function puzzle()
{
	mywidth = Math.round(400 * Math.random()) + 500;
	document.getElementById("BoxY2").style.left = Math.round(200 * Math.random());
	document.getElementById("BoxY2").style.width = mywidth;
	document.getElementById("BoxY2").style.height = Math.round(200 * Math.random()) + 400;

	myheight = Math.round(100 * Math.random()) + 200;
	document.getElementById("BoxY1").style.width = Math.round(550 * Math.random()) + 300;
	document.getElementById("BoxY1").style.height = myheight;

	//elasticEaseOut
	t1 = new Tween(document.getElementById('BoxY1').style,'height',Tween.regularEaseOut,0,myheight,3,'px');
	t1.start();
	t2 = new Tween(document.getElementById('BoxY2').style,'width',Tween.regularEaseOut,0,mywidth,3,'px');
	t2.start();
}