มันไม่ยอมส่งค่า id_detail ค่ะ ต้องทำไงให้มันส่งค่าค่ะ

<? $id_addtool=$objResult3["id_addtool"];$id_detail=$objResult3["id_detail"];
		echo"	<a href=addtool_delete.php?id_addtool=$id_addtool><img src=pic/trash-empty-icon.png ></a>";?>

<?
include('config.php'); 
	$id_detail=$_REQUEST['id_detail'];
	$id_addtool=$_REQUEST['id_addtool'];

$strSQL1 = "delete from addtool  where id_addtool = $id_addtool";
$objQuery1 = mysql_query($strSQL1);
echo"<script>alert('--ลบข้อมูลเรียบร้อยแล้ว--');window.location='add_tool.php?id_detail=$id_detail';</script>";
mysql_close($objConnect1);
?>