Thats not 100% true -- it is possible to suppress all conventional focus
indicators-- I believe yahoo does this on their new web mail application.
But should you?
When you get to the point you are overriding all basic interactivity you
might have a "web-delivered" desktop application, but its no longer a
web app in any sense of the word. Which is really the heart of the
discussion-- If there is a conflict in behavior between web convention
and "chandler convention" which do you stick with? If you expect the
bulk of your users to come from chandler, and should those users find
comfort in chandlers quirks which is the bigger sin? inconsistency with
chandler, or inconsistency with web convention.
This happens all the time with desktop apps-- apple, microsoft,
macromedia, and adobe each maintained a separate and unique set of key
shortcuts. If you are writing an adobe app do you follow mac convention?
windows convention? your internal convention?
What key shortcut quits an app? ctrl-Q? ctrl-X? esc?
How does redo work? ctrl+ y? ctrl+shift+z?
_ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _
Open Source Applications Foundation "Design" mailing list
http://lists.osafoundation.org/mailman/listinfo/design