/**
 * @author byang
 */
        $.fn.infiniteCarousel = function(){
        
            function repeat(str, num){
                return new Array(num + 1).join(str);
            }
            
            return this.each(function(){
                var $wrapper = $('> div', this).css('overflow', 'hidden'), $slider = $wrapper.find('> ul'), $items = $slider.find('> li'), $single = $items.filter(':first'), singleWidth = $single.outerWidth(), visible = Math.ceil($wrapper.innerWidth() / singleWidth), // note: doesn't include padding or border
         currentPage = 1, pages = Math.ceil($items.length / visible);
                
                
                // 1. Pad so that 'visible' number will always be seen, otherwise create empty items
                if (($items.length % visible) != 0) {
                    $slider.append(repeat('<li class="empty" />', visible - ($items.length % visible)));
                    $items = $slider.find('> li');
                }
                
                // 2. Top and tail the list with 'visible' number of items, top has the last section, and tail has the first
                $items.filter(':first').before($items.slice(-visible).clone().addClass('cloned'));
                $items.filter(':last').after($items.slice(0, visible).clone().addClass('cloned'));
                $items = $slider.find('> li'); // reselect
                // 3. Set the left position to the first 'real' item
                $wrapper.scrollLeft(singleWidth * visible);
                
                // 4. paging function
                $('a.a').addClass('selected');
                function gotoPage(page){
                    var dir = page < currentPage ? -1 : 1, n = Math.abs(currentPage - page), left = singleWidth * dir * visible * n;
                    
                    $wrapper.filter(':not(:animated)').animate({
                        scrollLeft: '+=' + left
                    }, 350, function(){
                        if (page == 0) {
                            $wrapper.scrollLeft(singleWidth * visible * pages);
                            page = pages;
                        }
                        else 
                            if (page > pages) {
                                $wrapper.scrollLeft(singleWidth * visible);
                                // reset back to start position
                                page = 1;
                            }
                        
                        currentPage = page;
                        //console.info(currentPage);    
                        if (currentPage == 1) {
                            $('a').removeClass('selected');
                            $('a.a').addClass('selected');
                        }
                        if (currentPage == 2) {
                            $('a').removeClass('selected');
                            $('a.b').addClass('selected');
                        }
                        if (currentPage == 3) {
                            $('a').removeClass('selected');
                            $('a.c').addClass('selected');
                        }
                        
                    });
                    
                    return false;
                }
                
                
                
                
                $wrapper.after('<a class="arrow back">&lt;</a><a class="arrow forward">&gt;</a>');
                
                // 5. Bind to the forward and back buttons
                $('a.back', this).click(function(){
                    return gotoPage(currentPage - 1);
                });
                
                $('a.forward', this).click(function(){
                    return gotoPage(currentPage + 1);
                });
                
                
                // create a public interface to move to a specific page
                $(this).bind('goto', function(event, page){
                    gotoPage(page);
                });
                
                
                $('.jump_to_page>a').click(function(){
                    return false;
                });
                
                $('.a').click(function(){
                    gotoPage(1);
                });
                $('.b').click(function(){
                    gotoPage(2);
                });
                $('.c').click(function(){
                    gotoPage(3);
                });
                
            });
        };