对联广告代码HTMl教程：实现网页左右两侧居中的对联广告代码

谁知道网站上对联广告代码如何制作！

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可关闭的浮动对联广告js代码

<SCRIPT language=JavaScript> var delta=0.15 var collection; function floaters() { this.items = []; this.addItem = function(id,x,y,content) { document.write('<DIV id='+id+' style="Z-INDEX: 10; POSITION: absolute; width:80px; height:60px;left:'+(typeof(x)=='string'?eval(x):x)+':'+(typeof(y)=='string'?eval(y):y)+'">'+content+'</DIV>'); var newItem = {}; newItem.object = document.getElementById(id); newItem.x = x; newItem.y = y; this.items[this.items.length] = newItem; } this.play = function() { collection = this.items setInterval('play()',10); } } function play() { for(var i=0;i<collection.length;i++) { var followObj = collection[i].object; var followObj_x = (typeof(collection[i].x)=='string'?eval(collection[i].x):collection[i].x); var followObj_y = (typeof(collection[i].y)=='string'?eval(collection[i].y):collection[i].y); if(followObj.offsetLeft!=(document.body.scrollLeft+followObj_x)) { var dx=(document.body.scrollLeft+followObj_x-followObj.offsetLeft)*delta; dx=(dx>0?1:-1)*Math.ceil(Math.abs(dx)); followObj.style.left=followObj.offsetLeft+dx; } if(followObj.offsetTop!=(document.body.scrollTop+followObj_y)) { var dy=(document.body.scrollTop+followObj_y-followObj.offsetTop)*delta; dy=(dy>0?1:-1)*Math.ceil(Math.abs(dy)); =followObj.offsetTop+dy; } followObj.style.display = ''; } } function closeAd1(){ followDiv1.style.visibility='hidden';} function closeAd2(){ followDiv2.style.visibility='hidden';} var theFloaters = new floaters(); theFloaters.addItem('followDiv1','document.body.clientWidth-110',100,'<iframe src="/right.asp" frameborder=0 scrolling="no" marginheight="0" marginwidth="0" width="100" height="230" align="middle"></iframe><br>- <a href=javascript:closeAd1()>关闭</a> -'); theFloaters.addItem('followDiv2',8,100,'<iframe src="/lianxi.asp" frameborder=0 scrolling="no" marginheight="0" marginwidth="0" width="100" height="230" align="middle"></iframe><br>- <a href=javascript:closeAd2()>关闭</a> -'); theFloaters.play(); </SCRIPT>

HTMl教程：实现网页左右两侧居中的对联广告代码

<!DOCTYPE html> <html lang="en"> <head> <meta charset="UTF-8"> <title>Document</title> <style> *{margin: 0;padding: 0;} .Ad{ position: fixed; width: 140px; height: 500px; background: #db3e52 ; top: -moz-calc(50% - 250px); top: -webkit-calc(50% - 250px); top: calc(50% - 250px); } div.Ad:nth-child(1){ left: 2%; } div.Ad:nth-child(2){ right:2%; } </style> </head> <body> <div class="Ad"></div> <div class="Ad"></div> </body> </html>