Buttons remember state of movieclip.

Here is an example:

JavaScript code:

var root = this;
var currentButton;

function main()
{
	document.body.style.backgroundColor = lib.properties.color;
	createjs.Touch.enable(stage);
	stage.enableMouseOver();
	
	setup();

	root.balance.gotoAndStop("middle");

	root.btn1.stop();
	root.btn1.mouseChildren = false;
	root.btn1.cursor = "pointer";
	root.btn1.on("click", animateBalance, null, false, { label: "left" });

	root.btn2.stop();
	root.btn2.mouseChildren = false;
	root.btn2.cursor = "pointer";
	root.btn2.on("click", animateBalance, null, false, { label: "middle" });

	root.btn3.stop();
	root.btn3.mouseChildren = false;
	root.btn3.cursor = "pointer";
	root.btn3.on("click", animateBalance, null, false, { label: "right" });

	currentButton = root.btn2;
	root.btn2.gotoAndStop("down");
}

function setup()
{
	// makes any MovieClip instance capable of playing from the current frame to another one in any direction
	createjs.MovieClip.prototype.playUntil = function(positionOrLabel, ease)
	{
		var duration;
		var to = this.timeline.resolve(positionOrLabel);
		
		this.tweenFrame = this.timeline.position;
		
		if (this.tweenFrame == null)
			return;

		duration = Math.abs(((to - this.tweenFrame) / lib.properties.fps) * 1000);
		
		createjs.Tween.get(this, { override: true }).to({ tweenFrame: to }, duration, ease).addEventListener("change", function(e)
		{
			var target = e.currentTarget.target;
			
			target.gotoAndStop(Math.round(target.tweenFrame));
			
			if (target.tweenFrame === to)
				e.currentTarget.removeAllEventListeners("change");			
		});
	};
}

function animateBalance(e, data)
{
	if (currentButton)
		currentButton.gotoAndStop("up");

	currentButton = e.currentTarget;
	currentButton.gotoAndStop("down");
	root.balance.playUntil(data.label, createjs.Ease.cubicInOut);
}

main();

FLA / source / download:
https://bit.ly/463cRXi

Don't worry about the prototype part. That only makes Movie Clips capable of playing timelines from a frame to another without "jumping" and you also need less animations.

Please let us know if something is not clear.

Regards,

JC