ทำยังไงให้เลือกเมนูlist แล้วค่าออกมาที่ช่อง textbox ครับ

<form id="form1" name="form1" method="post" action="">
<select name="test" id="test" onChange="location.href='menu.php?c_id='+this.value;" style="width:200px">
<option value="">- test-</option>
<?
//include('');
$sql="select * from tb_test order by c_id ASC";
$dbquery=mysql_db_query($dbname,$sql);
while($result=mysql_fetch_array($dbquery)){
if($c_id == $result[c_id]){ //เพื่อให้ แสดง $c_id ที่ส่งค่ามาให้
?>
<option value="<?=$result[c_id];?>" selected="selected"><?=$result[c_name];?></option>
<?
}else{?>
<option value="<?=$result[c_id];?>"><?=$result[c_name];?></option>

<?
} }
?>
</select>
<br />
<br />
<?
if($c_id != ""){ //กรณีที่ มี่คา c_id ส่งมาให้ทำงาน

$sql_sub="select * from tb_test where c_id = '$c_id' ";
$dbquery_sub = mysql_db_query($dbname, $sql_sub);
$result_sub=mysql_fetch_array($dbquery_sub);
?>
<input type="text" name="test" value="<?=$row_sub['name']?>">
<?
}}
?>
</select>
</form>

<tr>
          <td>total order</td>
           <select name="id_order"  id="id_order">
              <option value="0" selected="selected">เลือก</option>
              <? 
		 include "connect.php";
		$sql="select * from order";
		$result=mysql_query($sql);
	  	while($rs=mysql_fetch_array($result)) {
			$id_order=$rs[id_order];
			$total_order=$rs[total_order];
			echo "<OPTION VALUE='$id_order'>$total_order</OPTION>";
		}
	?>
          </select>
</tr>

<select name="test" id="test" onChange="location.href='menu.php?id_order='+this.value;" style="width:200px">

<form id="form1" name="form1" method="post" action="">
<select name="test" class="show_red" id="test" style="width:200px" onChange="this.form1.txt_total.value= this.value;">
  <option>..</option>
<?
include( "connect_odbc.php" );
$sql1 =  "Select  * from  tb_order where mem_id ='$mem_id' "; 
$result1 = odbc_exec($connect, $sql) or die ("เอ็กซิคิวส์คำสั่งไม่ได้");

while(odbc_fetch_row($result1))// ยังแบ่งเป็นหน้า ๆ ไม่ได้
{

$mem_id=odbc_result($result1,"mem_id");
$id_order=odbc_result($result1,"id_order");
$total_order=odbc_result($result1,"total_order");

			echo "<OPTION VALUE='$id_order'>$id_order</OPTION>";
		}

?>
</select>
<br />
<br />
<?
if($id_order != ""){ //กรณีที่ มี่คา id_order ส่งมาให้ทำงาน

$sql_sub="select * from tb_order where id_order = '$id_order' ";
$dbquery_sub = odbc_exec($connect, $sql_sub);
$result_sub=odbc_fetch_array($dbquery_sub);

?>
<input name="txt_total" type="text" id="txt_total" value="<?=$result_sub['total_order']?>">
<?
}

?>
</select>
</form>

<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<form id="form" name="form" method="post" action="">
<select name="test" class="show_red" id="test" style="width:200px" onChange="this.form1.txt_total.value= this.value;">
  <?
include ("connect_db.php");
$strSQL = "SELECT DISTINCT EVALUATE.TQF.PROGRAMID,AVSREG.PROGRAM.PROGRAMNAME,EVALUATE.TQF.TQF_ID,EVALUATE.TQF.DESCRIPTION  FROM EVALUATE.TQF 
Inner Join AVSREG.PROGRAM ON EVALUATE.TQF.PROGRAMID = AVSREG.PROGRAM.PROGRAMID";
$objParse = oci_parse ($objConnect, $strSQL);
oci_execute ($objParse,OCI_DEFAULT);
?>
  <?
while($objResult = oci_fetch_array($objParse,OCI_BOTH))
{
 /*?>$PROGRAMID=odbc_result($objResult,"PROGRAMID");
$TQF_ID=odbc_result($objResult,"TQF_ID");
$DESCRIPTION=odbc_result($objResult,"DESCRIPTION");<?php */
?>
		<option value="<?=$objResult["PROGRAMID"];?>"><?=$objResult["PROGRAMNAME"];?></option>;
	  <?
}
?>

</select>
<br />
<br />
<?
if($_GET["PROGRAMID"] != "")
	{

$strSQL = "SELECT DISTINCT EVALUATE.TQF.PROGRAMID,AVSREG.PROGRAM.PROGRAMNAME,EVALUATE.TQF.TQF_ID,EVALUATE.TQF.DESCRIPTION FROM EVALUATE.TQF 
Inner Join AVSREG.PROGRAM ON EVALUATE.TQF.PROGRAMID = AVSREG.PROGRAM.PROGRAMID";
$objParse = oci_parse ($objConnect, $strSQL);
oci_execute ($objParse,OCI_DEFAULT);

?>
<input name="txt_total" type="text" id="txt_total" value="<?=$objResult["TQF_ID"];?>><?=$objResult["DESCRIPTION"];?>">
<?
}

?>
  <?
oci_close($objConnect);
?>
</select>
</form>