fix all instances of old *_ERR error names to new *Error style 
diff --git a/XMLHttpRequest/open-url-multi-window-2.htm b/XMLHttpRequest/open-url-multi-window-2.htm index 6517209..eee5ef4 100644 --- a/XMLHttpRequest/open-url-multi-window-2.htm +++ b/XMLHttpRequest/open-url-multi-window-2.htm 
@@ -13,7 +13,7 @@  test(function() {  var client = new self[0].XMLHttpRequest()  document.body.removeChild(document.getElementsByTagName("iframe")[0]) - assert_throws("INVALID_STATE_ERR", function() {  + assert_throws("InvalidStateError", function() {   client.open("GET", "folder.txt")   }, "open() when associated document's IFRAME is removed")  })