Test di Jquery

<?php
    session_start();

    $rootpath = '../';

    include $rootpath."_includes/config.php";
    include CLASSES."dbUtil/dbUtil.php";
    include CLASSES."dbUtil/varie.dbUtil.php";


    $dbUtil = new dbUtil();
    $varie  = new varie();


    $template = "template.php";
    $body = "index.inc.php";

    $maxData = 10;

    try {


        if(isset($_GET["logout"])){

            $_SESSION = array();
            session_destroy();

            //header('Location:'.$rootpath.'');
        }


            //sponsor
            $sponsor = $varie->sponsor(SPONSOR_QUADRATO);
            $eventi = $varie->eventi();




$checkSystemLogin = 0; // 0 Login da effettuare - 1 Login Effettuato Correttamente - 2 Login errato


$userId=0;
$userTypeId=0;
$userSpazioClubId=0;


     function check($user,$password){

        global $dbUtil;

        $_SESSION = array();


        // visione della tabella

                $dati=mysql_query("SELECT * FROM User2 WHERE Username='".$user."' AND Password='".$password."'");
               // $sql = "SELECT * FROM ".TABLE_USER2." WHERE Username='".$user."' AND Password='".$password."'";
                $dbUtil->query($sql);
                //echo $sql;


        while($array=$dbUtil->fetchAssoc()){

        $usernme=$array["Username"];

        $passwrd=$array["Password"];

            if (($user==$usernme) AND ($password==$passwrd)) {


                            $_SESSION["session_username"]  = $usernme;
                           // $_SESSION["session_password"]  = $passwrd;
                            $_SESSION["session_userID"]    = $array["UserId"];
                            $_SESSION["session_userTypeID"]= $array["TypeUser"];
                            $_SESSION["session_mail"]      = $array["Email"];
                            $_SESSION["session_loginok"]   = '1';

               return true;

            }

        }

                //$dbUtil->pre($array);

    return false;

    }





    if ($_GET['login']=='1') {



            // check Username e Password

            if(isset($_POST["username"])){



                 if ($md5Mode==1)

                 {
                     $pwd = md5($_POST["password"]);
                 } else

                 {
                         $pwd = $_POST["password"];
                 }



                 if (check($_POST["username"],$pwd)){


                         $checkSystemLogin = '1';

                         //header('Location:'.$_SERVER["HTTP_REFERER"].'');
                         $mess = "Login effettuato correttamente";





                 }else{



                         $mess="Errore di connessione - NOME UTENTE o PASSWORD ERRATA";

                         // echo "<META http-equiv=\"Refresh\" Content=\"0;url=index.php?error=$mess\">";

                         $checkSystemLogin = 2;

                 }

             }else{



                             $mess="Errore di connessione - NOME UTENTE o PASSWORD ERRATA";

                             // echo "<META http-equiv=\"Refresh\" Content=\"0;url=index.php?error=$mess\">";

                             $checkSystemLogin = 2;

             }



     }


    } catch (Exception $exc) {
        $mess = $exc->getMessage();
    }









    $dbUtil->closeDb();

    require FLD_TEMPLATES.$template;
?>