<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
</head>
<body>
<div onclick="alert('1');">
1
<div onclick="alert('2');">
2
</div>
</div>
</body>
</html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title></title>
</head>
<body>
<div onclick="alert('1');">
1
<div onclick="alert('2');">
2
</div>
</div>
</body>
</html>
<div onclick="alert('1');">
1
<div onclick="alert('2');event.cancelBubble=true;">
2
</div>
</div>