按钮图像作为表单输入提交按钮？

<form method="post" action="confirm_login_credentials.php">
    <table>
        <tr>
            <td>User ID:</td>
            <td><input type="text" id="uid"></td>
        </tr>
        <tr>
            <td>Password:</td>
            <td><input type="text" id="pass"></td>
        </tr>
        <tr>
            <td colspan="2" align="right">
                <a href="/go.html?url=#"><img src="images/login.jpg"></a>
            </td>
        </tr>
    </table>
</form>
<form method="post" action="confirm_login_crede