anchor.diff:  
       $.post(ajaxValidationUrl, params,
         function(data){
  -
  +    	
           // remove previous error messages from feedback panel
           var messagesList = $('#feedbackPanel > ul');
           messagesList.empty();
  
positive.code:         if (count > 0) {
            // make feedback panel visible
            feedbackPanel.show();
          } else {
            // make feedback panel invisible
            feedbackPanel.hide();
  
negative.code:       }, "json");
  
    });
    
  });
  function scrollToErrorMessage(){
    scrollTo('KO');
    scrollTo('feedbackPanel');
    function scrollTo(hash) {
        location.hash = "#" + hash;
    }
  }
  </script>
  
  </c:if>