Hi Lori,
It looks like they added categories for all the drop down items and assigned events to them and then setup some custom functionality to redirect to the appropriate category when selected. Unfortunately this is beyond what we can assist with in the forums and you will need to figure out how to code it on your own, hire someone (I can provide a list of agencies to recommend if you want) or contact the site owner and see if they will share. We’re actually going to be implementing similar functionality in our upcoming 3.0 release. We just posted a video overview of some of the new features coming so check it out: https://www.facebook.com/ModernTribeInc / http://www.youtube.com/watch?feature=player_embedded&v=UhQj-CrQGCE
If there’s anything else I can help with, please let me know.