check-mark on SVG context menu

	I am creating a custom SVG context menu and I would like to use a
check-mark (such as is seen on the 'HigherQuality' action) and a gray-out
(such as is seen on the 'Find Again' action) with my onactivate menu items.
Would you please tell me how  (or point me in the right direction) to effect
the check and the gray-out on a custom SVG context menu.  
	
Cynthia M. Peterson