There is one thing more you can do then idaze said:
I didn't test it but that must be possible:
1. in the start window write a script for "onload" which disables adressbar, menu, and writes something useless in the status bar.
2. now before opening any other htm-file in the same browser-window or in any new, write that what I said above as a property for the new file or window before opening.
I hope that works as I imagine it and helps you!