html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

var stage = acgraph.create('container');

​

var greenEllipse = stage.ellipse(150, 100, 100, 50);

greenEllipse.fill('#4CAF50 0.5');

​

// Gets center.

var center = greenEllipse.center();

​

var simpleEllipse = stage.ellipse();

simpleEllipse.center(center);

simpleEllipse.setRadius(150, 100);