รบกวนช่วยดูโค๊ด select ให้หน่อยครับ มีปัญหาในระบบแก้ไขงานอ่ะครับ

 <?
   

 
 
 echo $sql5="select * from company_work where work_id = '".$_SESSION['UserID']."'";
 
  $Quser = mysql_query($sql5);		
  $numrow= mysql_num_rows($Quser);
 if($numrow>0){
  $Rcom = mysql_fetch_array($Quser);
		
		$work_name =  $Rcom["work_name"];
		$num_job =  $Rcom["num_job"];
		$Salary =  $Rcom["Salary"];
		$Email = $Rcom["Email"];
		$sex =  $Rcom["sex"];
		$age =  $Rcom["age"];
		$Degree =  $Rcom["Degree"];
		$prop_job = $Rcom["prop_job"];
  }

?>         
   
            
    
  
<center>


<form name="form1" method="post" action="update_job.php">
<input type="hidden" name="wid" id="wid"  value= "<? echo $_REQUEST['w_id']?>"/>
<input type="hidden" name="chk" id="chk"  value= "edit"/>
  <table border="1">
   <tr>
        <td width="200"><h3> &nbsp;ตำแหน่งที่รับ</h3></td>
        <td width="255"><input name="txtjob" type="text" id="txtjob" size="40" value="<? echo $num_job?>">
        </td>
      </tr>
      <tr>
        <td><h3> &nbsp;จำนวนที่รับ</h3></td>
        <td><h3><input name="txtnum" type="text" id="txtnum" value="<? echo $work_name?>">
       &nbsp; อัตรา</h3>
        </td>
      </tr>
      <tr>
        <td><h3>&nbsp;ระดับเงินเดือน</h3></td>
        <td><h3><input name="txtsalary" type="text" id="txtsalary" size="20" value="<? echo $Salary?>">&nbsp;บาท</h3>
        </td>
      </tr>
      <tr>
      
      <tr>
        <td><h3>&nbsp;เพศ</h3></td>
        <td><input name="txtsex" type="text"  id="txtsex" size="10" value="<? echo $sex?>">
        </td>
      </tr>
      
      <tr>
        <td><h3>&nbsp;อายุ</h3></td>
        <td><h3><input name="txtage" type="text"  id="txtage" size="10" value="<? echo $age?>">&nbsp;ปี</h3>
        </td>
      </tr>
      
       <tr>
        <td><h3>&nbsp;วุฒิการศึกษา</h3></td>
        <td><input name="txtdegree" type="text"  id="txtdegree" size="40" value="<? echo $Degree?>">
        </td>
      </tr> 
      
       <tr>
        <td><h3>&nbsp;สวัสดิการ/คุณสมบัติ</h3></td>
        <td><textarea name="txtwel" cols="40" rows="5" id=""><? echo $prop_job?></textarea>
        </td>
      </tr> 
  </table>
  <br/>
  <input type="submit" name="button" value="บันทึก">
</form>
	

</center>
</td></tr></table>
 

<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<?
require("connect.inc_jac.php");

//echo $_REQUEST['chk'];
if($_REQUEST['chk']=="edit"){
 $strSQL="update company_work SET work_name='".trim($_POST["txtjob"])."',num_job='".trim($_POST["txtnum"])."',Salary='".trim($_POST["txtsalary"])."',sex='".trim($_POST["txtsex"])."',age='".trim($_POST["txtage"])."',Degree='".trim($_POST["txtdegree"])."',prop_job='".trim($_POST["txtwel"])."' where  work_id ='".$_REQUEST['wid']."' ";
$objQuery = mysql_query($strSQL);
echo "<script>alert('แก้ไขข้อมูลเรียบร้อย');window.location.href='look_job.php';</script>";
	
}
if($_REQUEST['chk']=="delete"){
echo $sql="delete from company_work WHERE work_id='".$_REQUEST['w_id']."'";
$quer=mysql_query($sql);
echo "<script>alert('ลบข้อมูลเรียบร้อย');window.location.href='look_job.php';</script>";
	}
mysql_close();
	
?>

   </td>
          <td align="center" style="padding:10px"><a href="edit_job.php?w_id=<? echo $recQuery['work_id'];?>"><img src="image/edit.jpg" border="0"></a>&nbsp;&nbsp;<a href="update_job.php?w_id=<? echo $recQuery['work_id'];?>&chk=delete"><img src="image/delete.jpg" border="0"></a></td