<div id="container"></div>
html, body, #container {
width: 100%;
height: 100%;
margin: 0;
padding: 0;
}
var stage = acgraph.create('container');
var simpleLayer = acgraph.layer();
simpleLayer.ellipse(85, 80, 35, 55);
simpleLayer.rect(55, 59, 185, 45);
simpleLayer.star7(55, 79, 45);
// Shows only element with index==2.
var element = simpleLayer.getChildAt(2);
element.parent(stage);