[Chameleon] date filter

[Danna Dowdy]

I am working on a basic mapping application that currently displays data 
from a spatial database based on variable groupings.  I have individual 
views set up for each individual layer.  I would like to add a drop down 
menu somewhere on the interface so that the user could select a year and 
plot whatever layers are chosen for that particular year.  The date 
field is in the database.  Could someone point me in the right direction 
of how to do this?