小弟我遇到了个大难题

我遇到了个大难题
有个OA系统，界面有个修改，删除信息的功能，如下：
 ------------------------------------------------
| 生产厂家名称 | 操作 |
 ------------------------------------------------
| 01 | 修改 删除 |  
 ------------------------------------------------
| 02 | 修改 删除 |
 ------------------------------------------------
| 03 | 修改 删除 |
 ------------------------------------------------
| 增加 | 返回 |
 -----------------------------------------------
当我增加生产厂家时就可以删除，但原来在上面的01，02，03就无法删除，
下面是我的一部分代码：
delete.php
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PHP code

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<?
$connection=OpenConnection();
$query="delete from ba_Manufacturer where Manufacturer=$Manufacturer";
exequery($connection,$query);
?>
    <script language=javascript>
        alert("<?=$Old_Manufacturer?>");
    </script>
<?
$query="delete from ba_goods_Manufacturer where Manufacturer=$Manufacturer";
exequery($connection,$query);

header("location: list.php?Manufacturer=$Old_Manufacturer&Image_name=$Image_name&Begdt=$Begdt&Enddt=$Enddt&PAGE_START=$PAGE_START");

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PHP code

<!--

Code highlighting produced by Actipro CodeHighlighter (freeware)
http://www.CodeHighlighter.com/

-->
<?
$connection=OpenConnection();
$query="delete from ba_goods_Manufacturer where noid='$id'";

exequery($connection,$query);

header("location: show.php?Manufacturer=$Manufacturer&Old_Manufacturer=$Old_Manufacturer&Image_name=$Image_name&Begdt=$Begdt&Enddt=$Enddt&PAGE_START=$PAGE_START");

?>

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