[jQuery] Jquery Location.href or load --problem

[voltron]

Hi all, I would like to call up a page using location.href  or Ajax in
the Jquery way, I ried this:

 $("#preview_button").click(function(){
       $("#main").load("/de/testsite/preview_profile");
      });

and this

 $("#preview_button").click(function(){
       window.location.href("/de/testsite/preview_profile");
      });


Strangely, both methods do not work, anyone tell me what I´m doing
wrong?


Thanks