There are couple of factors that can affect any attempt to measure popularity of browser.
A. Where and how it is measured (I guess that
Apple and
www.microsoft.com show diffrent results :-)
B. For troublefree browsing I used to set my Opera to report back as IE 5.5 that prevented some bad webservers to return garbage if the browser didn't lie about it's indentity.
On CSS menues check out
GRC|Script-Free Pure-CSS Menu Demo
Yours
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