Help me in buidling a button, on hover it has to slide down and again on clicking i

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[SIZE=3][COLOR=Black][/COLOR][/SIZE][COLOR=blue][FONT=&quot][COLOR=Black][SIZE=3]hi,
I’m new to this platform.
pls help in building a button Menu which contains links, on hover it has to slide down and again on clicking it has to collapse…like the File, Edit buttons in explorer in As3.0.[/SIZE][/COLOR]
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