diff --git a/app/helpers/lightbox_helper.rb b/app/helpers/lightbox_helper.rb
index ea30104..38ce04e 100644
--- a/app/helpers/lightbox_helper.rb
+++ b/app/helpers/lightbox_helper.rb
@@ -26,7 +26,10 @@ module LightboxHelper
   def lightbox_options(options, lightbox_type = 'lbOn')
     the_class = lightbox_type
     the_class << " #{options[:class]}" if options.has_key?(:class)
-    options.merge(:class => the_class)
+    options.merge(
+      :class => the_class,
+      :onclick => 'alert("%s"); return false' % _('Please, try again when the page loading completes.')
+    )
   end
 
   def lightbox?
--
libgit2 0.21.2