added an empty div at the bottom of the page containing nodes

app/assets/stylesheets/application.css

@@ -73,10 +73,22 @@ a {
   text-decoration:none;
 }
 
+/*
+ * Utility
+ */
+
 .clearfloat {
   clear:both;
 }
 
+.hidden {
+  display: none;
+}
+
+/*
+ * Layout stuffs
+ */
+
 .new_session, 
 .new_user,
 .new_map,

app/views/layouts/_nodeinfo.html.erb

@@ -0,0 +1,5 @@
+<script type="text/javascript">
+  //create a global array we can fill with id's of loaded nodes
+  var loaded_nodes = new Array();
+</script>
+<div id="loaded_nodes" class="hidden"></div>

app/views/layouts/application.html.erb

@@ -60,5 +60,6 @@
     
   <% end %>
   <%= render :partial => 'layouts/ga' if Rails.env.production? %>
+  <%= render :partial => 'layouts/nodeinfo' %>
 </body>
-</html>
+</html>