昨天就去各个搜索引擎搜索，今天还搜索，棱是没找到支持w3c标准的，可调用框架广告的随机漂浮js广告代码，
加起来搜索测试不下三四个小时，无奈啊，自己又不是很懂JS，
漂浮代码失效的原因如下：
在使用以下声明时，会使一个最常用的漂浮下拉广告失效
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
直接导致document.body.scrollTop永远等于0， body Scroll永远也不会引发。搜索了一下，发现了解决方案。
即是使用：document.documentElement.scrollTop 替代 document.body.scrollTop
所以我把document.body用document.documentElement替换掉，结果就好用了，真是应了毛主席的年啊句话了
“自己动手，丰衣足食”
共享代码如下：
<!--
var mvtWidth=130 //框架宽度
var mvtHeight=120 //框架高度
var mvtLink="/ad/movie/piao-2.htm" //框架地址
brOK=navigator.javaEnabled()?true:false
ns4=(document.layers)?true:false
ie4=(document.all)?true:false
if(ns4){
document.write('<layer id="mvt" width=40 height=60;"><iframe src="'+mvtLink+'" width="'+mvtWidth+'" height="'+mvtHeight+'"
MARGINWIDTH="0" MARGINHEIGHT="0" HSPACE="0" VSPACE="0" FRAMEBORDER="0" SCROLLING="no"><\/iframe><\/layer>');
}
else{
document.write('<div id="mvt" style="position:absolute; width:40; height:60;"><iframe src="'+mvtLink+'" width="'+mvtWidth+'"
height="'+mvtHeight+'" MARGINWIDTH="0" MARGINHEIGHT="0" HSPACE="0" VSPACE="0" FRAMEBORDER="0"
SCROLLING="no"><\/iframe><\/div>');
}
var vmin=2;
var vmax=5;
var vr=2;
var timer1;
function Chip(chipname,width,height)
{this.named=chipname;
this.vx=vmin+vmax*Math.random();
this.vy=vmin+vmax*Math.random();
this.w=width;
this.h=height;
this.xx=0;
this.yy=0;
this.timer1=null;
}
function movechip(chipname)
{
if(brOK)
{eval("chip="+chipname);
if(ns4)
{pageX=window.pageXOffset;
pageW=window.innerWidth;
pageY=window.pageYOffset;
pageH=window.innerHeight;
}
else
{pageX=window.document.documentElement.scrollLeft;
pageW=window.document.documentElement.offsetWidth-8;
pageY=window.document.documentElement.scrollTop;
pageH=window.document.documentElement.offsetHeight;
}
chip.xx=chip.xx+chip.vx;
chip.yy=chip.yy+chip.vy;
chip.vx+=vr*(Math.random()-0.5);
chip.vy+=vr*(Math.random()-0.5);
if(chip.vx>(vmax+vmin)) chip.vx=(vmax+vmin)*2-chip.vx;
if(chip.vx<(-vmax-vmin)) chip.vx=(-vmax-vmin)*2-chip.vx;
if(chip.vy>(vmax+vmin)) chip.vy=(vmax+vmin)*2-chip.vy;
if(chip.vy<(-vmax-vmin)) chip.vy=(-vmax-vmin)*2-chip.vy;
if(chip.xx<=pageX)
{ chip.xx=pageX;
chip.vx=vmin+vmax*Math.random();
}
if(chip.xx>=pageX+pageW-chip.w)
{ chip.xx=pageX+pageW-chip.w;
chip.vx=-vmin-vmax*Math.random();
}
if(chip.yy<=pageY)
{ chip.yy=pageY;
chip.vy=vmin+vmax*Math.random();
}
if(chip.yy>=pageY+pageH-chip.h)
{ chip.yy=pageY+pageH-chip.h;
chip.vy=-vmin-vmax*Math.random();
}
if(ns4){
eval('document.'+chip.named+'.top ='+chip.yy);
eval('document.'+chip.named+'.left='+chip.xx);
}
else{
eval('document.all.'+chip.named+'.style.pixelLeft='+chip.xx);
eval('document.all.'+chip.named+'.style.pixelTop ='+chip.yy);
}
chip.timer1=setTimeout("movechip('"+chip.named+"')",100); //设置速度，数值越大速度越慢
}
}
function stopme(chipname)
{if(brOK)
{//alert(chipname)
eval("chip="+chipname);
if(chip.timer1!=null)
{clearTimeout(chip.timer1)}
}
}
var mvt;
function mvt()
{
mvt=new Chip("mvt",60,80);
if(brOK){
movechip("mvt");
}
}
window.onload=mvt
//-->