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function drawShape() {
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// get the canvas element using the DOM
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var canvas = document.getElementById('tutorial');
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// Make sure we don't execute when canvas isn't supported
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if (canvas.getContext){
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// use getContext to use the canvas for drawing
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var ctx = canvas.getContext('2d');
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// Draw shapes
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ctx.beginPath();
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ctx.moveTo(75,40);
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ctx.bezierCurveTo(75,37,70,25,50,25);
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ctx.bezierCurveTo(20,25,20,62.5,20,62.5);
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ctx.bezierCurveTo(20,80,40,102,75,120);
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ctx.bezierCurveTo(110,102,130,80,130,62.5);
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ctx.bezierCurveTo(130,62.5,130,25,100,25);
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ctx.bezierCurveTo(85,25,75,37,75,40);
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ctx.fill();
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ctx.globalAlpha = 0.5;
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}
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}
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drawShape();
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