随页面滚动的对联广告
<html>
<head>
<title>随页面滚动的对联广告</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
</head>
<body>
<center><h1>随页面滚动的对联广告</h1><hr></center>
<p> </p><p> </p><p> </p><p> </p>
<p> </p><p> </p><p> </p><p>
<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<div>
document.write('<DIV id='+id);
document.write(' style="Z-INDEX: 10; POSITION: absolute;width:80px; height:60px;');
document.write('left:'+(typeof(x)=='string'?eval(x):x));
document.write(';top:'+(typeof(y)=='string'?eval(y):y)+'">');
document.write(content+'</DIV>');
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;i<collection.length;i++){ //设置显隐属性
collection[i].object.style.display= 'none';
}
return;
}
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);
//设置左边位置
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;
}
//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,'<img src="1416433.gif" alt="广告内容二"><br><br><img src=u=345967603,2231543872&fm=0&gp=0.gif onClick="closeBanner();">');
theFloaters.addItem('followDiv2',6,80,'<img src="u=770972404,4131089670&fm=0&gp=0.gif" alt="广告内容一"><br><br><img src=u=345967603,2231543872&fm=0&gp=0.gif onClick="closeBanner();">');///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++)
{
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