From 1bb9758dc8d75b10d7d6c65c1c9271c596bbf4d2 Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@union.edu>
Date: Sat, 24 Jan 2015 15:45:09 -0500
Subject: [PATCH] Trap errors with document.namespace (it crashes IE10 in
 standards mode).

---
 unpacked/extensions/MathML/content-mathml.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/unpacked/extensions/MathML/content-mathml.js b/unpacked/extensions/MathML/content-mathml.js
index 0e8208052..795a82825 100644
--- a/unpacked/extensions/MathML/content-mathml.js
+++ b/unpacked/extensions/MathML/content-mathml.js
@@ -56,7 +56,7 @@ MathJax.Extension["MathML/content-mathml"] = (function(HUB) {
   var isMSIE = HUB.Browser.isMSIE;
 
   if (isMSIE) {
-    document.namespaces.add("m","http://www.w3.org/1998/Math/MathML");
+    try {document.namespaces.add("m","http://www.w3.org/1998/Math/MathML")} catch (err) {}
   }
 
   var CONFIG = HUB.CombineConfig("MathML.content-mathml",{