nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName, const nsAString& aValue, PRBool aNotify)
virtual nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName, nsIAtom* aPrefix, const nsAString& aValue, PRBool aNotify)
  nsresult SetAttr(PRInt32 aNameSpaceID, nsIAtom* aName,                   const nsAString& aValue, PRBool aNotify)  {    return SetAttr(aNameSpaceID, aName, nsnull, aValue, aNotify);  }