Class that adds a naming container to Panel and wraps an extra div around the rendered HTML. This extra div serves the same purpose as the manually inserted div of CollapsiblePanel. Since setting the height of an element with padding or margins to zero can still leave something visible, it is this wrapper div with no additional space that we actually attach to.

public class AccordionContentPanel : Panel, 
	IDataItemContainer, INamingContainer

Public Class AccordionContentPanel _
	Inherits Panel _
	Implements IDataItemContainer, INamingContainer

public ref class AccordionContentPanel : public Panel, 
	IDataItemContainer, INamingContainer