织梦 图片轮播-改

<div  class="infiniteCarousels" style="float:left;margin-top:5px;"> 
<div style="280px;height:180px;overflow:hidden;">
<ul id='imgscrolls' >
{dede:arclist row=4 orderby=pubdate type='image.' typeid='25' }
<li style="float:left;display:inline;">
<div style="position: relative;  400px; height:145px;color:white;">
<img  src="[field:litpic/]" style="280px;height:180px">
<span style="position:absolute; bottom:-35px; left:0; line-height:1.5; 280px; background-color:rgba(0,0,0,0.5);">[field:title/]</span>
</div>
{/dede:arclist}                   
</li>
</ul>
</div>    
</div>

(function () {
    $.fn.infiniteCarousels = function () {
        function repeat(str, n) {
            return new Array( n + 1 ).join(str);
        }
        
        return this.each(function () {
            // magic!
            var $wrapper = $('> div', this).css('overflow', 'hidden'),
                $slider = $wrapper.find('> ul').width(9999),
                $items = $slider.find('> li'),
                $single = $items.filter(':first')
                
                singleWidth = $single.outerWidth(),
                visible = Math.ceil($wrapper.innerWidth() / singleWidth),
                currentPage = 1,
                pages = Math.ceil($items.length / visible);
                
            /* TASKS */
            
            // 1. pad the pages with empty element if required
            if ($items.length % visible != 0) {
                // pad
                $slider.append(repeat('<li class="empty" />', visible - ($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 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;
                });
            }
            
            // 5. insert the back and forward link
             //$wrapper.after('<a href="#" class="arrow back">1</a><a href="#" class="arrow forward">2</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);
            });
            
            // THIS IS NEW CODE FOR THE AUTOMATIC INFINITE CAROUSEL
            $(this).bind('next', function () {
                gotoPage(currentPage + 1);
            });
        });
    };
})(jQuery);



$(document).ready(function () {
    // THIS IS NEW CODE FOR THE AUTOMATIC INFINITE CAROUSEL
    var autoscrolling = true;
    if($('#imgscrolls > li').length>0)
    {
        $('.infiniteCarousels').infiniteCarousels().mouseover(function () {
            autoscrolling = false;
        }).mouseout(function () {
            autoscrolling = true;
        });
        setInterval(function () {
            if (autoscrolling) {
                $('.infiniteCarousels').trigger('next');
            }
        }, 5000);

    }
    
});