为什么 我的 button 按钮点击没有反映那 ？
<div class="byd-layout-cell byd-content">
<form name="form1" method="post">
<div class="byd-post">
<div class="byd-post-tl"></div>
<div class="byd-post-tr"></div>
<div class="byd-post-bl"></div>
<div class="byd-post-br"></div>
<div class="byd-post-tc"></div>
<div class="byd-post-bc"></div>
<div class="byd-post-cl"></div>
<div class="byd-post-cr"></div>
<div class="byd-post-cc"></div>
<div class="byd-post-body">
<div class="byd-post">
<div class="byd-post-tl"></div>
<div class="byd-post-tr"></div>
<div class="byd-post-bl"></div>
<div class="byd-post-br"></div>
<div class="byd-post-tc"></div>
<div class="byd-post-bc"></div>
<div class="byd-post-cl"></div>
<div class="byd-post-cr"></div>
<div class="byd-post-cc"></div>
<div class="byd-post-body">
<div style="text-align: center;">
  <label class="table_caption"><u>お知らせ　車両の移動一覧</u></label>
  </div>
  <div align="right"><input type="Button" name="btn_cancle" value="戻る" onclick="javascript:location.href='./main';" tabindex="13"></div>
<br />
<!--車両一覧-->
  <!-- jQuery -->
  <script type="text/javascript" src="./js/jquery.js" charset="utf-8"></script>
  <!-- データテーブル1.7.6 -->
  <script type="text/javascript" src="./js/jquery.dataTables.min.js" charset="utf-8"></script>
  <!-- テーブルにデータを設定する -->
  <script type="text/javascript" src="./js/setdatatbl.js" charset="utf-8"></script>
  <div id="list"><!-- list Start -->
  <table cellpadding="0" cellspacing="0" border="0" class="display" id="example">
<THEAD>
<TR class="gradeU">
<TH style="text-align: center;">No</TH>
<TH><input type="checkbox" id="chk_0" name="chk_0" value="" tabindex="1">消去</TH>
<TH>更新日</TH>
<TH>解約日</TH>
<TH>登録番号</TH>
<TH>車名</TH>
<TH>契約番号</TH>
<TH>使用場所</TH>
<TH>ステータス</TH>
</TR>
</THEAD>
<tbody>
<?php
for($intRow = 0; $intRow < count($aryLstData); $intRow++ ){
//該当レコードが1以上の場合
?>
<tr>
<td width="5%" align="center"><?php echo $intRow+1 ?></td>
<td width="7%">
<input type="checkbox" name="infoid[]" value="<?php echo $aryLstData[$intRow]['TInfo']['infoid']; ?>" tabindex="2"/> 
<