EaselJS empty

http://www.createjs.com/#!/EaselJS

by Fabio Biondi

HTML

<script src="http://code.createjs.com/easeljs-0.5.0.min.js"></script>
<canvas id='display' width='640' height='480'></canvas>

CSS

#display {
    border: 1px solid #000000;
    margin: 50px auto;
    display: block;
}

JavaScript

var stageWidth = 640;
var stageHeight = 480;

var stage = new createjs.Stage(document.getElementById('display'));

// Add border
var border = new createjs.Shape();
border.graphics.beginStroke("#000");
border.graphics.setStrokeStyle(1);
border.snapToPixel = true;
border.graphics.drawRect(0, 0, 450, 309);
border.x = Math.round(stageWidth / 2 - 200);
border.y = Math.round(stageHeight / 2 - 150);

stage.addChild(border);
stage.update(); 
createjs.Ticker.setFPS(40);
createjs.Ticker.addListener(tick);

function tick() {
    stage.update();
}