PHP sessions in Internet Explorer
$//If there are input validations, redirect back to the login form
if($errflag) {
    $_SESSION['ERRMSG_ARR'] = $errmsg_arr;
    session_write_close();
    header("location: index.htm");
    exit();
}

//Create query
$qry="SELECT * FROM employees WHERE username='$login' AND password='$password'";
$result=mysql_query($qry);

//Check whether the query was successful or not
if($result) {
    if(mysql_num_rows($result) == 1) {
        //Login Successful
        session_regenerate_id();
        $member = mysql_fetch_assoc($result);
        $_SESSION['SESS_MEMBER_ID'] = $member['ID'];
        $_SESSION['SESS_fname'] = $member['fname'];
        $_SESSION['SESS_lname'] = $member['lname'];
        $_SESSION['SESS_username'] = $member['username'];

        session_write_close();
        header("location: login_success.php");
        exit();
    }else {
        //Login failed
        header("location: login-failed.php");
        exit();
    }
}else {
    die("Query failed");
}