function encryptSimple($data) {
		$result = '';
		for($i=0; $i<strlen($data); $i++) {
			$char = substr($data, $i, 1);
			$keychar = substr($this->encPassword, ($i % strlen($this->encPassword))-1, 1);
			$char = chr(ord($char)+ord($keychar));
			$result.=$char;
		}
		return str_replace(array('+', '/'), array('-', '_'),base64_encode($result));
	}