가운데 정렬이 왜 안먹을까요 ?ㅜ

<div align="center">
    <table cellpadding="0" cellspacing="0" width="100%" height="194">
        <tr>
            <td width="100" height="46" align="center" valign="top">
                <table width="970" border="0" cellpadding="0" cellspacing="0" align="center">
                    <tr>
                        <td width="138">
                            <p align="left"><img id="top_head_01" src="images/top_head_01.jpg" width="138" height="26" alt="" /></p>
                        </td>
                        <td width="592">
                            <p align="left"><img id="top_head_02" src="images/top_head_02.jpg" width="98" height="26" alt="" /></p>
                        </td>
                        <td width="86">
                            <p align="left"><img id="top_head_04" src="images/top_head_04.jpg" width="86" height="26" alt="" /></p>
                        </td>
                        <td width="77">
                            <p align="left"><img id="top_head_05" src="images/top_head_05.jpg" width="76" height="26" alt="" /></p>
                        </td>
                        <td width="74">
                            <p align="left"><img id="top_head_06" src="images/top_head_06.jpg" width="73" height="26" alt="" /></p>
                        </td>
                    </tr>
                </table>
            </td>
        </tr>
        <tr>
            <td width="100" height="81" align="center" valign="top">
                <center>가운데 정렬이 안되용</center>
            </td>
        </tr>
        <tr>
            <td width="100" height="67" align="center" valign="middle">
                <p align="center">가운데정렬이 안되용</p>
            </td>
        </tr>
    </table>
</div>

에디터 화면에서는 가운데정렬이 되는데,
업로드 후 보거나, 에디터에서 미리보기로 보면 좌측정렬되어있네요 ;;
이부분만 가운데 정렬되면 되는뎅 ㅠㅠ