ength, 1)
  attr_is(el.attributes[0], "pass", "bb", XML, "a", "a:bb")
}, "XML-namespaced attributes don't need an xml prefix")

// Step 6
test(function() {
  var el = document.createElement("foo")
  assert_throws_dom("NAMESPACE_ERR",
                    function() { el.setAttributeNS("a", "xmlns:bb", "fail") })
}, "The xmlns prefix should not be allowed for arbitrary namespaces")
test(function() {
  var el = document.createElement("foo")
  assert_throws_dom("NAMESPACE_ERR",
                    function() { 