ช่วยแก้ไขโค๊ด ตรง for กับ while หน่อยครับ คำสั่ง for กับ while มันทำให้ข้อมูลหายไปหนึ่งช่องครับ

<table width="100%" border="0" cellspacing="0" cellpadding="0">
    <tr> 
        <td height="16"><table width="100%" border="0" cellspacing="1" cellpadding="1">
            <tr> 
                </tr>
                    <tr> 
                        <td> 
    <tr bgcolor="#003399">
      <th height="36" colspan="13" bgcolor="" scope="col">
          <span class="style1"><p class="head1">Member Log List</p></span></th>
    </tr>
      <tr class="head1" bgcolor="#0066CC">
      <th class="head1" width="3%">No.</th>
      <th class="head1" width="25%">Username</th>
      <th class="head1" width="10%">Last Date Login</th>
      <th class="head1" width="10%">Last Time Login</th>
      <th class="head1" width="10%">IP Address</th>
      <th class="head1" width="4%"><div align="center"><input name="CheckAll" type="checkbox" id="CheckAll" value="Y" onClick="ClickCheckAll(this);"></div></th>
    </tr>
   
<?php 
  $strSearch = !empty($_GET['txtsearch'])?
               " where log_username like '%{$_GET['txtsearch']}%'":" where 1=1";
               
  $sql = "select * from cms_log $strSearch order by log_id desc";

  $result = mysql_query($sql)or die(mysql_error());
  $total = mysql_num_rows($result);

  $pagesize = 30; // Per Page
  $page = 1;
  
  $total_page = ceil($total/$pagesize);

  if (isset($_GET[page]))
    $page = $_GET[page];
    
  $start = ($page-1)*$pagesize;
  
  $sql .= " limit $start,$pagesize";

  $result = mysql_query($sql);
  $num = mysql_num_rows($result);
 ?>   

<!-- CheckAll Delete-->
<?
    $i = 0;
    while($row = mysql_fetch_array($result))
    {
    $i++;
?>
<!-- CheckAll Delete-->

<?php
  for ($i=1;$i<=$num;$i++){
  $row = mysql_fetch_array($result);
  $color=(@$color=="#ffffff")?"#f0f0f0":"#ffffff";
?>

  <tr bgcolor="<?php echo $color?>">
    <th><span class="style2"><?php echo $i+$start ?></span></th>
    <td><?=$row["log_username"];?></td>
    <td><?=$row["log_date"];?></td>
    <td><div align="center"><?=$row["log_time"];?></div></td>
    <td align="right"><?=$row["log_ipaddress"];?></td>
    <td align="center"><input type="checkbox" name="chkDel[]" id="chkDel<?=$i;?>" value="<?=$row["log_id"];?>"></td>
<!-- Entry Not Found -->
    <?
      }
    if($num <= 0){
    ?>
     <tr class="comment">
        <td height="30" colspan="13" align="center" valign="middle">Entry Not Found</td>
     </tr>
<!-- Entry Not Found -->
<?
    }
?>
<!-- CheckAll Delete-->
<?
    }
?>
<!-- CheckAll Delete-->
</table>

<!-- CheckAll Delete-->
     <tr class="delete_all">
      <td  class="head1" height="30"><div align="right"><input type="submit" name="btnDelete" value="Delete"><input type="hidden" name="hdnCount" value="<?=$i;?>"></div></td>
     </tr>
<!-- CheckAll Delete-->

</table>