nsGenericHTMLContainerElement::ChildCount(PRInt32& aCount) const { aCount = mChildren.Count(); return NS_OK; }
NS_IMETHOD ChildCount(PRInt32& aResult) const { aResult = 0; return NS_OK; }
nsGenericHTMLContainerElement::ChildCount(PRInt32& aCount) const{  aCount = mChildren.Count();  return NS_OK;}