<![CDATA[
<body>
<script>
var canvas = document.createElement('canvas');
canvas.id = "mycanvas";
canvas.width = 500;
canvas.height = 500;
canvas.style.position = "absolute";
canvas.style.border = "1px solid";
var body = document.getElementsByTagName("body")[0];
body.appendChild(canvas);
var c = document.getElementById("mycanvas").getContext('2d');
c.fillRect(20,20,100,100);
c.fillText("hello world", 200,200);
</script>
</body>
]]>