WebSocket: undefined as argument means argument is omitted 
diff --git a/websockets/Close-undefined.htm b/websockets/Close-undefined.htm index 4f67c06..3de1656 100644 --- a/websockets/Close-undefined.htm +++ b/websockets/Close-undefined.htm 
@@ -10,13 +10,13 @@  <div id="log"></div>  <script type="text/javascript">   - var test = async_test("W3C WebSocket API - Create WebSocket - Close the Connection - close(undefined) - INVALID_ACCESS_ERR is thrown"); + var test = async_test();    var wsocket = CreateWebSocket(false, false, false);  var isOpenCalled = false;    wsocket.addEventListener('open', test.step_func(function (evt) { - assert_throws("INVALID_ACCESS_ERR", function () { wsocket.close(undefined) }); + wsocket.close(undefined);  test.done();  }), true);  </script>