Differences between Safari for Windows and Safari for Mac

Question

What are the differences from a developer point of view between Safari for Mac and Safari for Windows?

I think it boils down to evaluate differences between (if I missed

Answer 1

I had an issue with the popup blocker in Safari in Windows XP. I guess the blocker didn't accept that the user clicked a link an Flash that then triggered a JavaScript that opened the Window. The did work in the other major browsers and Safari in OS X, though. Chrome also blocked my window in XP, but not in OS X or Ubuntu.