PRInt32         aNameSpaceID,
nsSelectControlFrame::AttributeChanged(nsIPresContext* aPresContext,                                     nsIContent*     aChild,                                     nsIAtom*        aAttribute,                                     PRInt32         aHint){  if (nsnull != mWidget) {    if (nsHTMLAtoms::disabled == aAttribute) {      mWidget->Enable(!nsFormFrame::GetDisabled(this));    }  }  return NS_OK;}