<!DOCTYPE html>

<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>Your Canvas</title>

<style type="text/css"></style>

</head>
<body>
<canvas id="imageView" width="600" height="500"></canvas>

<script type="text/javascript">
var canvas, context, canvaso, contexto;
canvaso = document.getElementById('imageView');
context = canvaso.getContext('2d');
context.lineWidth = 5;

context.strokeStyle = '#000000';
context.strokeRect(158, 38, 298, 444);

context.strokeStyle = '#000000';
context.beginPath();
context.moveTo(159, 478);
context.lineTo(306, 36);
context.stroke();
context.closePath();

context.strokeStyle = '#000000';
context.beginPath();
context.moveTo(305, 38);
context.lineTo(455, 481);
context.stroke();
context.closePath();

context.strokeStyle = '#000000';
context.beginPath();
context.moveTo(455, 481);
context.lineTo(159, 267);
context.stroke();
context.closePath();

context.strokeStyle = '#000000';
context.beginPath();
context.moveTo(159, 267);
context.lineTo(454, 39);
context.stroke();
context.closePath();
</script>
</body>
</html>