The panel of the gusto.com


#1

I am interested in the implementation of the panel in the gusto.com
announced here serveral days before.The panel locates in the left side
of such a url as:
http://www.gusto.com/newyork/newyork-CityRestaurantFinder1744251.html?character_id=1041#
The lists are type,theme,features,etc
I think it is ajax style,can the developers tell me how to implement
such a panel? very grateful!