nsComputedDOMStyle::GetTop(nsIFrame *aFrame, nsIDOMCSSPrimitiveValue*& aValue)
nsComputedDOMStyle::GetTop(nsIFrame *aFrame, nsIDOMCSSValue** aValue)
nsComputedDOMStyle::GetTop(nsIFrame *aFrame,                           nsIDOMCSSPrimitiveValue*& aValue){  return GetOffsetWidthFor(NS_SIDE_TOP, aFrame, aValue);}