From 501b96c859c0402acea1b53157c74d8c380033a0 Mon Sep 17 00:00:00 2001
From: "Davide P. Cervone" <dpvc@union.edu>
Date: Fri, 26 Dec 2014 17:49:59 -0500
Subject: [PATCH] Save preview in script.MathJax to fix issue #975.

---
 unpacked/extensions/CHTML-preview.js | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/unpacked/extensions/CHTML-preview.js b/unpacked/extensions/CHTML-preview.js
index 1ab0e1f15..2c05bbfb2 100644
--- a/unpacked/extensions/CHTML-preview.js
+++ b/unpacked/extensions/CHTML-preview.js
@@ -86,10 +86,11 @@
     Preview: function (data) {
       if (this.config.disabled || !SETTINGS.CHTMLpreview ||
           SETTINGS.renderer === "CommonHTML") return;
-      var preview = data.script.previousSibling;
+      var preview = data.script.MathJax.preview || data.script.previousSibling;
       if (!preview || preview.className !== MathJax.Hub.config.preRemoveClass) {
         preview = HTML.Element("span",{className:MathJax.Hub.config.preRemoveClass});
         data.script.parentNode.insertBefore(preview,data.script);
+        data.script.MathJax.preview = preview;
       }
       preview.innerHTML = "";
       return this.postFilter(preview,data);