$(document).ready(function() {slideShow(4000)});

function slideShow(speed) {
    $('ul.slideshow').append('<li id="slideshow-caption" class="caption"><div class="slideshow-caption-container"><p></p><div class="prevlink">Previous</div><div class="nextlink">Next</div></li>');
    $('ul.slideshow li').css({opacity: 0.0});
    $('ul.slideshow li:first').css({opacity: 1.0});
    $('#slideshow-caption p').html($('ul.slideshow a:first').find('img').attr('alt'));
    $('#slideshow-caption').css({opacity: 0.7, bottom:0});
    var timer = setInterval('gallery()',speed);
    $('ul.slideshow').hover(
        function () {clearInterval(timer)},
        function () {timer = setInterval('gallery()',speed)}
    );
    $('ul.slideshow .prevlink').click(
        function () {gallery_prev()}
    );
    $('ul.slideshow .nextlink').click(
        function () {gallery()}
    );
}

function gallery() {
    var current = ($('ul.slideshow li.show')?  $('ul.slideshow li.show') : $('ul.slideshow li:first'));
    var next = ((current.next().length) ? ((current.next().attr('id') == 'slideshow-caption')? $('ul.slideshow li:first') :current.next()) : $('ul.slideshow li:first'));
    var desc = next.find('img').attr('alt');
    next.css({opacity: 0.0}).addClass('show').animate({opacity: 1.0}, 1000);
    $('#slideshow-caption').animate({bottom:-70}, 300, function () {
            $('#slideshow-caption p').html(desc);
            $('#slideshow-caption').animate({bottom:0}, 500);
    });
    current.animate({opacity: 0.0}, 1000).removeClass('show');  
}

function gallery_prev() {
    var current = ($('ul.slideshow li.show')?  $('ul.slideshow li.show') : $('ul.slideshow li:first'));
    var next = ((current.prev().length) ? current.prev() : false);

    var desc = next.find('img').attr('alt');
    next.css({opacity: 0.0}).addClass('show').animate({opacity: 1.0}, 1000);
    $('#slideshow-caption').animate({bottom:-70}, 300, function () {
            $('#slideshow-caption p').html(desc);
            $('#slideshow-caption').animate({bottom:0}, 500);
    });
    current.animate({opacity: 0.0}, 1000).removeClass('show');  
}