No Gateway reply on these pages

Hi!

Good Day guys!

My error on the Subject line...
Sorry!
i have these two wml pages...
browse.php and cat.php

BROWSE.PHP

<?php
include "include/wml.inc";
include "config.php";
?>
<card id="index" title="Select Type">
<p align="center" mode="wrap">Welcome
<br/>
<br/>
</p>
<p align="left" mode="wrap">Type of building:
<select name="category">
<?php
$sql = "SELECT DISTINCT category FROM $tname ORDER BY category ASC";
$query = mysql_db_query($dname,$sql,$my_conn);
?>
<?php
while ($row = mysql_fetch_array($query))
{
echo "<option value=\"$row[category]\">";
echo ucwords($row[category]);
echo "</option>";
}
?>
</select>
<anchor>Submit
<go href="cat.php" method="get">
<postfield name="category" value="$category"/>
</go>
</anchor>
</p>
</card>
</wml>

CAT.PHP

<?php
include "include/wml.inc";
include "config.php";
?>
<?php
$max = 5;
$cat_search = "bank";
?>
<card id="index" title="Select Type">
<p align="center" mode="wrap">Welcome
<br/>
<br/>
Type of building: <b><?php echo ucwords($cat_search) ?></b>
</p>
<p align="left" mode="wrap">Choose a building
<br/>
<?php
if(isset($_GET['np']))
{
$pages = $_GET['np'];
}
else
{
$sqlcnt = "SELECT * FROM $tname WHERE category = '$cat_search'";
$run = mysql_db_query($dname,$sqlcnt,$my_conn);
$count = mysql_num_rows($run);
if($count > $max)
{
$pages = ceil($count/$max);
}
else
{
$pages = 1;
}
}
if(isset($_GET['st']))
{
$start = $_GET['st'];
}
else
{
$start = 0;
}

$sql = "SELECT * FROM $tname WHERE category = '$cat_search' ORDER BY place ASC LIMIT $start, $max";
$query = mysql_db_query($dname,$sql,$my_conn);
echo "<select name=\"building\">";
while ($row = mysql_fetch_array($query))
{
echo "<option value=\"$row[place]\">";
echo ucwords(strtolower($row[place]));
echo "</option>\n";
}
echo "</select>";
echo "<br/>\n";
echo "<anchor>Submit";
echo "<go href=\"building.php\" method=\"get\">";
echo "<postfield name=\"building\" value=\"$building\"/>";
echo "</go>";
echo "</anchor>";
echo "<br/>";
echo "<br/>\n";
if($pages > 1)
{
$current = ($start/$max) + 1;
if($current != 1)
{
echo '<a href="cat.php?st=' . ($start - $max) . '&np=' . $pages .'">Back </a>';
}

if($current != $pages)
{
echo '<a href="cat.php?st=' . ($start + $max) . '&np=' . $pages .'"> Next</a>';
}
}
?>
</p>
</card>
</wml>

yes the wml headers is in "include/wml.inc"
Problem is CAT.PHP errors with "NO GATEWAY REPLY"
i only created CAT.PHP with editing the SQL for BROWSE.PHP
and some formatting...
tnx guys!