🚀 go-pugleaf

I'm using Netobjects Fusion (NOF) for developing my site and I'm using
frames. For every page NOF generates 3 files a name.html (the
mainpage) and two pages which defines the frames used called
body_name.html and header_name.html. (name could be any name).

The pages which start with body_ or header_ shouldn't be loaded
individually. So I'm looking for a javascript which redirect the user
if necessary.

If a user loads a page and the name of that page starts with "body_"
or "header_" the user has to be redirect to the name used without
"body_" or "header_" in this case index.html. 

One script for all pages independent if the right page is named
index.html or info.htm

Procedure:
1. Check if the page starts with "header_" if so go to step 4
2. Check if the page starts with "body_" if so go to step 4
3. Quit
4. Load the right page by deleting "header_" or "body_" in the URL
used and
loading the new corrected url.

Any Javascript expert who can solve this case ?

Regards,
Erik