รบกวนพี่ๆช่วยแก้โค้ดจาวาสคริปต์ส่งค่าคำนวนให้ถูกช่องsumและcountหน่อยครับ ขอบคุณจริงๆครับ

<script language="javascript">

function bind(objSelect){
	
	  document.getElementById("count").value = 1;
	  document.getElementById("sum").value = objSelect.options[objSelect.selectedIndex].value+" บาท";
}

function f_calculate(obj){
	 objSelect = document.getElementById("select")
	 var val = objSelect.options[objSelect.selectedIndex].value;
	 document.getElementById("sum").value = obj.value * val+" บาท";
	 
}

</script>

<form id="form2" name="form2" method="post" action="">
       <table width="744" border="0" cellspacing="0" cellpadding="0">
        <tr>
          <td width="461">
            <div align="left"><a href="Pic/<?=$objResult["Order_Pic"];?>" target="_blank">
              <?
	include('config.inc.php');
	
	//$strSQL = "SELECT customer.C_ID,picture.Order_Pic FROM picture INNER JOIN customer ON picture.C_ID ='".$_SESSION['UserID']."' ";

	$strSQL = "SELECT Order_Pic FROM picture WHERE picture.C_ID = '".$_SESSION['UserID']."' ";
	
	
	$objQuery = mysql_query($strSQL) or die ("Error Query [".$strSQL."]");
	
	echo"<table border=\"0\"  cellspacing=\"1\" cellpadding=\"1\"><tr>";	
	$intRows = 0;
	
	while($objResult = mysql_fetch_array($objQuery))
	{
	$intRows++; 
	
	echo "<td>";									
	?>
            <img src="Pic/<?=$objResult["Order_Pic"];?>" width="100" height="100" border="0" /></a>
              <table width="364" border="1">
                <tr>
                  <td><select name="select" id = "select<?=$intRows;?>" OnChange="bind(this)" >  
                    <?
$str = "SELECT * FROM product";
$obj = mysql_query($str) or die ("Error Query [".$str."]");
$text = trim($_POST["Order_Pic"]);
while($objRe = mysql_fetch_array($obj))
{                      
?>
                    <option value="<?=$objRe["Pro_Price"];?>">
                      <?=$objRe["Pro_Name"];?>
                    </option>
                    <?
}
?>
                  </select>
                <td width="9"><input name="count" type="text" id="count<?=$intRows;?>" value="จำนวน" onkeyup="f_calculate(this.value)" size="5"/></td>
                  <td width="9"><input name="sum" type="text" id="sum<?=$intRows;?>" value="ราคา" size="5" readonly /></td>
              </table>
              
              <?
		echo"</td>";
		if(($intRows)%1==0)
		{
		echo"</tr>";
		
		}
		else
		{
		echo "<td>";
		}	
	}
	echo"</tr></table>";
	
	?>
            </div></td>
      </table>
  

   </form>