给网站侧栏广告位带关闭按钮，可自行调试下css代码适配自己的网页！
<style>
#right_bottom{width:163px;height:313px;position:fixed;bottom:0;right:18px;left:10%;}
#right_bottom img{width:100%;height:100%;border-radius:5px;}
#right_bottom #fuchuanga{ position: absolute;right: 0px;top: 0; background: rgba(0, 0, 0, 0.48); color: #FFF;font-size: 14px;padding: 5px 16px;text-decoration: none;border-radius: 4px;cursor: pointer;}
#right_bottom span{position: absolute;left: 10px;top: 10;font-size:13px;}
</style>
<div id="right_bottom">
<a rel="nofollow" href="http://shop.8gws.com" target="_blank"><img src="http://bbs.8gws.com/content/templates/htzyw/lib/images/gou.gif"></a><a id="fuchuanga" href="javaScript:void(0)">关闭</a>
</div>
<script>
$("#right_bottom a").on('click',function(){
$("#right_bottom").remove();
});
var time = 60;
var closeAd = setInterval(function(){
if(time==0){
$("#right_bottom").remove();
clearInterval(closeAd);
}
$("#right_bottom span").html(time + " 秒后自动关闭");
time--;
},1000)
</script>
