// External link warning dialog
   $('a.ext_link').live('click', function(){
      var link = $(this).attr('href');
      $('<div>You are leaving our site. Do you want to proceed?</div>').dialog({
         title: "External Link",
         width: 400,
         modal : true,
         overlay: {
            backgroundColor: '#000',
            opacity: 0.5
         },
         buttons: {
            'Proceed': function() {
               $(this).dialog('close').remove();
               window.open(link);
            },
           'Cancel': function() {
              $(this).dialog('close').remove();
              return false;
            }
         }
      });
      return false;
   });