.