Single Navbar for all pages

[Teedee]

Thanks to Everybody
The problem is we do a major trip each year (we head to warmer places in winter) lasting two to three months & take lots of pics for lots of places . As well we do minor trips of one or two weeks at various times during the year. A XAR (sometimes two or more when the XAR size bloats) is used for each trip. XAR files are typically 150MB. The site has many pages, each full of photos. So the XAR files get very big very quickly & I find that much over 150MB starts to cause problems. If I did one navbar on each XAR I would have to update ten or more navbars each time I add another trip.

At the moment I have a main menu on the Home page and each XAR has a Navbar with a Home button & buttons for the places in each XAR or groups of XARs.

Gary: I have already prepared a single navbar covering all pages with the other header graphics on a custom size (960x90) page.

The solution proposed by Egg could be a possibility & I will look long & hard at it. Is was going to be next on my agenda for displaying photos of wildflowers from the trips.
Egg's comment about filesize is correct; by having the navbar on each page means duplication of the navbar code on each and every page - huge duplication. A single link is required for the navbar on each page.
EDIT: Sorry I misunderstood. I thought that it was going to have a single page with a navbar whose menuitems changed the content of the iFrame. Having looked at it I realise that the XAR would be a page for every page generated by the XARs but it does mean a single navbar.

Acorn's approach was one I have tried but requires too much updating after each trip.

I will download Egg's files & study them (Done). Thanks to all for your input which is very much appreciated.
td