php REQUEST method from menu problem. please help

Hi guys,

I have two drop down menu(root menu and sub menu). I have a method trying to request its typeid using $_REQUEST["Typeid"]. However, somehow firefox(IE can) does not know i want the 2rd menu's typeid as my typeid. what can i do?


my database looks like this:
Typeid typename parentid rootid......
1 dog 0 1
2 cat 0 2
3 bird 0 3
4 Puppy dog 1 1
5 kitty kitten 1 2

Menu code:

$sql2="select * from pet_vclass where Parentid=0 order by Typeid asc";
//echo $sql1;
$result2=mysql_query($sql2);
while($arr2=mysql_fetch_array($result2))
{
?>
<option value="<? echo $arr2["Typeid"]?>">

<? echo $arr2["Typename"]?></option>
<? }?>

$sql6="select * from pet_vclass where Parentid=1 order by Typeid asc";
//echo $sql1;
$result6=mysql_query($sql6);
while($arr6=mysql_fetch_array($result6))
{
?>
<option value="<? echo $arr6["Typeid"]?>">

<? echo $arr6["Typename"]?></option>
<? }?>

-----------------------------------------------------------
request typeid:

$Typeid = $_REQUEST["Typeid"];