<!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.lineWidth = 6;

context.lineWidth = 7;

context.lineWidth = 8;

context.lineWidth = 9;

context.lineWidth = 10;

context.lineWidth = 11;

context.lineWidth = 10;

context.lineWidth = 9;

context.lineWidth = 8;

context.lineWidth = 7;

context.lineWidth = 6;

context.lineWidth = 5;

context.lineWidth = 4;

context.lineWidth = 3;

context.lineWidth = 2;

context.lineWidth = 3;

context.lineWidth = 4;

context.strokeStyle = '#000000';
context.save();
context.translate(251.5, 194.5);
context.scale(1, 0.9389312977099237);
context.beginPath();
context.arc(0, 0, 180, 0, 6.283185307179586, false);
context.stroke();
context.closePath();
context.restore();

context.strokeStyle = '#000000';
context.save();
context.translate(188.5, 256);
context.scale(1, 0.7741935483870968);
context.beginPath();
context.arc(0, 0, 39, 0, 6.283185307179586, false);
context.stroke();
context.closePath();
context.restore();

context.strokeStyle = '#000000';
context.save();
context.translate(218.5, 104.5);
context.scale(1, 0.7037037037037037);
context.beginPath();
context.arc(0, 0, 33, 0, 6.283185307179586, false);
context.stroke();
context.closePath();
context.restore();

context.strokeStyle = '#000000';
context.save();
context.translate(329, 175);
context.scale(1, 0.8888888888888888);
context.beginPath();
context.arc(0, 0, 48, 0, 6.283185307179586, false);
context.stroke();
context.closePath();
context.restore();
</script>
</body>
</html>