Tryit Editor v2.9

Edit This Code:
<!DOCTYPE html>
<html>
<head>
<script>
function WhichButton(event) {
    alert("You pressed button: " + event.button)
}
</script>
</head>
<body>

<div onmousedown="WhichButton(event);">Click this text (with one of your mouse-buttons)
<p>
0	Specifies the left mouse-button<br>
1	Specifies the middle mouse-button<br>
2	Specifies the right mouse-button</p>
<p><strong>Note:</strong> Internet Explorer 8, and earlier, returns another result:<br>
1	Specifies the left mouse-button<br>
4	Specifies the middle mouse-button<br>
2	Specifies the right mouse-button</p>

</div>
</body>
</html>