js 左右悬浮对联广告代码示例

一段js 左右悬浮广告代码，只要修改广告图片地址与连接地址，相应参数根据页面调整下就可以使用这段左右悬浮广告代码了

代码：

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)+';top:'+(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.style.top=followobj.offsettop+dy;
   }
  followobj.style.display = '';
  }
 } 
 
 var thefloaters = new floaters();
 thefloaters.additem('followdiv1','document.body.clientwidth-112',230,'<a href=左链接地址 target=_blank><img src=左图片地址 border=0></a>');
 thefloaters.additem('followdiv2',12,230,'<a href=右链接地址 target=_blank><img src=右图片地址 border=0></a>');
 thefloaters.play();

另存为*.js文件，在页面中引用：<script src="*.js"></script>调用即可，*代表你另存的文件名！
注意：修改广告图片地址和连接地址！相应的参数可以根据页面自行调整。