<!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">
 <head>
 <meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
  <script type="text/javascript" src="js/jquery-1.7.min.js"></script>
 <title>jq控制左右箭頭滾動圖片列表</title>
 <style type="text/css">
    *{ margin:0; padding:0;font-size: 12px;}
    ul{ list-style:none;}
     .slider{ width:760px;border: 1px #708090 solid; padding:10px 20px;height: 130px;margin: 100px auto;position: relative;cursor: pointer;}
     #slider_pic{ width: 630px;margin:0 auto;overflow: hidden;height: 130px;position: relative;}
     .prev,.next{position: absolute;width: 20px;height: 20px;cursor: pointer;top:60px;background-color: #daa520; text-align: center;line-height: 20px;font-weight: bold;color: #fff;}
     .next{right: 20px;}
     .no_click{background-color: #808080;}
     #slider_pic li{float: left;margin-right: 10px;}
     #slider_pic ul{position: absolute;left: 0;}

 </style>
     <script type="text/javascript">
         $(function(){
             var oPic=$('#slider_pic').find('ul');
             var oImg=oPic.find('li');
             var oLen=oImg.length;
             var oLi=oImg.width();
             var prev=$("#prev");
             var next=$("#next");

           oPic.width(oLen*210);//計算總長度
             var iNow=0;
             var iTimer=null;
             prev.click(function(){
                  if(iNow>0){  
                   iNow--;

                  }
                 ClickScroll();
             })
             next.click(function(){
                 if(iNow<oLen-3){ 
                     iNow++
                 }
                 ClickScroll();
             })

             function ClickScroll(){

                 iNow==0? prev.addClass('no_click'): prev.removeClass('no_click');
                 iNow==oLen-3?next.addClass("no_click"):next.removeClass("no_click");

                 oPic.animate({left:-iNow*210})
             }

         })

 
     </script>
 </head>

 <body>
     <div class="slider">
         <span class="prev no_click" id="prev"><<</span>
         <span class="next " id="next">>></span>
       <div id="slider_pic">
         <ul>
            <li><img src="http://images.jb51.net/cnblogs_com/hxh-hua/478335/o_01.jpg" width="200" height="130" /></li>
            <li><img src="http://images.jb51.net/cnblogs_com/hxh-hua/478335/o_02.jpg" width="200" height="130" /></li>
            <li><img src="http://images.jb51.net/cnblogs_com/hxh-hua/478335/o_03.jpg" width="200" height="130" /></li>
            <li><img src="http://images.jb51.net/cnblogs_com/hxh-hua/478335/o_04.jpg" width="200" height="130" /></li>
            <li><img src="http://images.jb51.net/cnblogs_com/hxh-hua/478335/o_05.jpg" width="200" height="130" /></li>

            
          </ul>
       </div>

    </div>
 </body>
 </html>