ci框架的轮播图

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN"        "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en"><head>    <meta http-equiv="Content-Type" content="text/html;charset=UTF-8">    <title>轮播图</title>    <script src="<?php echo base_url('Public').'/';?>jquery-1.9.1.min.js"></script>    <style type="text/css">        * {            padding: 0px;            margin: 0px;        }        a {            text-decoration: none;        }        ul {            list-style: outside none none;        }        .slider, .slider-panel img, .slider-extra {            width: 650px;            height: 413px;        }        .slider {            text-align: center;            margin: 30px auto;            position: relative;        }        .slider-panel, .slider-nav, .slider-pre, .slider-next {            position: absolute;            z-index: 8;        }        .slider-panel {            position: absolute;        }        .slider-panel img {            border: none;        }        .slider-extra {            position: relative;        }        .slider-nav {            margin-left: -51px;            position: absolute;            left: 50%;            bottom: 4px;        }        .slider-nav li {            background: #3e3e3e;            border-radius: 50%;            color: #fff;            cursor: pointer;            margin: 0 2px;            overflow: hidden;            text-align: center;            display: inline-block;            height: 18px;            line-height: 18px;            width: 18px;        }        .slider-nav .slider-item-selected {            background: blue;        }        .slider-page a{            background: rgba(0, 0, 0, 0.2);            filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#33000000,endColorstr=#33000000);            color: #fff;            text-align: center;            display: block;            font-family: "simsun";            font-size: 22px;            width: 28px;            height: 62px;            line-height: 62px;            margin-top: -31px;            position: absolute;            top: 50%;        }        .slider-page a:HOVER {            background: rgba(0, 0, 0, 0.4);            filter: progid:DXImageTransform.Microsoft.gradient(startColorstr=#66000000,endColorstr=#66000000);        }        .slider-next {            left: 100%;            margin-left: -28px;        }    </style></head><body><div class="slider">    <ul class="slider-main">        <?php foreach($file as $item => $value):?>            <li class="slider-panel">                <a href="http://www.jb51.net" target="_blank"> <img src="<?php echo base_url('Public').'/';?><?php echo $value['img_log'];?>" alt="" width="800px;" height="500px;"/></a>            </li>        <?php endforeach; ?>    </ul>    <div class="slider-extra">        <ul class="slider-nav">            <li class="slider-item">1</li>            <li class="slider-item">2</li>            <li class="slider-item">3</li>            <li class="slider-item">4</li>            <li class="slider-item">5</li>        </ul>        <div class="slider-page">            <a class="slider-pre" href="javascript:;;"><</a>            <a class="slider-next" href="javascript:;;">></a>        </div>    </div></div></body></html><script type="text/javascript">    $(document).ready(function() {        $.ajax({            type: "POST",            url: "<?php echo site_url('Index/img_time')?>",            data: null,//            dateType:"json",            success: function(msg){               t=msg ;//轮播时间间隔            }        });       t=3000s;//轮播时间间隔
        var length, currentIndex = 0, interval, hasStarted = false, //是否已经开始轮播        length = $('.slider-panel').length;        //将除了第一张图片隐藏        $('.slider-panel:not(:first)').hide();        //将第一个slider-item设为激活状态        $('.slider-item:first').addClass('slider-item-selected');        //隐藏向前、向后翻按钮        $('.slider-page').hide();        //鼠标上悬时显示向前、向后翻按钮,停止滑动，鼠标离开时隐藏向前、向后翻按钮，开始滑动        $('.slider-panel, .slider-pre, .slider-next').hover(function() {            stop();            $('.slider-page').show();        }, function() {            $('.slider-page').hide();            start();        });        $('.slider-item').hover(function(e) {            stop();            var preIndex = $(".slider-item").filter(".slider-item-selected").index();            currentIndex = $(this).index();            play(preIndex, currentIndex);        }, function() {            start();        });        $('.slider-pre').unbind('click');        $('.slider-pre').bind('click', function() {            pre();        });        $('.slider-next').unbind('click');        $('.slider-next').bind('click', function() {            next();        });        /**         * 向前翻页         */        function pre() {            var preIndex = currentIndex;            currentIndex = (--currentIndex + length) % length;            play(preIndex, currentIndex);        }        /**         * 向后翻页         */        function next() {            var preIndex = currentIndex;            currentIndex = ++currentIndex % length;            play(preIndex, currentIndex);        }        /**         * 从preIndex页翻到currentIndex页         * preIndex 整数，翻页的起始页         * currentIndex 整数，翻到的那页         */        function play(preIndex, currentIndex) {            $('.slider-panel').eq(preIndex).fadeOut(500)                    .parent().children().eq(currentIndex).fadeIn(1000);            $('.slider-item').removeClass('slider-item-selected');            $('.slider-item').eq(currentIndex).addClass('slider-item-selected');        }        /**         * 开始轮播         */        function start() {            if(!hasStarted) {                hasStarted = true;                interval = setInterval(next, t);            }        }        /**         * 停止轮播         */        function stop() {            clearInterval(interval);            hasStarted = false;        }        //开始轮播        start();    });</script>
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