From 8b8f2d59d79021d19cf870f159aab2d8aee54fed Mon Sep 17 00:00:00 2001
From: adam-p <pritchard.adam@gmail.com>
Date: Thu, 7 Oct 2010 14:47:28 -0400
Subject: [PATCH] Fixed erroneous attempt to use excanvas.js in IE9

---
 dygraph.js | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/dygraph.js b/dygraph.js
index 4cdc196..29aebed 100644
--- a/dygraph.js
+++ b/dygraph.js
@@ -2497,7 +2497,7 @@ Dygraph.createCanvas = function() {
   var canvas = document.createElement("canvas");
 
   isIE = (/MSIE/.test(navigator.userAgent) && !window.opera);
-  if (isIE) {
+  if (isIE && (typeof(G_vmlCanvasManager) != 'undefined')) {
     canvas = G_vmlCanvasManager.initElement(canvas);
   }
 
-- 
2.7.4