ID is slowly replacing NAME as a means of identifying an entity on a page. While it still works for specifying style info, it won't necessarily in the future.
Use CLASS since its only purpose in life is indicating a specific style from your sheets.
To make your .navbar links stay orange, use div.navbar a:link, div.navbar a:visited, div.navbar a:active, div.navbar a:hover {color: orange; background-color: transparent;}.
I applaud your decision to use SSI instead of frames and CSS instead of the HTML table hack.
I hope this helps.
Peter