$.fn.cycle.updateActivePagerLink = function(pager, currSlideIndex) {
    $(pager).find('li').removeClass('activeLI')
        .filter('li:eq('+currSlideIndex+')').addClass('activeLI');
};

$.fn.cycle.updateActivePagerLink = function(pager, currSlide, clsName) {
    $(pager).each(function() {
        console.log(clsName + '; ' + currSlide ); 
        $(this).children().removeClass('activeLI').filter(':eq('+currSlide+')').addClass('activeLI');
    });
};

$(function() {
    $('#slideshow').cycle({
        timeout: 3000,
        pager:  '#nav',
        pagerAnchorBuilder: function(idx, slide) {
            return '<li><a href="<?php echo get_permalink($pid); ?>" title="<?php echo get_the_title($pid); ?>"><img src="' + slide.src + '" width="100" height="59" /></a></li>';
        }
    });
});