calcNewCenterPaneDims = function () {
		var d = {
			top:	getPaneSize("north", true) // true = include 'spacing' value for pane
		,	bottom:	getPaneSize("south", true)
		,	left:	getPaneSize("west", true)
		,	right:	getPaneSize("east", true)
		,	width:	0
		,	height:	0
		};

		// NOTE: sC = state.container
		// calc center-pane outer dimensions
		d.width		= sC.innerWidth - d.left - d.right;  // outerWidth
		d.height	= sC.innerHeight - d.bottom - d.top; // outerHeight
		// add the 'container border/padding' to get final positions relative to the container
		d.top		+= sC.inset.top;
		d.bottom	+= sC.inset.bottom;
		d.left		+= sC.inset.left;
		d.right		+= sC.inset.right;

		return d;
	}
Returns data for setting the size/position of center pane. Also used to set Height for east/west panes

@return JSON  Returns a hash of all dimensions: top, bottom, left, right, (outer) width and (outer) height