var timer;
function slideShow(speed) {
    //Set the opacity of all images to 0
    $('ul.slideshow li').css({ "opacity": "0.0" });
    //Get the first image and display it (set it to full opacity)
    $('ul.slideshow li:first').css({ opacity: 1.0 }).addClass('show');
    //Call the gallery function to run the slideshow   
    timer = setInterval('gallery()', speed);

    //pause the slideshow on mouse over
    $('ul.slideshow').hover(
        function () {
            clearInterval(timer);
        },
        function () {
            timer = setInterval(gallery, speed);
        }
    );
}

function gallery() {

    //if no IMGs have the show class, grab the first image
    var current = ($('ul.slideshow li.show') ? $('ul.slideshow li.show') : $('#ul.slideshow li:first'));

    //Hide the current image
    current.animate({ "opacity": "0.0" }, 1000).removeClass('show');

    //Get next image, if it reached the end of the slideshow, rotate it back to the first image
    var next = ((current.next().length) ? ((current.next().attr('id') == 'slideshow-caption') ? $('ul.slideshow li:first') : current.next()) : $('ul.slideshow li:first'));

    //Set the fade in effect for the next image, show class has higher z-index
    next.css({ opacity: 0.0 }).addClass('show').animate({ opacity: 1.0 }, 1000);

    //Hide the caption first, and then set and display the caption
    $('#slideshow-caption').slideToggle(300, function () {
        $('#slideshow-caption h3').html(title);
        $('#slideshow-caption p').html(desc);
        $('#slideshow-caption').slideToggle(500);
    });
}

function next() {

    //if no IMGs have the show class, grab the first image
    var current = ($('ul.slideshow li.show') ? $('ul.slideshow li.show') : $('#ul.slideshow li:first'));

    //Get next image, if it reached the end of the slideshow, rotate it back to the first image
    var next = ((current.next().length) ? ((current.next().attr('id') == 'slideshow-caption') ? $('ul.slideshow li:first') : current.next()) : $('ul.slideshow li:first'));

    //johnny
    //var prev = ((current.prev().length) ? ((current.prev().attr('id') == 'slideshow-caption') ? $('ul.slideshow li:first') : current.prev()) : $('ul.slideshow li:first'));

    //Get next image caption
    var title = next.find('img').attr('title');
    var desc = next.find('img').attr('alt');

    //Set the fade in effect for the next image, show class has higher z-index
    next.css({ opacity: 0.0 }).addClass('show').animate({ opacity: 1.0 }, 1000);

    //Hide the caption first, and then set and display the caption
    $('#slideshow-caption').slideToggle(300, function () {
        $('#slideshow-caption h3').html(title);
        $('#slideshow-caption p').html(desc);
        $('#slideshow-caption').slideToggle(500);
    });

    //Hide the current image
    current.animate({ opacity: 0.0 }, 1000).removeClass('show');
    clearInterval(timer);
    timer = setInterval('gallery()', 6000);
}

//prev
function prev() {

    //if no IMGs have the show class, grab the first image
    var current = ($('ul.slideshow li.show') ? $('ul.slideshow li.show') : $('#ul.slideshow li:first'));

    //Get next image, if it reached the end of the slideshow, rotate it back to the first image
    var next = ((current.prev().length) ?
        ((current.prev().attr('id') == 'slideshow-caption') ? 
        $('ul.slideshow li:first') : current.prev()) : $('ul.slideshow li:first'));

    //Get next image caption
    var title = next.find('img').attr('title');
    var desc = next.find('img').attr('alt');

    //Set the fade in effect for the next image, show class has higher z-index
    next.css({ opacity: 0.0 }).addClass('show').animate({ opacity: 1.0 }, 1000);

    //Hide the caption first, and then set and display the caption
    $('#slideshow-caption').slideToggle(300, function () {
        $('#slideshow-caption h3').html(title);
        $('#slideshow-caption p').html(desc);
        $('#slideshow-caption').slideToggle(500);
    });

    //Hide the current image
    current.animate({ opacity: 0.0 }, 1000).removeClass('show');
    clearInterval(timer);
    timer = setInterval('gallery()', 6000);
}