diff --git a/app/assets/javascripts/app/index.js.coffee b/app/assets/javascripts/app/index.js.coffee
index fa940c4bd..cc331d2b0 100644
--- a/app/assets/javascripts/app/index.js.coffee
+++ b/app/assets/javascripts/app/index.js.coffee
@@ -47,6 +47,10 @@ class App extends Spine.Controller
       params.C = ( key ) ->
         App.Config.get( key )
 
+      # define session helper
+      params.S = ( key ) ->
+        App.Session.get( key )
+
       # define template
       JST["app/views/#{name}"](params)
     template
diff --git a/app/assets/javascripts/app/views/agent_ticket_zoom.jst.eco b/app/assets/javascripts/app/views/agent_ticket_zoom.jst.eco
index f5a824c33..a764da0cb 100644
--- a/app/assets/javascripts/app/views/agent_ticket_zoom.jst.eco
+++ b/app/assets/javascripts/app/views/agent_ticket_zoom.jst.eco
@@ -75,7 +75,7 @@
 
     <div class="row article">
       <div class="avatar span1 thumbnails">
-        <img class="thumbnail user-data" data-id="<%= window.Session['id'] %>"" src="<%- window.Session['image'] %>" alt="">
+        <img class="thumbnail user-data" data-id="<%= @S('id') %>"" src="<%- @S('image') %>" alt="">
       </div>
       <div class="span8 well-muted article-message">
         <form class="form-stacked keepleft">