I tried the tour on mac
- os 10.5.3 (mac intel imac),
- safari 3.1.2,
- firefox 2.0.0.16,
- flash 9.0.124 player :
The tour plays ok but it takes quite a long time to load (30 seconds at least on a 20 mb dsl line)
the loading time should be improved since some won't wait that long to see it
for the javascript in safari you have to check this menu Safari > preferences > security
Besides make sure you have the system updated with the latest patch (go to system preference (bottom icon on the desktop > software update )