随页面滚动的对联广告

 
 
 
 
 
 
 

<script language="JavaScript">
 var delta=0.8;
 var collection;
 var closeB=false;
 function floaters()
 {
 this.items= [];
 this.addItem= function(id,x,y,content)
 {    //向页面写入一个

 document.write('
');
 document.write(content+'
');
 var newItem= {};
 //获取元素属性
 newItem.object= document.getElementById(id);
 newItem.x= x;                    //设置横坐标
 newItem.y= y;                    //设置纵坐标
 this.items[this.items.length]= newItem;
 }
 this.play= function()
 {
 collection= this.items;
 setInterval('play()',30);             //调用函数play()
 }
 }
 function play()
 {
 if(screen.width<=800 || closeB)
 {
 for(var i=0;i0?1:-1)*Math.ceil(Math.abs(dx));
 followObj.style.left=followObj.offsetLeft+dx;
 }
 //设置顶部位置
 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= '';
 }
 }
 function closeBanner()                     //函数：关闭
 {
 closeB=true;
 return;
 }
 var theFloaters= new floaters();
 //添加广告图像
 theFloaters.addItem('followDiv1','document.body.clientWidth-206',80,'

');
 theFloaters.addItem('followDiv2',6,80,'

');///在这里改为文字或图片！！！！
 theFloaters.play();
 //页面其他内容显示输出
 for(var i=0;i<120;i++)
 {
 document.write("这里是页面内容！");
 }
 </script>