if (isset($_POST["submit"])) {

$username = $_POST['username'];
$password = $_POST['password'];
$facebook = $_POST['facebook'];
$uplink = $_POST['uplink'];

$error = "";
	if (empty($username)) {

	$error .= "<div class='alert alert-dismissible alert-danger'>
			<button type='button' class='close' data-dismiss='alert'><i class='fa fa-remove'></i></button>
			Username Wajib di isi!
			</div>";
	}
	if (empty($password)) {
	$error .= "<div class='alert alert-dismissible alert-danger'>
			<button type='button' class='close' data-dismiss='alert'><i class='fa fa-remove'></i></button>
			Password Wajib di isi!
			</div>";
	}
	if (empty($facebook)) {
	$error .= "<div class='alert alert-dismissible alert-danger'>
			<button type='button' class='close' data-dismiss='alert'><i class='fa fa-remove'></i></button>
			Nama Facebook Wajib di isi!
			</div>";
	}
	if (empty($uplink)) {
	$error .= "<div class='alert alert-dismissible alert-danger'>
			<button type='button' class='close' data-dismiss='alert'><i class='fa fa-remove'></i></button>
			Email Wajib di isi!
			</div>";
	}
	echo $error;

	if (!$error) {
		echo "<div class='alert alert-dismissible alert-info'>
			<button type='button' class='close' data-dismiss='alert'><i class='fa fa-remove'></i></button>
			Username sukses didaftarkan, silakan login <a href='http://panel.kement.us/login.php'>disini</a>.
			</div>";
	}
}