SetSelected(aDefaultSelected);
nsHTMLOptionElement::SetDefaultSelected(PRBool aDefaultSelected){  nsHTMLValue empty(eHTMLUnit_Empty);  if (aDefaultSelected) {    return mInner.SetHTMLAttribute(nsHTMLAtoms::selected, empty, PR_TRUE);  } else {    mInner.UnsetAttribute(kNameSpaceID_HTML, nsHTMLAtoms::selected, PR_TRUE);    return NS_OK;  }}