diff --git a/app/assets/javascripts/application.js.erb b/app/assets/javascripts/application.js.erb
index 56bf2fb5f..be79110f3 100644
--- a/app/assets/javascripts/application.js.erb
+++ b/app/assets/javascripts/application.js.erb
@@ -234,6 +234,9 @@ var HelperModule = (function(){
     } else if (type === 'danger') {
       alertType = ' alert-danger ';
       glyphSign = ' glyphicon-exclamation-sign ';
+    } else if (type === 'info') {
+      alertType = ' alert-info ';
+      glyphSign = ' glyphicon-exclamation-sign ';
     }
     var htmlSnippet = '<div class="alert alert' + alertType +
                       'alert-dismissable alert-floating">' +
diff --git a/app/assets/javascripts/samples/sample_datatable.js.erb b/app/assets/javascripts/samples/sample_datatable.js.erb
index 0dd4b21e7..d492cf4ba 100644
--- a/app/assets/javascripts/samples/sample_datatable.js.erb
+++ b/app/assets/javascripts/samples/sample_datatable.js.erb
@@ -504,7 +504,7 @@ function onClickEdit() {
         error: function (e, data, status, xhr) {
             if (e.status == 403) {
                 HelperModule.flashAlertMsg(
-                  I18n.t('samples.js.permission_error'), 'danger'
+                  I18n.t('samples.js.permission_error'), e.responseJSON.style
                 );
                 changeToViewMode();
                 updateButtons();
@@ -1245,7 +1245,7 @@ function changeToEditMode() {
 
             renderFormError(undefined,
                             $(li).find('.text-edit'),
-                            Object.keys(msg)[0] + ' ' + msg.name.toString());
+                            msg.name.toString());
             var verticalHeight = $(li).offset().top;
             dropdownList.scrollTo(verticalHeight,0);
             setTimeout(function() {
@@ -1332,7 +1332,7 @@ function changeToEditMode() {
 
           renderFormError(undefined,
                           $(li).find('.text-edit'),
-                          Object.keys(msg)[0] + ' ' + msg.name.toString());
+                          msg.name.toString());
           var verticalHeight = $(li).offset().top;
           dropdownList.scrollTo(verticalHeight,0);
           setTimeout(function() {
diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index f0314e07a..b3fcb0de1 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -44,16 +44,16 @@ class ApplicationController < ActionController::Base
     end
   end
 
-  def render_403
+  def render_403(style = 'danger')
     respond_to do |format|
-      format.html {
+      format.html do
         render file: 'public/403.html', status: :forbidden, layout: false
-      }
-      format.json {
-        render json: {}, status: :forbidden
-      }
+      end
+      format.json do
+        render json: { style: style }, status: :forbidden
+      end
     end
-    return true
+    true
   end
 
   def render_404