$('#feature-main').cycle({ 
    fx:     'scrollDown', 
    speed:  'fast', 
    timeout: 0, 
    pager:  '#feature-nav', 
    pagerAnchorBuilder: function(idx, slide) { 
    // return selector string for existing anchor 
    return '#feature-nav li:eq(' + idx + ') a'; 
    } 
});