nsContentList::AttributeChanged(nsIDocument* aDocument, nsIContent* aContent, PRInt32 aNameSpaceID, nsIAtom* aAttribute, PRInt32 aModType, nsChangeHint aHint) { return NS_OK; }
NS_IMETHOD AttributeChanged(nsIDocument *aDocument, nsIContent*  aContent, PRInt32      aNameSpaceID, nsIAtom*     aAttribute, PRInt32      aHint) { return NS_OK; }
nsContentList::AttributeChanged(nsIDocument* aDocument, nsIContent* aContent,                                PRInt32 aNameSpaceID, nsIAtom* aAttribute,                                PRInt32 aModType, nsChangeHint aHint){  return NS_OK;}