Codice PHP:
//Legge i cookies
$User_Admin = $_COOKIE['User_Admin'];
$Password_Admin = $_COOKIE['Password_Admin']; 
Perché fa:

Notice: Undefined index: User_Admin in d:\www\sito.it\htdocs\paolo\include\db.php on line 13

Notice: Undefined index: Password_Admin in d:\www\sito.it\htdocs\paolo\include\db.php on line 14