<form name="login" id="login" method="post" action="j_security_check" >
    <table>
        <tr>
            <td>
                <label for="j_username">Username</label>
            </td>
            <td>
                <input id="j_username" type="text" name="j_username"/>
            </td>
        </tr>
        <tr>
            <td>
                <label for="j_password">Password</label>
            </td>
            <td>
                <input id="j_password" type="password" name="j_password"/>
            </td>
        </tr>
        <tr>
            <td></td>
            <td>
                <button id="button_submit" type="submit" onclick="javascript:document.login.submit();" class="logBut">Submit</button>
            </td>
        </tr>
    </table>
</form>