Hi everyone.. newbie here..

I got a little problem in displaying results from dropdown.
It just display the result bases on 1st and 2nd dropdown, but not for the 3rd dropdown.
I have spent so much time in this problem.
Hoping someone can help me with this issue.

Here is the code:

funcc.php

<?php
//**************************************
// Page load dropdown results //
//**************************************
function getTierOne()
//function getTierOne()
{
$result = mysql_query("SELECT DISTINCT e_jenis FROM `asm_institusi` where e_jenis<>127 and e_jenis<>45 and e_jenis<>99 and e_jenis<>0 and e_jenis<>5 GROUP BY e_jenis ASC")
//$result = mysql_query("SELECT DISTINCT tier_one FROM two_drops")
or die(mysql_error());

while($tier = mysql_fetch_array( $result ))

{
echo '<option value="'.$tier['e_jenis'].'">'.$tier['e_jenis'].'</option>';
/*echo '<option value="'.$tier['tier_one'].'">'.$tier['tier_one'].'</option>';*/
}

}
?>


<?php
//**************************************
// First selection results //
//**************************************
if($_GET['func'] == "drop_1" && isset($_GET['func'])) {
drop_1($_GET['drop_var']);
}

function drop_1($drop_var)
{
include_once('dbb.php');
$result = mysql_query("SELECT * FROM asm_institusi WHERE e_jenis='$drop_var'")
//$result = mysql_query("SELECT * FROM two_drops WHERE tier_one='$drop_var'")
or die(mysql_error());

/*?>echo '<select name="tier_two" id="tier_two">'<?php */
echo ' Nama Institusi <select name="e_id" id="e_id">

<option value=" " disabled="disabled" selected="selected">Choose one</option>';

while($drop_2 = mysql_fetch_array( $result ))
{
echo '<option value="'.$drop_2['e_id'].'">'.$drop_2['e_nama'].'</option>';
}

}


function getMonth()
{
$result = mysql_query("SELECT e_keterangan FROM `asm_bulan`")
or die(mysql_error());

echo ' Bulan <select name="e_id" id="e_id">

<option value=" " disabled="disabled" selected="selected">Choose one</option>';

while($tier = mysql_fetch_array( $result ))
{
echo '<option value="'.$tier['e_id'].'">'.$tier['e_keterangan'].'</option>';
}

echo '</select> ';
echo '<br><br><input type="submit" name="submit" value="Submit" />';

}?>



reports-2.php


<?php
include('funcc.php');
?>

<!-- ----------------------THIS IS FOR DROPDOWN ----------------->
<script type="text/javascript">
$(document).ready(function() {
$('#wait_1').hide();
$('#drop_1').change(function(){
$('#wait_1').show();
$('#result_1').hide();
$.get("funcc.php", {
func: "drop_1",
drop_var: $('#drop_1').val()
}, function(response){
$('#result_1').fadeOut();
setTimeout("finishAjax('result_1', '"+escape(response)+"')", 400);
});
return false;
});
});

function finishAjax(id, response) {
$('#wait_1').hide();
$('#'+id).html(unescape(response));
$('#'+id).fadeIn();
}
</script>

<h5><p>
<form action="" method="post">

Kod Jenis Institusi <select name="drop_1" id="drop_1">

<option value="" selected="selected" disabled="disabled">Select a Category</option>

<?php getTierOne(); ?>

</select>

<span id="wait_1" style="display: none;">
<img alt="Please Wait" src="ajax-loader.gif"/>
</span>
<span id="result_1" style="display: none;"></span>


</form>
</p></h5>


<?php
if(isset($_POST['submit'])){
$drop = $_POST['drop_1'];
//$drop = $drop_2;
$tier_two2 = $_POST['e_id'];
$tier_month = $_POST['e_id'];
$tier_two = $_POST['e_nama'];
//echo $drop." & ".$tier_two2;
?>

<?php
// ------------------------ PAGGIL INSTITUSI --------------------------//
$row = mysql_fetch_array( $results);
$results = mysql_query("SELECT
asm_institusi.e_nama as 'Institusi1',
asm_institusi.e_id
FROM
tr_tokens_21639
INNER JOIN asm_institusi ON tr_tokens_21639.e_kampus = asm_institusi.e_id
where e_kampus=$tier_two2 GROUP BY e_kampus")
or die(mysql_error());

// ------------------------ **************** --------------------------//
?>

<br /><br />

<?php
// ------------------------ FOR TABLE 1--------------------------//
$row = mysql_fetch_array( $results);
$results = mysql_query("SELECT
vw_combine_respongraduan.Bulan AS 'Bulan',
vw_combine_respongraduan.Tahun AS 'Tahun',
vw_combine_respongraduan.Graduan AS 'Graduan',
vw_combine_respongraduan.responden AS 'Responden',
vw_combine_respongraduan.`kadar respon(%)` AS `Kadar Respon(%)`
FROM
vw_combine_respongraduan
where e_kampus=$tier_two2 and Bulan=$tier_month
GROUP BY e_kampus, Bulan")
or die(mysql_error());
//echo $row2['Jumlah'];
?>

<br>

<?PHP

echo "<b>JADUAL 1: KADAR RESPONS, </b><b>" . $row['Institusi1']. "</b>" ; ?><br><br>

<?php
echo "<table border='1'>"; // start a table tag in the HTML

echo "<tr> <th>Bulan</th> <th>Tahun</th> <th>Graduan</th><th>Responden</th><th>Kadar Respons(%)</th> </tr>";
while($row = mysql_fetch_array($results)){ //Creates a loop to loop through results

echo "<tr><td>" . $row['Bulan'] . "</td><td>" . $row['Tahun'] . "</td><td>" . $row['Graduan'] . "</td><td>" . $row['Responden'] . "</td><td>" . $row['Kadar Respon(%)'] . "</td></tr>"; //$row['index'] the index here is a field name
}

echo "</table>"; //Close the table in HTML
?>
<br><br><br>
<?php
}
?>
<!-- ------------------------ END DROPDOWN -------------------->


Thanks in advance .