if (mNodeInfo->Equals(nsHTMLAtoms::spacer)) {
if (mNodeInfo->Equals(nsHTMLAtoms::embed)) { aMapRuleFunc = &EmbedMapAttributesIntoRule; } else if (mNodeInfo->Equals(nsHTMLAtoms::spacer)) {
nsHTMLSharedLeafElement::GetAttributeMappingFunction(nsMapRuleToAttributesFunc& aMapRuleFunc) const{  if (mNodeInfo->Equals(nsHTMLAtoms::spacer)) {    aMapRuleFunc = &SpacerMapAttributesIntoRule;  } else {    aMapRuleFunc = &PlainMapAttributesIntoRule;  }  return NS_OK;}