Image thumbnails slider

I found the solution with cycle.js

header.php

<script type="text/javascript" src="http://cloud.github.com/downloads/malsup/cycle/jquery.cycle.all.latest.js"></script>
    <script type="text/javascript">
    $(document).ready(function() {  
        $('.slideshow').cycle({
        fx: 'fade',
        pause: 1,
        prev: '#prev',
        next: '#next'
        });
    });
    </script>

single-photos.php

<div id="slideshowContainer">
<div class="slideshow"> <?php the_content (); ?> </div>
<ul id="nav">
  <li id="prev"><a href="#"></a></li>
  <li id="next"><a href="#"></a></li>
</ul>
</div>