assertNull("bgcolor on td", el.getAttributeValue("bgcolor"));
assertNull("border on td", el.getAttributeValue("border"));
assertNull("cellspacing on td", el.getAttributeValue("cellspacing"));
assertNull("cellpadding on td", el.getAttributeValue("cellpadding"));
el = buffer.closeElement("tr");
assertNull("Class attribute on tr", el.getAttributeValue("class"));
assertNull("bgcolor on tr", el.getAttributeValue("bgcolor"));
assertNull("border on tr", el.getAttributeValue("border"));
assertNull("cellspacing on tr", el.getAttributeValue("cellspacing"));
assertNull("cellpadding on tr", el.getAttributeValue("cellpadding"));