check if mathjax exists before proceeding

3ee0103f · Rocky Duan · 90be2e8c · 3ee0103f
Commit 3ee0103f authored Aug 04, 2012 by Rocky Duan
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lms/static/coffee/src/customwmd.coffee
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--- a/lms/static/coffee/src/customwmd.coffee
+++ b/lms/static/coffee/src/customwmd.coffee
@@ -2,6 +2,9 @@

 $ ->

+  if not MathJax?
+    return
+
  HUB = MathJax.Hub

  class MathJaxProcessor