Encrypt in javascript and decrypt in php

I have the following question about this php code:

<?php
class Encrypter {

    private static $Key = "dublin";

    public static function encrypt ($input) {
        $output = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5(Encrypter::$Key), $input, MCRYPT_MODE_CBC, md5(md5(Encrypter::$Key))));
        return $output;
    }

    public static function decrypt ($input) {
        $output = rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, md5(Encrypter::$Key), base64_decode($input), MCRYPT_MODE_CBC, md5(md5(Encrypter::$Key))), "
<?php
class Encrypter {

    private static $Key = "dublin";

    public static function encrypt ($input) {
        $output = base64_encode(mcrypt_encrypt(MCRYPT_RIJNDAEL_256, md5(Encrypter::$Key), $input, MCRYPT_MODE_CBC, md5(md5(Encrypter::$Key))));
        return $output;
    }

    public static function decrypt ($input) {
        $output = rtrim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, md5(Encrypter::$Key), base64_decode($input), MCRYPT_MODE_CBC, md5(md5(Encrypter::$Key))), "%pre%");
        return $output;
    }

}

$texto = "Soy un ejemplo";

// Encriptamos el texto
$texto_encriptado = Encrypter::encrypt($texto);

// Desencriptamos el texto
$texto_original = Encrypter::decrypt($texto_encriptado);

echo $texto_original;
echo $texto_encriptado;
?>
");
        return $output;
    }

}

$texto = "Soy un ejemplo";

// Encriptamos el texto
$texto_encriptado = Encrypter::encrypt($texto);

// Desencriptamos el texto
$texto_original = Encrypter::decrypt($texto_encriptado);

echo $texto_original;
echo $texto_encriptado;
?>

The code works well, what I want is to use the same function to encrypt in javascript and decrypt using this function in php clear using the same key I hope you understand me.