这是一款以海贼王为题材的另类手风琴效果，用到三张背景图片，请顺着代码自已下载吧，多看看类似特效的编写思路，对于提高你的Js编程水平有不少帮助的。
运行效果截图如下：
在线演示地址如下：
具体代码如下：
<!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=utf-8" /> <title>海贼王</title> <style type="text/css"> body{margin:0px;padding:0px;overflow:hidden;background:#151515;} #box{width:710px;height:350px;padding:2px 0 2px 2px;margin:210px auto;background:#111;} #box ul{margin:0px;padding:0px;float:left;} #box li{width:75px;height:350px;float:left;display:inline;margin-right:2px;overflow:hidden;list-style-type:none;position:relative;} .pos1, .pos2, .pos3, .pos4, .pos5{width:75px;height:350px;float:left;text-decoration:none;} .pos1 span, .pos2 span, .pos3 span, .pos4 span, .pos5 span{width:75px;height:350px;float:left;top:0px;left:0px;filter:alpha(opacity=10);opacity:0.1;overflow:hidden;position:absolute; text-decoration:none;} .pos1 span.preview{background:url(images/bw.jpg) no-repeat;} .pos1 span.img_pre{left:75px;background:url(images/color.jpg) no-repeat;} .pos2 span.preview{background:url(images/bw.jpg) no-repeat -75px 0;} .pos2 span.img_pre{left:75px;background:url(images/color.jpg) no-repeat -75px 0;} .pos3 span.preview{background:url(images/bw.jpg) no-repeat -152px 0;} .pos3 span.img_pre{left:75px;filter:alpha(opacity=100);opacity:1;background:url(images/color.jpg) no-repeat -152px 0;} .pos4 span.preview{background:url(images/bw.jpg) no-repeat -228px 0;} .pos4 span.img_pre{left:75px;background:url(images/color.jpg) no-repeat -228px 0;} .pos5 span.preview{background:url(images/bw.jpg) no-repeat -303px 0;} .pos5 span.img_pre{left:75px;background:url(images/color.jpg) no-repeat -303px 0;} .inner {width:280px;height:310px;float:left;padding:20px;background:#fff;overflow:hidden;border-right:5px solid #f0f0f0; position:absolute;top:0px;left:75px;} .inner h2{width:280px;height:60px;float:left;color:#555555;font-family:"微软雅黑";line-height:60px;font-size:18px;text-indent:10px;margin:0px;padding:0px;background:url(images/stripe_light.gif);} .inner h3{width:280px;height:40px;float:left;color:#fff;font-family:"微软雅黑";line-height:40px;font-size:14px;text-indent:10px;margin:0px;padding:0px;background:url(images/stripe.gif);} .inner p{width:260px;height:200px;float:left;color:#000;font-family:"微软雅黑";line-height:25px;font-size:12px;margin:0px;padding:0px 10px;} </style> <script type="text/javascript"> window.onload = function(){ var oBox = document.getElementById('box'); var aLi = oBox.getElementsByTagName('li'); var aA = oBox.getElementsByTagName('a'); var aPrev = getClass(oBox, 'preview'); var aImg = getClass(oBox, 'img_pre'); var i = 0; for(i=0;i<aA.length;i++){ aA[i].index = i; aA[i].onclick = function(){ for(i=0;i<aLi.length;i++){ if(aLi[this.index].style.width != '400px')startMove(aLi[i], {width:75}, 5); startMove(aPrev[i], {opacity:10}, 5); startMove(aImg[i], {opacity:0, left:75}, 5); } if(aLi[this.index].style.width != '400px'){ startMove(oBox, {width:710}, 5); startMove(aImg[this.index], {opacity:100, left:0}, 5); startMove(aLi[this.index], {width:400}, 5); }else{ startMove(aLi[this.index], {width:75}, 5); for(i=0;i<aLi.length;i++){ startMove(aPrev[i], {opacity:100}, 5); } startMove(oBox, {width:385}, 5); } }; } }; function getClass(oParent, sClass){ var aElem = oParent.getElementsByTagName('*'); var aClass = []; var i = 0; for(i=0;i<aElem.length;i++)if(aElem[i].className == sClass)aClass.push(aElem[i]); return aClass; } function startMove(obj, json, iT, fnEnd){ if(obj.timer)clearInterval(obj.timer); obj.timer = setInterval(function (){ doMove(obj, json, iT, fnEnd); }, 30); } function getStyle(obj, attr){ return obj.currentStyle ? obj.currentStyle[attr] : getComputedStyle(obj, false)[attr]; } function doMove(obj, json, iT, fnEnd){ var iCur = 0; var attr = ''; var bStop = true; for(attr in json){ attr == 'opacity' ? iCur = parseInt(100*parseFloat(getStyle(obj, 'opacity'))) : iCur = parseInt(getStyle(obj, attr)); if(isNaN(iCur))iCur = 0; var iSpeed = (json[attr]-iCur) / iT; iSpeed = iSpeed > 0 ? Math.ceil(iSpeed) : Math.floor(iSpeed); if(parseInt(json[attr])!=iCur)bStop = false; if(attr=='opacity'){ obj.style.filter = "alpha(opacity:"+(iCur+iSpeed)+")"; obj.style.opacity = (iCur + iSpeed) / 100; }else{ attr == 'zIndex' ? obj.style[attr] = iCur + iSpeed : obj.style[attr] = iCur + iSpeed +'px'; } } if(bStop){ clearInterval(obj.timer); obj.timer = null; if(fnEnd)fnEnd(); } } </script> </head> <body> <div> <li> <a href="javascript:;"> <span></span> <span></span> </a> <div> <h2>乌索普</h2> <h3>草帽海贼团【狙击手】</h3> <p>悬赏：3000万（司法岛事件）</p> </div> </li> <li> <a href="javascript:;"> <span></span> <span></span> </a> <div> <h2>罗罗诺亚·索隆</h2> <h3>草帽海贼团【剑士】</h3> <p>悬赏：6千万（阿拉巴斯坦事件）→1亿2000万（司法岛事件）</p> </div> </li> <li> <a href="javascript:;"> <span></span> <span></span> </a> <div> <h2>蒙其·D·路飞</h2> <h3>草帽海贼团【船长】</h3> <p>恶魔果实：橡胶果实<br />悬赏：3千万（可可亚西村事件）→1亿（阿拉巴斯坦事件）→3亿（司法岛事件)→4亿（顶上战争后）</p> </div> </li> <li> <a href="javascript:;"> <span></span> <span></span> </a> <div> <h2>娜美</h2> <h3>草帽海贼团【航海士】</h3> <p>悬赏：1600万（司法岛事件）</p> </div> </li> <li> <a href="javascript:;"> <span></span> <span></span> </a> <div> <h2>香吉士</h2> <h3>草帽海贼团【厨师】</h3> <p>悬赏：7700万（司法岛事件）</p> </div> </li> </div> </body> </html>