return nsGenericHTMLContainerFormElement::SetAttr(kNameSpaceID_HTML,
return nsGenericHTMLContainerFormElement::SetAttr(kNameSpaceID_None,
nsHTMLLabelElement::SetHtmlFor(const nsAString& aValue){  // trim leading and trailing whitespace   static char whitespace[] = " \r\n\t";  nsAutoString value(aValue);  value.Trim(whitespace, PR_TRUE, PR_TRUE);  return nsGenericHTMLContainerFormElement::SetAttr(kNameSpaceID_HTML,                                                    nsHTMLAtoms::_for,                                                    value, PR_TRUE);}