From 65b41c3f6e6dbd377a0cdc1de86e49309b134c68 Mon Sep 17 00:00:00 2001
From: Ian Gilman <ian@iangilman.com>
Date: Thu, 13 Jul 2017 17:16:13 -0700
Subject: [PATCH] Looser check for DZI schema

---
 src/dzitilesource.js | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/dzitilesource.js b/src/dzitilesource.js
index 443bfaca..ec5ea9a9 100644
--- a/src/dzitilesource.js
+++ b/src/dzitilesource.js
@@ -113,8 +113,10 @@ $.extend( $.DziTileSource.prototype, $.TileSource.prototype, /** @lends OpenSead
             }
         }
 
-        return ( "http://schemas.microsoft.com/deepzoom/2008" == ns ||
-            "http://schemas.microsoft.com/deepzoom/2009" == ns );
+        ns = (ns || '').toLowerCase();
+
+        return (ns.indexOf('schemas.microsoft.com/deepzoom/2008') !== -1 ||
+            ns.indexOf('schemas.microsoft.com/deepzoom/2009') !== -1);
     },
 
     /**