 < el.children.length; i++) {
    assert_throws_dom("INVALID_CHARACTER_ERR", function() {
      el.children[i].setAttribute("~", "test")
    })
  }
}, "When qualifiedName does not match the Name production, an " +
   "INVALID_CHARACTER_ERR exception is to be thrown, even if the attribute " +
   "is already present. (setAttribute)")

// Step 2
test(function() {
  var el = document.createElement("div")
  el.setAttribute("ALIGN", "left")
  assert_equals(el.getAttributeNS("", "ALIGN"), null)
  assert_equals(el.