var canvas = document.getElementById('tutorial');

  // Make sure we don't execute when canvas isn't supported

  if (canvas.getContext){

    // use getContext to use the canvas for drawing

    var ctx = canvas.getContext('2d');

    // Draw shapes

    ctx.beginPath();

    ctx.moveTo(75,25);

    ctx.quadraticCurveTo(25,25,25,62.5);

    ctx.quadraticCurveTo(25,100,50,100);

    ctx.quadraticCurveTo(50,120,30,125);

    ctx.quadraticCurveTo(60,120,65,100);

    ctx.quadraticCurveTo(125,100,125,62.5);

    ctx.quadraticCurveTo(125,25,75,25);

    ctx.stroke();

  }