CardLayout in java

	Used to produce installer or wizard style interface as steps in process, or to select palette. Use JTabbedPanel if user should have control.
crdMgr =	new CardLayout();	Sets layout to CardLayout.
crdMgr =	new CardLayout(h, v));	Also can specify horizontal and vertical padding.
	p.add(cardPanel);	Adds next card to panel.
	p.add(cardPanel, name);	Adds next card to panel. Use String name to select it later.
	crdMgr.first(p);	Panel p displays the first card in the layout of p.
	crdMgr.next(p);	Panel p displays the next card in the layout of p.
	crdMgr.previous(p);	Panel p displays the previous card in the layout of p.
	crdMgr.last(p);	Panel p displays the last card in the layout of p.
	crdMgr.show(p, name);	Panel p displays card with String name name in panel p.