You can see the errors I’m talking about here: http://screencast.com/t/mlvoRGvNQ
Those are definitely being caused by third party plugins (cff-scripts, lightbox etc..).
The issue might be this widget:
<!-- START Worden Top Gainers and Losers Ticker Widget -->
It looks like it’s including a very old version of jQuery, which is breaking GP functions, as well as a bunch of plugin functions.