สอบถามผู้รู้ครับ มีปัญหาเกี่ยวกับ insert mutirecord ทำ ckeckbox เพือเลือกข้อมูล

<form name="frmMain" action="PageMultiCheckbox2.php" method="post" OnSubmit="return onSave();">
<?

$strSearch = $_POST["txtSearch"];

$objConnect = mysql_connect("localhost","root","mb,lNwmp") or die("Error Connect to Database");
$objDB = mysql_select_db("hr");
mysql_query("SET NAMES UTF8");
$strSQL = "SELECT * FROM employee WHERE (Code LIKE '%".$strSearch."%' or Section LIKE '%".$strSearch."%' )";
$objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
?>


<table width="600">
  <tr>
<th width="91" nowrap="nowrap" bgcolor="#FFCC00" style="font-size: 12px"> <div align="center">
<input name="CheckAll" type="checkbox" id="CheckAll" value="Y" onClick="ClickCheckAll(this);">
</div></th>
    <th width="91" nowrap="nowrap" bgcolor="#FFCC00" style="font-size: 12px"> <div align="center">รหัสพนักงาน<br />
    ID </div></th>
    <th width="98" nowrap="nowrap" bgcolor="#FFCC00" style="font-size: 12px"> <div align="center">ชื่อพนักงาน<br />
    EMPLOYEE NAME </div></th>
    <th width="80" nowrap="nowrap" bgcolor="#FFCC00" style="font-size: 12px"> <div align="center">ตำแหน่ง<br />
    POSITION TITLE</div></th>
    <th width="59" nowrap="nowrap" bgcolor="#FFCC00" style="font-size: 12px"> <div align="center">วันที่<br />
    DATE </div></th>
        <th width="59" nowrap="nowrap" bgcolor="#FFCC00" style="font-size: 12px"> <div align="center">เริ่มเวลา<br />
    START </div></th>
    <th width="59" nowrap="nowrap" bgcolor="#FFCC00" style="font-size: 12px"> <div align="center">ถึงเวลา<br />
    END </div></th>
    <th width="100" nowrap="nowrap" bgcolor="#FFCC00" style="font-size: 12px"> <div align="center">ฝ่าย<br />
      Department<br />
    </div></th>
    <th width="71" nowrap="nowrap" bgcolor="#FFCC00" style="font-size: 12px; color: #666;"> <div align="center">ประเภทการทำโอที<br />
        OT TYPE<br />
    </div></th>
    <th width="71" nowrap="nowrap" bgcolor="#FFCC00" style="font-size: 12px; color: #666;"> <div align="center">ลักษณะงานที่ทำ<br />
        Mature of Job<br />
    </div></th>
  </tr>
</tr>
<?
while($objResult = mysql_fetch_array($objQuery))
{
$i++;	
?>
<tr>
    <td height="24" align="center" nowrap="nowrap" bgcolor="#66CCFF"><input type="checkbox" name="chkAdd[]" id="chkAdd<?=$i;?>" value="<?=$objResult["Code"];?>"></td>
    
    <td nowrap="nowrap" ><div align="center"><input type="text" name="txtCode[]" value="<?php echo $objResult["Code"];?>" size="10" readonly></div></td>
    
    <td nowrap="nowrap" ><input type="text" name="txtName_th[]" value="<?php echo $objResult["Name_th"];?>" size="20" readonly></td>
    <td nowrap="nowrap"  ><input type="text" name="txtPosition[]" value="<?php echo $objResult["Position"];?>" size="20" readonly></td>
    <td nowrap="nowrap"  ><input name="txtdate[]" type="text" id="txtdate" value="<?php echo date("Y/m/d"); ?>" size="7" readonly></td>
    <td align="right" nowrap="nowrap"  style="font-size: 12px"><label for="select"></label>
      <label for="lblStart"></label>
      <select name="lblStart[]" id="lbltype">
        <option value="17:00:00">17:30</option>
        <option value="05:00:00">05:30</option>
        <option value="08:00:00">08:00</option>
      </select></td>
    <td align="right" nowrap="nowrap"  style="font-size: 12px"><label for="select"></label>
      <label for="lblEnd"></label>
      <select name="lblEnd[]" id="lbltype">
        <option value="20:00:00">20:00</option>
        <option value="08:00:00">08:00</option>
        <option value="17:00:00">17:00</option>
    </select></td>
    <td nowrap="nowrap" ><input type="text"  name="txtSection[]" value="<?php echo $objResult["Section"];?>" size="20" readonly></td>
    <td align="right" nowrap="nowrap"  style="font-size: 12px"><label for="select"></label>
      <label for="lbltype"></label>
      <select name="lbltype[]" id="lbltype">
        <option value="ทำล่วงเวลาวันทำงานปกติ">A=ทำล่วงเวลาวันทำงานปกติ</option>
        <option value="ทำงานวันหยุด">B=ทำงานวันหยุด</option>
        <option value="ทำล่วงเวลาวันหยุด">C=ทำล่วงเวลาวันหยุด</option>
      </select></td>
    <td nowrap="nowrap"  style="font-size: 12px"><textarea name="txtjob[]" cols="35" rows="1" id="txtjob"></textarea></td>
  </tr>
<?
}
?>
</table>
<?
mysql_close($objConnect);
?>
<input type="submit" name="btnSave" value="Save">
<input type="hidden" name="hdnCount" value="<?php echo $i;?>">
</form>