(function () {
    $j.fn.infiniteCarousel = function () {
        function repeat(str, n) {
            return new Array( n + 1 ).join(str);
        }
        
        return this.each(function () {
            // magic!
            var $jwrapper = $j('> div', this).css('overflow', 'hidden'),
                $jslider = $jwrapper.find('> ul').width(9999),
                $jitems = $jslider.find('> li'),
                $jsingle = $jitems.filter(':first')
                
                singleWidth = $jsingle.outerWidth(),
                visible = Math.ceil($jwrapper.innerWidth() / singleWidth),
                currentPage = 1,
                pages = Math.ceil($jitems.length / visible);
                
            /* TASKS */
            
            // 1. pad the pages with empty element if required
            if ($jitems.length % visible != 0) {
                // pad
                $jslider.append(repeat('<li class="empty" />', visible - ($jitems.length % visible)));
                $jitems = $jslider.find('> li');
            }
            
            // 2. create the carousel padding on left and right (cloned)
            $jitems.filter(':first').before($jitems.slice(-visible).clone().addClass('cloned'));
            $jitems.filter(':last').after($jitems.slice(0, visible).clone().addClass('cloned'));
            $jitems = $jslider.find('> li');
            
            // 3. reset scroll
            $jwrapper.scrollLeft(singleWidth * visible);
            
            // 4. paging function
            function gotoPage(page) {
                var dir = page < currentPage ? -1 : 1,
                    n = Math.abs(currentPage - page),
                    left = singleWidth * dir * visible * n;
                
                $jwrapper.filter(':not(:animated)').animate({
                    scrollLeft : '+=' + left
                }, 500, function () {
                    // if page == last page - then reset position
                    if (page > pages) {
                        $jwrapper.scrollLeft(singleWidth * visible);
                        page = 1;
                    } else if (page == 0) {
                        page = pages;
                        $jwrapper.scrollLeft(singleWidth * visible * pages);
                    }
                    
                    currentPage = page;
                });
            }
            
            // 5. insert the back and forward link
            $jwrapper.after('<a href="#" class="arrow back">&lt;</a><a href="#" class="arrow forward">&gt;</a>');
            
            // 6. bind the back and forward links
            $j('a.back', this).click(function () {
                gotoPage(currentPage - 1);
                return false;
            });
            
            $j('a.forward', this).click(function () {
                gotoPage(currentPage + 1);
                return false;
            });
            
            $j(this).bind('goto', function (event, page) {
                gotoPage(page);
            });
            
            // THIS IS NEW CODE FOR THE AUTOMATIC INFINITE CAROUSEL
            $j(this).bind('next', function () {
                gotoPage(currentPage + 1);
            });
        });
    };
})(jQuery);