Hi gthomson_ca
While I'm pretty certain the answer will lie in the
JavaScripting, I'm hard pressed to tell you exactly where. I
believe the issue here is that any custom buttons were expected to
carry out simple actions. The existing buttons
(TOC/Index/Glossary/Search) were all configured to change the
navigation pane. Hence the reason they remain in the "selected"
state.
Wish I had more to offer here... Rick