XUL:Attribute:resizeafter

resizeafter: Type: one of the values below; This attribute indicates which element to the right or below the splitter should be resized when the splitter is repositioned.

closest: The element immediately to the right or below the splitter resizes.
farthest: The element that is the farthest away from the splitter to the right or below the splitter resizes.
grow: The elements to the right or below the splitter do not change size (unless they are flexible) when the splitter is dragged, but instead the entire container changes size.
flex: The closest flexible element resizes. New in Firefox 3

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