<html>
<body>
<form action="demo-form.php">
First name: <input type="text" name="fname"><br>
Last name: <input type="text" name="lname"><br>
<input type="image" src="img_submit.gif" alt="Submit" width="48" height="48">
</form>
<p><b>注意:</b> 点击激活图片按钮 input type="image" 会发送 X 和 Y 坐标到服务端</p>
</body></html>