var currentImage;
var currentIndex = -1;
var interval;
function showImage(index) {
    if (index < $('#bigPic img').length) {
        var indexImage = $('#bigPic img')[index]
        if (currentImage) {
            if (currentImage != indexImage) {
                $(currentImage).css('z-index', 2);
                clearTimeout(myTimer);
                $(currentImage).fadeOut(100, function() {
                    myTimer = setTimeout("showNext()", 5000);
                    $(this).css({ 'display': 'none', 'z-index': 1 })
                });
            }
        }
        $(indexImage).css({ 'display': 'block', 'opacity': 1 });
        currentImage = indexImage;
        currentIndex = index;
        $('#thumbs li').removeClass('active');
        $($('#thumbs li')[index]).addClass('active');
    }
}

function showNext() {
    var len = $('#bigPic img').length;
    var next = currentIndex < (len - 1) ? currentIndex + 1 : 0;
    showImage(next);
}

var myTimer;

$(document).ready(function() {
    myTimer = setTimeout("showNext()", 5000);
    showNext(); //loads first image
    $('#thumbs li').bind('click', function(e) {
        var count = $(this).attr('rel');
        showImage(parseInt(count) - 1);
    });
});