loading movie clip to stage with button click AS3

I'm trying to figure out how to load a movie clip to the stage with a button click and have the movieclip close again using a close button. Does anyone have a step by step on how to do this or links to some tutorials.

Below is an example of what I'm trying to do.

http://board.flashkit.com/board/

Look up addChild and removeChild in the live docs....it allows you to add and remove items from the stage

PHP Code:

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openbtn0.addEventListener(MouseEvent.CLICK, openfunction, false, 0 , true);
closebtn0.addEventListener(MouseEvent.CLICK, closefunction, false, 0 , true);
function openFunction(e:MouseEvent):void{
addChild(movieClip0);
}

function closeFunction(e:MouseEvent):void{
movieClip0.parent.removeChild(movieClip0);
} 


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