diff --git a/index.html b/index.html
index 16068a9..c927557 100644
--- a/index.html
+++ b/index.html
@@ -9,6 +9,7 @@
   <link rel="stylesheet" href="stylesheets/stylesheet.css" media="screen"/>
   <link rel="stylesheet" href="stylesheets/pygment_trac.css"/>
   <script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
+  <script type="text/javascript" src="http://latex.codecogs.com/latexit.js"></script>
   <script type="text/javascript" src="javascripts/script.js"></script>
 
   <title>Космическая эра: 1861</title>