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<html>
<head>
<script type="text/javascript">
window.onload = function() {
var ctx = document.getElementById("c1").getContext("2d");
ctx.lineWidth = 5;
ctx.setLineDash([ 5, 10 ]); // 5 on, 10 off
ctx.moveTo(50, 50);
ctx.lineTo(250, 50);
ctx.stroke();
ctx.beginPath();
ctx.lineDashOffset = 5;
ctx.moveTo(50, 100);
ctx.lineTo(250, 100);
ctx.stroke();
ctx.beginPath();
ctx.lineDashOffset = 5;
ctx.setLineDash([ 5 ]); // 5 on, 5 off
ctx.moveTo(50, 150);
ctx.lineTo(250, 150);
ctx.stroke();
ctx.beginPath();
}
</script>
</head>
<body style="padding: 0px; margin: 0px;">
<div><canvas id="c1" width="300" height="300"></canvas></div>
</body>
</html>
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