Was working on a page with form and had the need to dynamicly load a part of it (shipping address fields) if a radio button was checked.
Came out that it is not difficult at all. All is needed is to do the followring:
$("#shipping_address_btn").live("change",function(){

      $('#shipping_address').load('shipping_address.cfm',function(){

         $('#shipping_address').trigger('create');

      });

   });

shipping_address_btn is the ID of the radio button
shipping_address is the ID of the DIV where the content should be loaded