源码如下：

<style type="text/css">*{margin:0;padding:0;}body{height:2000px;}.floatAd{width:124px;height:299px; text-align:center; position:fixed;margin-left:0;top:109px; _position:absolute; background:url(//img.jbzj.com/demoimg/2014/bg_slide2_120_270.png) no-repeat;}.floatAd a{display:block;}.floatAd img{border:none;}.floatAd .closeAd{width:50px; height:20px; display:block; cursor:pointer;margin:9px 0 0 auto;}.flAd{left:0;}.frAd{right:0;}</style><div class="floatAd flAd"><a href="#" target="_blank"><img src="#" width="120" height="270" alt="第1张图"></a><span class="closeAd"></span></div><div class="floatAd frAd"><a href="#" target="_blank"><img src="#" width="120" height="270" alt="第2张图"></a><span class="closeAd"></span></div><script type="text/javascript">$(".closeAd").click(function(){ $(this).parent(".floatAd").hide();})function scrollAd(obj) { var obj = "." + obj; var adTop = $(".floatAd").offset().top; //alert(adTop); $(window).scroll(function () { $(".floatAd").css({ top : $(window).scrollTop() + adTop }) })}$(function () { //针对ie6，模拟position:fixed效果 if ($.browser.msie && parseInt($.browser.version) == 6) { scrollAd("floatAd"); }})</script>

我们还可以改下代码，实现“单边展示飘浮广告，多个广告轮播展示”的效果，更改后的源代码：

<style type="text/css">*{margin:0;padding:0;}body{height:2000px;}.floatAd{width:124px;height:299px; text-align:center; position:fixed;margin-left:0;top:109px;right:0; _position:absolute; background:url(//img.jbzj.com/demoimg/2014/bg_slide2_120_270.png) no-repeat;}.floatAd a{display:block;}.floatAd img{border:none;}.floatAd .closeAd{width:50px; height:20px; display:block; cursor:pointer;margin:9px 0 0 auto;}</style><div class="floatAd"><a href="#" target="_blank"><img src="#" width="120" height="270" alt="第3张图"></a><a href="#" target="_blank" style="display:none;"><img src="#" width="120" height="270" alt="第4张图"></a><span class="closeAd"></span></div><script type="text/javascript">$(".closeAd").click(function(){ $(".floatAd").hide();})function changePic(obj,times){ var num=0, obj =$("." + obj+" >a"), times=times*1000, len=obj.length; //alert(len); setInterval(function(){ num++; num=num>len-1?0:num;//console.log(num); $(obj).eq(num).show().siblings("a").hide(); },times) }function scrollAd(obj) { var obj = "." + obj; var adTop = $(".floatAd").offset().top; //alert(adTop); $(window).scroll(function () { $(".floatAd").css({ top : $(window).scrollTop() + adTop }) })}$(function () { //针对ie6，模拟position:fixed效果 if ($.browser.msie && parseInt($.browser.version) == 6) { scrollAd("floatAd"); } //执行定时切换图片广告 changePic("floatAd",2);//每隔2秒切换一次广告图片展示，间隔时间可控})</script>