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

     2 

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

     4   if (canvas.getContext){

     5 

     6     // use getContext to use the canvas for drawing

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

     8 

     9     // Draw shapes

    10     ctx.beginPath();

    11     ctx.arc(75,75,50,0,Math.PI*2,true); // Outer circle

    12     ctx.moveTo(110,75);

    13     ctx.arc(75,75,35,0,Math.PI,false);   // Mouth

    14     ctx.moveTo(65,65);

    15     ctx.arc(60,65,5,0,Math.PI*2,true);  // Left eye

    16     ctx.moveTo(95,65);

    17     ctx.arc(90,65,5,0,Math.PI*2,true);  // Right eye

    18     ctx.stroke();

    19 

    20   }