Untitled

<!doctype html>
<html>
     <head>
         <script language="JavaScript" type="text/javascript">
    var users= [[],[]];
    users[0][0] = "FBI";
	users[0][1] = "123";

    function CheckPassword(form) {
            var user=form.user.value.toLowerCase();;
            var pass=form.pass.value;

            for (var i=0; i<users.length; i++)
                    if (users[i][0]==user)
                            if (users[i][1]==pass) {
                                    form.action="strona.php";
                                    return true;
                            } else {
                                    alert("Sorki, " +user+ ", zle haslo.");
                                    return false;
                            }
            alert("Niewlasciwe dane!");
            return false;
    }
    //-->
    </script>

     </head>
     <body>
     <form method="post" onsubmit="return CheckPassword(this)">
Login <input name="user"><br>
Hasło <input name="pass" type="password"><br><br> <input type="submit" value="Skocz">
<input type="reset" value="Wyczyść">
     </body>
</html>