Script paginazione

[newOne]

Ciao,
ho un piccolo problema con uno script di pagination.
Lo script funziona bene, ma quando voglio far passare dei valori attraverso un form di ricerca mi mostra solo i risultati della prima pagina, mentre le altre no.

Se in questa query inserisco il valore manualmente funziona:

$tableName="user";
$query = "SELECT COUNT(*) as num FROM $tableName WHERE userNat = 'it'";

ma se invece invio lo stesso valore attraverso un semplice form con metodo post mi mostra solo la prima pagina di ricerca mentre le altre no

$userNat = mysql_escape_string($_POST['nazione']);
$tableName="user";


$query = "SELECT COUNT(*) as num FROM $tableName WHERE userNat = '$userNat'";

Qui di seguito allego tutto lo script...è pronto per l'uso. Sapreste darmi una mano? Grazie.

<?php
include 'db_connection.php';

$userNat = mysql_escape_string($_POST['nazione']);


$tableName="user";
$targetpage = "index.php";
$limit = 3;

$query = "SELECT COUNT(*) as num FROM $tableName WHERE userNat = '$userNat'";
$total_pages = mysql_fetch_array(mysql_query($query));
$total_pages = $total_pages[num];

$stages = 3;
$page = mysql_escape_string($_GET['page']);
if($page){
$start = ($page - 1) * $limit;
}else{
$start = 0;
}

// Get page data
$query1 = "SELECT * FROM $tableName WHERE userNat = '$userNat' LIMIT $start, $limit";
$result = mysql_query($query1);

// Initial page num setup
if ($page == 0){$page = 1;}
$prev = $page - 1;
$next = $page + 1;
$lastpage = ceil($total_pages/$limit);
$LastPagem1 = $lastpage - 1;


$paginate = '';
if($lastpage > 1)
{




$paginate .= "<div class='paginate'>";
// Previous
if ($page > 1){
$paginate.= "<a href='$targetpage?page=$prev'>previous</a>";
}else{
$paginate.= "<span class='disabled'>previous</span>";	}



// Pages
if ($lastpage < 7 + ($stages * 2))	// Not enough pages to breaking it up
{
for ($counter = 1; $counter <= $lastpage; $counter++)
{
if ($counter == $page){
$paginate.= "<span class='current'>$counter</span>";
}else{
$paginate.= "<a href='$targetpage?page=$counter'>$counter</a>";}
}
}
elseif($lastpage > 5 + ($stages * 2))	// Enough pages to hide a few?
{
// Beginning only hide later pages
if($page < 1 + ($stages * 2))
{
for ($counter = 1; $counter < 4 + ($stages * 2); $counter++)
{
if ($counter == $page){
$paginate.= "<span class='current'>$counter</span>";
}else{
$paginate.= "<a href='$targetpage?page=$counter'>$counter</a>";}
}
$paginate.= "...";
$paginate.= "<a href='$targetpage?page=$LastPagem1'>$LastPagem1</a>";
$paginate.= "<a href='$targetpage?page=$lastpage'>$lastpage</a>";
}
// Middle hide some front and some back
elseif($lastpage - ($stages * 2) > $page && $page > ($stages * 2))
{
$paginate.= "<a href='$targetpage?page=1'>1</a>";
$paginate.= "<a href='$targetpage?page=2'>2</a>";
$paginate.= "...";
for ($counter = $page - $stages; $counter <= $page + $stages; $counter++)
{
if ($counter == $page){
$paginate.= "<span class='current'>$counter</span>";
}else{
$paginate.= "<a href='$targetpage?page=$counter'>$counter</a>";}
}
$paginate.= "...";
$paginate.= "<a href='$targetpage?page=$LastPagem1'>$LastPagem1</a>";
$paginate.= "<a href='$targetpage?page=$lastpage'>$lastpage</a>";
}
// End only hide early pages
else
{
$paginate.= "<a href='$targetpage?page=1'>1</a>";
$paginate.= "<a href='$targetpage?page=2'>2</a>";
$paginate.= "...";
for ($counter = $lastpage - (2 + ($stages * 2)); $counter <= $lastpage; $counter++)
{
if ($counter == $page){
$paginate.= "<span class='current'>$counter</span>";
}else{
$paginate.= "<a href='$targetpage?page=$counter'>$counter</a>";}
}
}
}

// Next
if ($page < $counter - 1){
$paginate.= "<a href='$targetpage?page=$next'>next</a>";
}else{
$paginate.= "<span class='disabled'>next</span>";
}

$paginate.= "</div>";


}
echo $total_pages.' Results';
// pagination
echo $paginate;
?>

<ul>

<?php


while($row = mysql_fetch_array($result))
{

echo '<li>'.$row['userName'].'</li>';

}

?>
</ul>