diff --git a/books b/books
index e5b73d7..ab9755a 160000
--- a/books
+++ b/books
@@ -1 +1 @@
-Subproject commit e5b73d727bd3f073d330a195e4655be969ad12f0
+Subproject commit ab9755a74714b647290c861f666515de220935d8
diff --git a/examples/index.html b/examples/index.html
index 7f2223b..374e421 100644
--- a/examples/index.html
+++ b/examples/index.html
@@ -85,6 +85,7 @@
                 <li><a href="promises.html">Promises</a></li>
                 <li><a href="fixed.html">Fixed</a></li>
                 <li><a href="custom-elements.html">Custom Element</a></li>
+                <li><a href="mathml.html">MathML</a></li>
               </ol>
 
             </div>
diff --git a/hooks/default/mathml.js b/hooks/default/mathml.js
index 679b10f..60e45d6 100644
--- a/hooks/default/mathml.js
+++ b/hooks/default/mathml.js
@@ -2,15 +2,25 @@ EPUBJS.Hooks.register("beforeChapterDisplay").mathml = function(callback, render
 
     // check of currentChapter properties contains 'mathml'
     if(renderer.currentChapter.properties.indexOf("mathml") !== -1 ){
-
+        
+        // Assign callback to be inside iframe window
+        renderer.iframe.contentWindow.mathmlCallback = callback;
+        
         // add MathJax config script tag to the renderer body
         var s = document.createElement("script");
         s.type = 'text/x-mathjax-config';
-        s.innerHTML = 'MathJax.Hub.Config({jax: ["input/TeX","input/MathML","output/SVG"],extensions: ["tex2jax.js","mml2jax.js","MathEvents.js"],TeX: {extensions: ["noErrors.js","noUndefined.js","autoload-all.js"]},MathMenu: {showRenderer: false},menuSettings: {zoom: "Click"},messageStyle: "none"});';
+        s.innerHTML = '\
+        MathJax.Hub.Register.StartupHook("End",function () { \
+          console.log("The TeX input jax is loaded and ready!"); \
+          // window.mathmlCallback() \
+        });\
+        MathJax.Hub.Config({jax: ["input/TeX","input/MathML","output/SVG"],extensions: ["tex2jax.js","mml2jax.js","MathEvents.js"],TeX: {extensions: ["noErrors.js","noUndefined.js","autoload-all.js"]},MathMenu: {showRenderer: false},menuSettings: {zoom: "Click"},messageStyle: "none"}); \
+                ';
         renderer.doc.body.appendChild(s);
-
         // add MathJax.js to renderer head
         EPUBJS.core.addScript("http://cdn.mathjax.org/mathjax/latest/MathJax.js?config=TeX-AMS-MML_HTMLorMML", null, renderer.doc.head);
+    
+    } else {
+        if(callback) callback();
     }
-    if(callback) callback();
 }