jQuery(document).ready(function(){
    jQuery('#slideshow').cycle({
        fx:     'shuffle',
        speed:  '1000',
        timeout: 8000,
        pager:  '#slider_nav',
        pagerAnchorBuilder: function(idx, slide) {
            // return sel string for existing anchor
            return '#slider_nav li:eq(' + (idx) + ') a';
        }
    });
});