$(document).ready(function(){
    $('.slideshow').cycle({
        fx:     'fade',
        speed:  'slow',
        timeout: 0,
        pager:  '.slider_nav',
        pagerAnchorBuilder: function(idx, slide) {
            // return sel string for existing anchor
            return '.slider_nav li:eq(' + (idx) + ') a';
        },
        next: '.slider-next',
        prev: '.slider-prev'
    });
});