asunto solucionado.
era un problema en el cierre del div del contenedor, osea, el html queda asi
Código:
<body>
<div id="container">
<a class="gallery slidea" href="#nogo"><span><img src="1.jpg" alt="Warm to Cold" title="Warm to Cold" /><br />Warm to Cold</span></a>
<a class="gallery slideb" href="#nogo"><span><img src="2.jpg" alt="Wheels" title="Wheels" /><br />Wheels</span></a>
<a class="gallery slidec" href="#nogo"><span><img src="3.jpg" alt="Urban Squirrel" title="Urban Squirrel" /><br />Urban Squirrel</span></a>
<a class="gallery slided" href="#nogo"><span><img src="gal/simonh4.jpg" alt="Mother and Daughter" title="Mother and Daughter" /><br />Mother and Daughter</span></a>
<a class="gallery slidee" href="#nogo"><span><img src="gal/simonh5.jpg" alt="River Junk" title="River Junk" /><br />River Junk</span></a>
<a class="gallery slidef" href="#nogo"><span><img src="gal/simonv1.jpg" alt="Portrait One" title="Portrait One" /><br />Portrait One</span></a>
<a class="gallery slideg" href="#nogo"><span><img src="gal/simonv2.jpg" alt="Portrait Two" title="Portrait Two" /><br />Portrait Two</span></a>
<a class="gallery slideh" href="#nogo"><span><img src="gal/simonv3.jpg" alt="Portrait Three" title="Portrait Three" /><br />Portrait Three</span></a>
<a class="gallery slidei" href="#nogo"><span><img src="gal/simonv4.jpg" alt="Bow and Fiddle rock" title="Bow and Fiddle rock" /><br />Bow and Fiddle rock</span></a>
<a class="gallery slidej" href="#nogo"><span><img src="gal/simonv5.jpg" alt="The Pose" title="The Pose" /><br />The Pose</span></a>
<a class="gallery slidek" href="#nogo"><span><img src="gal/simonv5.jpg" alt="The Pose" title="The Pose" /><br />The Pose</span></a>
<a class="gallery slidel" href="#nogo"><span><img src="gal/simonv5.jpg" alt="The Pose" title="The Pose" /><br />The Pose</span></a>
<a class="gallery slidem" href="#nogo"><span><img src="gal/simonv5.jpg" alt="The Pose" title="The Pose" /><br />The Pose</span></a>
<a class="gallery sliden" href="#nogo"><span><img src="gal/simonv5.jpg" alt="The Pose" title="The Pose" /><br />The Pose</span></a>
<a class="gallery slideo" href="#nogo"><span><img src="gal/simonv5.jpg" alt="The Pose" title="The Pose" /><br />The Pose</span></a>
</div>
</body>
</html>
en lugar del html citado anteriormente