js实现带关闭开关的对联广告：
左右两侧出现各一个flash广告
1、网页文件 index.html
2、js对联广告核心代码：ad-02.js
var delta=0.8;
var collection;
var closeB=false;
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()',30);
}
}
function play()
{
if(screen.width<=800 || closeB)
{
for(var i=0;i<collection.length;i++)
{
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);
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 = '';
}
}
function closeBanner()
{
closeB=true;
return;
}
var theFloaters = new floaters();
theFloaters.addItem('followDiv1','document.body.clientWidth-106',
80,'<object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/
shockwave/cabs/flash/swflash.cab#version=6,0,29,0" width="97"
height="233">
<param name="movie" value="images/ad-02.swf">
<param name="quality" value="high">
<embed src="images/ad-02.swf" quality="high"
pluginspage="http://www.macromedia.com/go/getflashplayer"
type="application/x-shockwave-flash" width="97" height="233"></embed></object>
<img src=images/close.gif onClick="closeBanner();">');
theFloaters.addItem('followDiv2',6,80,'<object
classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000"
codebase="http://download.macromedia.com/pub/shockwave
/cabs/flash/swflash.cab#version=6,0,29,0" width="97"
height="233">
<param name="movie" value="images/ad-02.swf">
<param name="quality" value="high">
<embed src="images/ad-02.swf" quality="high"
pluginspage="http://www.macromedia.com/go/getflashplayer"
type="application/x-shockwave-flash" width="97"
height="233"></embed></object>
<img src=images/close.gif onClick="closeBanner();">');
theFloaters.play();