[jQuery] Inline Datepicker Help

I have an inline datepicker on my page...I need two things:

1.) I've implemented the onSelect method, but what I really want to
do is do a non-modal popup for the user to see what calendar events
from the database that are on the date selected. I've worked out all
the database and json parts, but now I need to make the popup near the
calendar. I'm surprised that there isn't any mouse coordinates passed
to the onSelect function. Anyone ever attempted something like this?
What I'm looking for is something similar to this:

http://www.kensingtonhilltop.org/dad

2.) Also from the link above, you see how they have a star on the
dates that have events associated with that date? How can we modify
the date so that there is some way to distinguish days that have
events associated with them versus ones that don't.

Thanks in advance!