function getBoardsSold() {
     createRequest();
     var url = "getUpdatedBoardSales-ajax.php";
     request.open("GET", url, true);
     request.onreadystatechange = updatePage;
     request.send(null);
  }

 session_start();

"Cannot modify header information -  header already send by..."

<?php 
  if (!ini_get('register_globals')) {
    $superglobals = array($_SERVER, $_ENV,
        $_FILES, $_COOKIE, $_POST, $_GET);
    if (isset($_SESSION)) {
        array_unshift($superglobals, $_SESSION);
    }
    foreach ($superglobals as $superglobal) {
        extract($superglobal, EXTR_SKIP);
    }
    ini_set('register_globals', true);
}
session_start();

if (!session_is_registered('id_seans')) {
 $loc_place='=NO=';}
 else { $loc_place='=YES=';}