Make the lightbox work with all pdf thumbnails

app/views/attachments/_links.html.erb

@@ -54,7 +54,7 @@
         <%=
           link_to image_tag(url_for(:controller => 'attachments', :action => 'thumbnail', :id => attachment)),
           {:controller => 'attachments', :action => 'download', :id => attachment, :filename => attachment.filename},
-          :class => 'lightbox', :rel => 'thumbnails', :title => "#{attachment.filename}#{ ('-' + attachment.description) unless attachment.description.blank? }"
+          :class => ('lightbox' + (attachment.is_pdf? ? ' pdf' : '')) , :rel => 'thumbnails', :title => "#{attachment.filename}#{ ('-' + attachment.description) unless attachment.description.blank? }"
         %>
       </div>
     <% end %>

assets/javascripts/lightbox.js

@@ -40,7 +40,12 @@ $(document).ready(function() {
 			closeSpeed		: 150
 		});
 
-    $("div.attachments a.pdf").fancybox({
+    $("div.attachments a.pdf," +
+      "div.journal ul.details a[href$='.pdf']," +
+      "div.journal ul.details a[href$='.PDF']," +
+      "div.journal div.thumbnails a[href$='.pdf']," +
+      "div.journal div.thumbnails a[href$='.PDF']").fancybox({
+      type          : 'iframe',
 			prevEffect		: 'none',
 			nextEffect		: 'none',
 			openSpeed		: 300,

init.rb

@@ -9,7 +9,7 @@
   description 'This plugin lets you preview image, pdf and swf attachments in a lightbox.'
   version '0.3.2'
   url 'https://github.com/paginagmbh/redmine_lightbox2'
-  requires_redmine :version_or_higher => '3.3.0'
+  requires_redmine :version_or_higher => '3.2.0'
 end