Untitled

<html>
<title>Guess the number</title>
<head>
<SCRIPT LANGUAGE = "JavaScript">
var username = window.prompt('Please insert your username', 'Zac');
var password = window.prompt('Ok ' + username + ' please insert your password', '');
if(username != 'Zac' && username != 'zac')
{
alert('Sorry that username cannot be found!, please try again');
username = window.prompt('Please insert your username', 'Zac');
password = window.prompt('Ok ' + username + ' please insert your password', '');
}
while(password != 'Mone50')
{
alert('Sorry that password isn\'t right, please try again');
username = window.prompt('Please insert your username', 'Zac');
password = window.prompt('Ok ' + username + ' please insert your password', '');

}
document.write('Welcome ' + username + ' you now have access');
</script>
</head>
</html>