diff --git a/src/assets.js b/src/assets.js
index 1ff9abd..6f61947 100755
--- a/src/assets.js
+++ b/src/assets.js
@@ -51,21 +51,31 @@ var jaws = (function(jaws) {
     self.file_type['ogv'] = "video";
     self.file_type['mkv'] = "video";
 
-    var audioTest = new Audio();
-    var videoTest = document.createElement('video');
     self.can_play = {};
-    self.can_play["wav"] = !!audioTest.canPlayType('audio/wav; codecs="1"').replace(/^no$/, '');
-    self.can_play["ogg"] = !!audioTest.canPlayType('audio/ogg; codecs="vorbis"').replace(/^no$/, '');
-    self.can_play["mp3"] = !!audioTest.canPlayType('audio/mpeg;').replace(/^no$/, '');
-    self.can_play["m4a"] = !!(audioTest.canPlayType('audio/x-m4a;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, '');
-    self.can_play["weba"] = !!audioTest.canPlayType('audio/webm; codecs="vorbis"').replace(/^no$/, '');
-    self.can_play["aac"] = !!audioTest.canPlayType('audio/aac;').replace(/^no$/, '');
-    self.can_play["mka"] = !!audioTest.canPlayType('audio/x-matroska;').replace(/^no$/, '');
-    self.can_play["flac"] = !!audioTest.canPlayType('audio/x-flac;').replace(/^no$/, '');
-    self.can_play["mp4"] = !!videoTest.canPlayType('video/mp4;').replace(/^no$/, '');
-    self.can_play["webm"] = !!videoTest.canPlayType('video/webm; codecs="vorbis"').replace(/^no$/, '');
-    self.can_play["ogv"] = !!videoTest.canPlayType('video/ogg; codecs="vorbis"').replace(/^no$/, '');
-    self.can_play["mkv"] = !!videoTest.canPlayType('video/x-matroska;').replace(/^no$/, '');
+    
+    try {
+      var audioTest = new Audio();
+      self.can_play["wav"] = !!audioTest.canPlayType('audio/wav; codecs="1"').replace(/^no$/, '');
+      self.can_play["ogg"] = !!audioTest.canPlayType('audio/ogg; codecs="vorbis"').replace(/^no$/, '');
+      self.can_play["mp3"] = !!audioTest.canPlayType('audio/mpeg;').replace(/^no$/, '');
+      self.can_play["m4a"] = !!(audioTest.canPlayType('audio/x-m4a;') || audioTest.canPlayType('audio/aac;')).replace(/^no$/, '');
+      self.can_play["weba"] = !!audioTest.canPlayType('audio/webm; codecs="vorbis"').replace(/^no$/, '');
+      self.can_play["aac"] = !!audioTest.canPlayType('audio/aac;').replace(/^no$/, '');
+      self.can_play["mka"] = !!audioTest.canPlayType('audio/x-matroska;').replace(/^no$/, '');
+      self.can_play["flac"] = !!audioTest.canPlayType('audio/x-flac;').replace(/^no$/, '');
+    }
+    catch(e) {
+    }
+
+    try {
+      var videoTest = document.createElement('video');
+      self.can_play["mp4"] = !!videoTest.canPlayType('video/mp4;').replace(/^no$/, '');
+      self.can_play["webm"] = !!videoTest.canPlayType('video/webm; codecs="vorbis"').replace(/^no$/, '');
+      self.can_play["ogv"] = !!videoTest.canPlayType('video/ogg; codecs="vorbis"').replace(/^no$/, '');
+      self.can_play["mkv"] = !!videoTest.canPlayType('video/x-matroska;').replace(/^no$/, '');
+    }
+    catch(e) {
+    }
 
     /**
      * Returns the length of the resource list