//Change: 04/11/10 17:48
(function ($) {
    $.fn.infiniteCarousel = function () {
        function repeat(str, n) {
            return new Array( n + 1 ).join(str);
        }
        
        return this.each(function () {
            var $wrapper = $('> div', this).css('overflow', 'hidden'),
                $slider = $wrapper.find('> ul').width(9999),
                $items = $slider.find('> li'),
                $original_items = $items,
                $single = $items.filter(':first')
                singleWidth = $single.outerWidth(),
                visible = Math.ceil($wrapper.innerWidth() / singleWidth),
                currentPage = 1,
                pages = Math.ceil($items.length / visible);
                $paginatorCounter = 0,
                $paginatorHTML = "";
            
            // 1. pad the pages with empty element if required
            if ($items.length % visible != 0) {
                $slider.append(repeat('<li class="empty" />', visible - ($items.length % visible)));
                $items = $slider.find('> li');
            }
            
            // 2. create the carousel padding on left and right (cloned)
            $items.filter(':first').before($items.slice(-visible).clone().addClass('cloned'));
            $items.filter(':last').after($items.slice(0, visible).clone().addClass('cloned'));
            $items = $slider.find('> li');
            
            // 3. reset scroll
            $wrapper.scrollLeft(singleWidth * visible);
            
            // 4. paging function
            function gotoPage(page) {
		var isBullet = false;
                if(typeof(page) == "string"){
		    sustr = page.substring(page.length-1, page.length);
                    page = parseInt(sustr);
		    for(i = 1; i <= paginatorCounter; i++){
			if($('#paginator_page_'+i).hasClass('pagination_current_page')){
				$('#paginator_page_'+i).removeClass('pagination_current_page');
			}
		    }
		    $('#paginator_page_'+page).addClass('pagination_current_page');
		    isBullet = true;
                }

                var dir = page < currentPage ? -1 : 1,
                    n = Math.abs(currentPage - page),
                    left = singleWidth * dir * visible * n;
                
                $wrapper.filter(':not(:animated)').animate({
                    scrollLeft : '+=' + left
                }, 500, function () {
                    // if page == last page - then reset position
                    if (page > pages) {
                        $wrapper.scrollLeft(singleWidth * visible);
                        page = 1;
                    } else if (page == 0) {
                        page = pages;
                        $wrapper.scrollLeft(singleWidth * visible * pages);
                    }
                    
                    currentPage = page;
                });

		if(!isBullet){
			if($('#paginator_page_'+currentPage).hasClass('pagination_current_page')){
			    $('#paginator_page_'+currentPage).removeClass('pagination_current_page');
			}

			if( (currentPage == paginatorCounter) && (page > paginatorCounter) ){
			    $('#paginator_page_'+1).addClass('pagination_current_page');
			}else if((currentPage == paginatorCounter) && (page == paginatorCounter) ){
			    $('#paginator_page_'+(paginatorCounter)).addClass('pagination_current_page');
			}
		
			if(page == 0 ){
			    $('#paginator_page_'+(paginatorCounter)).addClass('pagination_current_page');
			}

			if((page < currentPage) && (page > 0)){
			    $('#paginator_page_'+(currentPage-1)).addClass('pagination_current_page');
			}
		
			if((page > currentPage) && (page > 0)){
			    $('#paginator_page_'+(currentPage+1)).addClass('pagination_current_page');
			}
		}

                return false;
            }
            
            // 5. insert the back and forward link
            $wrapper.after('<a href="#" class="arrow back">&lt;</a><a href="#" class="arrow forward">&gt;</a>');
            
            // 6. bind the back and forward links
            $('a.back', this).click(function () {
                gotoPage(currentPage - 1);
                return false;
            });
            
            $('a.forward', this).click(function () {
                gotoPage(currentPage + 1);
                return false;
            });
            
            $(this).bind('goto', function (event, page) {
                gotoPage(page);
            });
            
            // Magic for the auto pagination :-)
            $(this).bind('next', function () {
                gotoPage(currentPage + 1);
            });
            
            // 7. Create paginator
            $paginatorHTML += '<div id="paginator">';
            $original_items.each(function () {
                $paginatorCounter++;
                $paginatorHTML += '<a class="paginator page_'+$paginatorCounter+'" id="paginator_page_'+$paginatorCounter+'">'+$paginatorCounter+'</a> ';
            });
            $paginatorHTML += '</div>';
            $wrapper.after($paginatorHTML);
	    $('#paginator_page_'+1).addClass('pagination_current_page');
            
            // 8. Bind the paginator actions
            for(paginatorCounter = 0; paginatorCounter < $original_items.length; paginatorCounter++){
                $('a.page_'+(paginatorCounter+1), this).click(function () {
                    return gotoPage($(this).attr("id"));
                });
            }
            
        });
    };
})(jQuery);