if (mNodeInfo->Equals(nsHTMLAtoms::xmp)) {
if (mNodeInfo->Equals(nsHTMLAtoms::xmp) || mNodeInfo->Equals(nsHTMLAtoms::plaintext)) {
nsHTMLSpanElement::SetInnerHTML(const nsAString& aInnerHTML){  if (mNodeInfo->Equals(nsHTMLAtoms::xmp)) {    return ReplaceContentsWithText(aInnerHTML, PR_TRUE);  }  return nsGenericHTMLElement::SetInnerHTML(aInnerHTML);}