<!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.save();
context.translate(101, 91.5);
context.scale(1, 0.7884615384615384);
context.beginPath();
context.arc(0, 0, 66, 0, 6.283185307179586, false);
context.stroke();
context.closePath();
context.restore();

context.strokeStyle = '#000000';
context.save();
context.translate(180, 120);
context.scale(1, 0.7666666666666667);
context.beginPath();
context.arc(0, 0, 76, 0, 6.283185307179586, false);
context.stroke();
context.closePath();
context.restore();

context.strokeStyle = '#000000';
context.save();
context.translate(239.5, 145);
context.scale(1, 0.5504587155963303);
context.beginPath();
context.arc(0, 0, 124, 0, 6.283185307179586, false);
context.stroke();
context.closePath();
context.restore();
</script>
</body>
</html>