html, body, #container {

    width: 100%;

    height: 100%;

    margin: 0;

    padding: 0;

}

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

​

var greenRect = stage.rect(10, 10, 100, 100);

greenRect.fill('#A5D6A7');

​

// Gets height.

var height = greenRect.getHeight();

​

var redRect = stage.rect(10, 10, 50, height);

redRect.fill('#EF9A9A');