[Sigia-l] Rollover Question (Web 2.0)

[Jessica Perry]

I have a client that is resisting web 2.0 rollover capability (more
info on rollover). I am having great difficulty even suggesting
rollover navigation so that subcategories are displayed on rollover of
category (across the top horizontally) from home page -- and then
shift to left rail.
Does any one have stats effectiveness of rollover navigation and/or
rollover 'more info' in images, names, maps, etc. % of people who find
rollovers engaging vs. those that are turned off by them.
Thanks!