셀렉트가 저장이 안돼요.

<script language = "javascript">
function showSub(obj) {
    f = document.all;
    if(obj == 1) {
        f.Sub1.style.display = "";
        f.Sub2.style.display = "none";
        f.Sub3.style.display = "none";
    } else if(obj == 2) {
        f.Sub1.style.display = "none";
        f.Sub2.style.display = "";
        f.Sub3.style.display = "none";
    } else if(obj == 3) {
        f.Sub1.style.display = "none";
        f.Sub2.style.display = "none";
        f.Sub3.style.display = "";   
   }
 }
</script>


    <form name="fwrite" id="fwrite" action="<?php echo $action_url ?>" onsubmit="return fwrite_submit(this);" method="post" enctype="multipart/form-data" autocomplete="off" style="width:<?php echo $width; ?>">
    <input type="hidden" name="uid" value="<?php echo get_uniqid(); ?>">
    <input type="hidden" name="w" value="<?php echo $w ?>">
       .
       .
       .
<table align="left" class="type13">
  <thead>
    <tr>
      <th scope="cols">상부</th>
    </tr>
  </thead>
  <tbody>
    <tr>
      <td><select name="wr_8" onChange="showSub(this.options[this.selectedIndex].value);" id="Sub0" required class="frm_input"  style="width:316px">
              <option value="">선택하세요.<option>
     <option value="1" <?php echo ($write['wr_8'] == "AAA") ? "selected" : "";?>>AAA</option>
     <option value="2" <?php echo ($write['wr_8'] == "BBB") ? "selected" : "";?>>BBB</option>
     <option value="3" <?php echo ($write['wr_8'] == "CCC") ? "selected" : "";?>>CCC</option>
          </select></td>
    </tr>
  </tbody>
</table>
<table align="left" class="type14">
  <thead>
    <tr>
      <th scope="cols">하부</th>
      </tr>
  </thead>
  <tbody>
    <tr>
      <td>
  <select name="wr_10" id="Sub1" class="frm_input" style="width:316px; display:none;">
    <option value="">선택하세요.</option>
    <option value="AAA-1"<?php echo ($write['wr_10'] == "AAA-1") ? " selected" : "";?>>AAA-1</option>
    <option value="AAA-2"<?php echo ($write['wr_10'] == "AAA-2") ? " selected" : "";?>>AAA-2</option>
    <option value="AAA-3"<?php echo ($write['wr_10'] == "AAA-3") ? " selected" : "";?>>AAA-3</option>
  </select>
       
  <select name="wr_10" id="Sub2" class="frm_input" style="width:316px; display:none;">
    <option value="">선택하세요.</option>
    <option value="BBB-1"<?php echo ($write['wr_10'] == "BBB-1") ? " selected" : "";?>>BBB-1</option>
    <option value="BBB-2"<?php echo ($write['wr_10'] == "BBB-2") ? " selected" : "";?>>BBB-2</option>
    <option value="BBB-3"<?php echo ($write['wr_10'] == "BBB-3") ? " selected" : "";?>>BBB-3</option>
  </select>
       
  <select name="wr_10" id="Sub3" class="frm_input" style="width:316px; display:none;">
    <option value="">선택하세요.</option>
    <option value="CCC-1" <?php echo ($write['wr_10'] == "CCC-1") ? "selected" : "";?>>CCC-1</option>
    <option value="CCC-2" <?php echo ($write['wr_10'] == "CCC-2") ? "selected" : "";?>>CCC-3</option>
    <option value="CCC-3" <?php echo ($write['wr_10'] == "CCC-3") ? "selected" : "";?>>CCC-3</option>
  </select>
      </td>
       </tr>
  </tbody>
</table>
<div class="btn_confirm">
        <input type="submit" value="작성완료" id="btn_submit" accesskey="s" class="btn_submit">
</div>

    </form>