Problème de formulaire puis requete

Bonjour voila je sai pas ce quie ce passe avec ce formulaire mais rien marche alors qu'il me semble  correcte
Donc y aurai t il qq un qui peut me dire ce quie ne va pas?
Merci




<?php

 require('includes/application_top.php');
 $jour=$HTTP_POST_VARS['jour'];
 $mois=$HTTP_POST_VARS['mois'];
 $an=$HTTP_POST_VARS['an'];
 if (!isset($_POST['submit'])){
 ?>
<style type="text/css">
<!--
.Style1 {color: #000099}
-->
</style>

<center>
  <h1 class="Style1">Rapport de comptabilit&eacute;</h1>
</center>
<form id="form1" name="form1" method="get" action="">
  <table width="284" border="0" align="center">
    <tr align="center">
      <td colspan="3"><span class="Style1">Veuillez saisir la date du rapport </span></td>
    </tr>
    <tr>
      <td width="90" align="center">Jour</td>
      <td width="90" align="center">Mois</td>
      <td width="90" align="center">Ann&eacute;e</td>
    </tr>
    <tr>
      <td align="center"><input name="textfield" type="text" maxlength="2" checked="checked"/></td>
      <td align="center"><input name="textfield" type="text" maxlength="2" checked="checked"/></td>
      <td align="center"><input name="textfield" type="text" maxlength="4" checked="checked"/></td>
    </tr>
    <tr>
      <td colspan="3" align="center"><INPUT TYPE="submit" VALUE="Download" name="submit" /></td>
    </tr>
  </table>
 
</form>

<?php

 }
// Liste les données de la table
// -------------------------------------------
elseif (isset($_POST['submit']) && isset($HTTP_POST_VARS['jour']) && isset($HTTP_POST_VARS['mois']) && isset($HTTP_POST_VARS['an'])) {
 $date= " " . $an . "-" . $mois . "-". $jour . " " ;
$chifr=100000;
$resQuery = "select p.delivery_name, p.last_modified as lm, op.products_tax as tx, op.products_price as pp, p.orders_id as oid, p.delivery_postcode, p.delivery_street_address, p.delivery_city, p.customers_telephone from " . TABLE_ORDERS . " p, " . TABLE_ORDERS_PRODUCTS . " op where p.orders_id = op.orders_id and p.orders_status = '" . (int)$chifr . "' ";
$date=" and p.last_modified like '" . $date . "%' ";
echo $date;
$resQuery = tep_db_query($resQuery . $date);

header("Content-disposition: filename=table.csv");
header("Content-Type: application/vnd.ms-excel");
header("Content-Transfer-Encoding: binary"); // Surtout ne pas enlever le \n
header("selfclose()");

if (mysql_num_rows($resQuery) != 0) {
  // titre des colonnes
  $fields = mysql_num_fields($resQuery);
  $i = 0;
  while ($i < $fields) {
    echo mysql_field_name($resQuery, $i).";";
    $i++;
  }
  echo "\n";

  // données de la table
  while ($arrSelect = mysql_fetch_array($resQuery, MYSQL_ASSOC)) {
   foreach($arrSelect as $elem) {
    echo "$elem;";
   }
   echo "\n";
  }
}

}
else
{
 
}
?>

<?php require(DIR_WS_INCLUDES . 'application_bottom.php'); ?>