I'm running the Apache webserver on Fedora 13. I was interested in the Picker example and tested this example in Safari 4.0.5 browser on Windows 7. The picker example behaved as I expected when sliding the 3 different categories, the selection would center on the value.
When running the same example on my actual iphone the following occurs:
The highlight does not always center...sometimes the date will be at the bottom, top, or in between the actual values.