Disable mathjax contextual menu
diff --git a/_includes/site_head.html b/_includes/site_head.html
index 37981c7..3ec073c 100644
--- a/_includes/site_head.html
+++ b/_includes/site_head.html
@@ -22,7 +22,7 @@
 <link rel="stylesheet" href="/css/docs.css">
 
 <script type="text/x-mathjax-config">
-  MathJax.Hub.Config({tex2jax: {inlineMath: [['$','$'], ['\\(','\\)']]}});
+  MathJax.Hub.Config({tex2jax: {inlineMath: [['$','$'], ['\\(','\\)']]},showMathMenu:false,showMathMenuMSIE:false,showProcessingMessages:false});
 </script>
 
 <!-- original source: https://cdnjs.cloudflare.com/ajax/libs/mathjax/2.7.1/MathJax.js?config=TeX-AMX_HTML-full -->