cookies in IE

function login($data){
    $data['nickname']=htmlspecialchars($data['nickname']);
    $data['nickname']=addslashes($data['nickname']);
    $data['password']=md5(htmlspecialchars($data['password']));
    
    $query="SELECT*FROM fans WHERE nickname='".$data['nickname']."' AND password='".$data['password']."'";
    if($r=mysql_query($query)){
        if(mysql_num_rows($r)==1){
            $row=mysql_fetch_array($r);
                //set session fan id    
                    $_SESSION['fan_id']=$row['fan_id'];
                //set key
                    $key=random_pass(80);
                    $query="UPDATE fans SET loginkey='".$key."' WHERE fan_id='".$row['fan_id']."'";
                    if(!mysql_query($query)){
                        print mysql_error();
                    }                        
                //set cookie
                    if(!setcookie('loginkey',$key,time()+3600*24*100)){
                        print'Problems with setting the cookie!';
                    }
                //send to news page
                    print $_SESSION['fan_id'].' '.$key;
                    print'<br>U bent succesvol ingelogd. U wordt binnen 3 seconden doorverwezen naar de home pagina.';
                    header('Refresh: 3; URL=news.php');
        }else{
            header('location:login.php?wrong');
        }
    }    
}

if(isset($_GET['wrong'])){
    print'<font color="#FF0000"><b>Wrong Login! Please try again.</b></font><br>';
}
$form=new FormHandler();
$form->TextField('Nickname','nickname',FH_STRING);
$form->PassField('Password','password',FH_STRING);
$form->OnCorrect('login');
$form->SubmitButton('login');
$form->flush();

if(!empty($_COOKIE['loginkey']) AND !isset($_SESSION['fan_id'])){
      $query="SELECT*FROM fans WHERE loginkey='".$_COOKIE['loginkey']."' LIMIT 1";
        if($r=mysql_query($query)){
            if(mysql_num_rows($r)==1){
                $row=mysql_fetch_array($r);
                $_SESSION['fan_id']=$row['fan_id'];
            }
        }else{
            print mysql_error();
        }
}

if(isset($_SESSION['fan_id']) AND is_numeric($_SESSION['fan_id'])){
    if(!isset($_COOKIE['loginkey'])){
        //print'Cookies are not enabled!<br>';
    }
    $finfo=faninfo($_SESSION['fan_id']);
    print'Welkom '.$finfo['nickname'].' - <a href="myprofile.php">Mijn Profiel</a>  - <a href="logout.php">Log uit</a>';
    $flogin=1;
}else{
    print'<a href="login.php">Log in</a> - <a href="register.php">Registreer</a>';
    $flogin=0;
}