<!DOCTYPE html>
<html>
<head>
<script type='text/javascript' src='http://code.jquery.com/jquery-1.9.1.js'></script>
<style type='text/css'>
canvas{border:1px solid red;}
</style>
<script type='text/javascript'>//<![CDATA[
$(window).load(function(){
$("#theCanvas").click(function () {
alert("You clicked the canvas with an invisible mouse!");
$("#theCanvas").css("cursor", "none");
});
});//]]>
</script>
</head>
<body>
<p">Click the red canvas and I'll hide the cursor when you are over me</p>
<canvas id="theCanvas"></canvas>
</body>
</html>
The code above is rendered as follows: