Button: image "stays" after release("press and hold"-how?)

[font=Arial]I’m trying to figure out how to create the “press and hold/stay” effect on the button - after I press it and release - “hit” image would stay until the next one is pressed.[/font]
[font=Arial][font=Arial]It may sounds confusing so I will show it: [/font][/font][font=Arial]On Macromedia site they show it but I really can not find out any info how to make all numbers stay visible until the next one is pressed:[/font]
[font=Arial][color=#800080]http://www.macromedia.com/support/flash/ts/documents/track_as_button.htm[/color][/font]

[font=Arial]The best sample what I would like to learn would be on the site: [color=#800080]http://www.elfincreative.com/[/color][/font]

[font=Arial]Where clicking on each button of menu, opens “inside animation” which stays until the next one is clicked.[/font]