check if mathjax exists before proceeding

0af26ae8 · Rocky Duan · 0fd2ed99 · 0af26ae8
Commit 0af26ae8 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