nsGenericDOMDataNode::ReplaceChildAt(nsIContent* aKid, PRUint32 aIndex, PRBool aNotify, PRBool aDeepSetDocument) { return NS_OK; }
nsresult ReplaceChildAt(nsIContent* aKid, PRInt32 aIndex, PRBool aNotify) { return NS_OK; }
nsGenericDOMDataNode::ReplaceChildAt(nsIContent* aKid, PRUint32 aIndex,                                     PRBool aNotify, PRBool aDeepSetDocument){  return NS_OK;}