右下角浮动广告效果

<script> document.write ('<div id="aa" style="width:200px;height:200px;background:#c0c0c0;" >'+'  <span style="text-decoration:none;font-size:12px;">关注xxx公众账号</span>     '+'<a href="javascript:;" onclick="hidead()" style="color:red;font-size:12px;text-align: right;">关闭</a>'+'<img src="${ctx}/images/weixin.jpg" width="200" height="190" border="0" alt="">'+'  <span style="text-decoration:none;font-size:12px;">关注xxx公众账号</span>     '+'</div> ');function scrollx(p){ var d = document,dd = d.documentElement,db = d.body,w = window,o = d.getElementById(p.id),ie6 = /msie 6/i.test(navigator.userAgent),style,timer; if(o){ o.style.cssText +=";position:"+(p.f&&!ie6?'fixed':'absolute')+";"+(p.l==undefined?'right:0;':'left:'+p.l+'px;')+(p.t!=undefined?'top:'+p.t+'px':'bottom:0'); if(p.f&&ie6){ o.style.cssText +=';left:expression(documentElement.scrollLeft + '+(p.l==undefined?dd.clientWidth-o.offsetWidth:p.l)+' + "px");top:expression(documentElement.scrollTop +'+(p.t==undefined?dd.clientHeight-o.offsetHeight:p.t)+'+ "px" );'; dd.style.cssText +=';background-image: url(about:blank);background-attachment:fixed;'; }else{ if(!p.f){ w.onresize = w.onscroll = function(){ clearInterval(timer); timer = setInterval(function(){ //双选择为了修复chrome 下xhtml解析时dd.scrollTop为 0 var st = (dd.scrollTop||db.scrollTop),c; c = st - o.offsetTop + (p.t!=undefined?p.t:(w.innerHeight||dd.clientHeight)-o.offsetHeight); if(c!=0){ o.style.top = o.offsetTop + Math.ceil(Math.abs(c)/10)*(c<0?-1:1) + 'px'; }else{ clearInterval(timer); } },10) } } } } } scrollx({ id:'aa' }) scrollx({ id:'bb', l:0, t:200, f:1 }) /* id 你要滚动的内容的id l 横坐标的位置 不写为紧贴右边 t 你要放在页面的那个位置默认是贴着底边 0是贴着顶边 f 1表示固定 不写或者0表示滚动 */ function hidead(){document.getElementById("aa").style.display="none";}</script>