
<script type="text/javascript">
window.addEvent('domready', function() {
if (document.getElementById('slideshow') !=null){
var item_start = 1;
var item_total = document.getElementById('slideshow_content').getElementsByTagName("li").length;
if (!(item_total > 5)){ // hide the buttons
$('slideshow_previous').setStyle('display', 'none')
$('slideshow_next').setStyle('display', 'none')
}
  
var scroll = new Fx.Scroll('slideshow', {
 wait: false,
 duration: 500,
 transition: Fx.Transitions.Quad.easeInOut
});

$('slideshow_next').addEvent('click', function(event) {
 event = new Event(event).stop();
 if (item_start + 5 <= item_total) {
 item_start++;
 scroll.toElement('si' + item_start);
 }
});

$('slideshow_previous').addEvent('click', function(event) {
 event = new Event(event).stop();
 if (item_start > 1) {
 item_start--;
 scroll.toElement('si' + item_start);
 }
});

}});
</script>
