代码如下：

<style>
<!--
.intro {
position:absolute;
left:0;
top:0;
layer-background-color:green;
background-color:green;
border:0.1px solid green
}
-->
</style>
<div id="p1" class="intro">
</div>
<div id="p2" class="intro">
</div>
<div id="p3" class="intro">
</div>
<div id="p4" class="intro">
</div>
<div id="p5" class="intro">
</div>
<div id="p6" class="intro">
</div>
<div id="p7" class="intro">
</div>
<div id="p8" class="intro">
</div>
<div id="p9" class="intro">
</div>
<div id="p10" class="intro">
</div>
<div id="p11" class="intro">
</div>
<div id="p12" class="intro">
</div>
<div id="p13" class="intro">
</div>
<div id="p14" class="intro">
</div>
<div id="p15" class="intro">
</div>
<div id="p16" class="intro">
</div>
<div id="p17" class="intro">
</div>
<div id="p18" class="intro">
</div>
<div id="p19" class="intro">
</div>
<div id="p20" class="intro">
</div>
<div id="p21" class="intro">
</div>
<div id="p22" class="intro">
</div>
<div id="p23" class="intro">
</div>
<div id="p24" class="intro">
</div>
<div id="p25" class="intro">
</div>
<script><script>
var espeed=300
var counter=1
var temp=new Array()
var temp2=new Array()
if (document.layers){
  for (i=1;i<=25;i++){
  temp[i]=eval_r("document.p"+i+".clip")
  temp2[i]=eval_r("document.p"+i)
  temp[i].width=windows.innerWidth/5
  temp[i].height=windows.innerHeight/5
  }
for (i=1;i<=5;i++)
  temp2[i].left=(i-1)*temp[i].width
for (i=6;i<=10;i++){
  temp2[i].left=(i-6)*temp[i].width
  temp2[i].top=temp[i].height
  }
for (i=11;i<=15;i++){
  temp2[i].left=(i-11)*temp[i].width
  temp2[i].top=2*temp[i].height
  }
for (i=16;i<=20;i++){
  temp2[i].left=(i-16)*temp[i].width
  temp2[i].top=3*temp[i].height
  }
for (i=21;i<=25;i++){
  temp2[i].left=(i-21)*temp[i].width
  temp2[i].top=4*temp[i].height
  }
}
function erasecontainerns(){
  window.scrollTo(0,0)
  var whichcontainer=Math.round(Math.random()*25)
  if (whichcontainer==0)
  whichcontainer=1
  if (temp2[whichcontainer].visibility!="hide")
  temp2[whichcontainer].visibility="hide"
  else{
  while (temp2[whichcontainer].visibility=="hide"){
  whichcontainer=Math.round(Math.random()*25)
  if (whichcontainer==0)
  whichcontainer=1
  }
  temp2[whichcontainer].visibility="hide"
  }
  if (counter==25)
  clearInterval(beginerase)
counter++
  espeed-=10
}
 
if (document.all)
  {
  var containerwidth=parseInt(document.body.clientWidth/5)
  var containerheight=parseInt(document.body.offsetHeight/5)
for (i=1;i<=25;i++){
  temp[i]=eval_r("document.all.p"+i+".style")
  temp[i].width=containerwidth
  temp[i].height=containerheight
  }
for (i=1;i<=5;i++)
  temp[i].left=(i-1)*containerwidth
for (i=6;i<=10;i++){
  temp[i].left=(i-6)*containerwidth
  temp[i].top=containerheight
  }
for (i=11;i<=15;i++){
  temp[i].left=(i-11)*containerwidth
  temp[i].top=2*containerheight
  }
for (i=16;i<=20;i++){
  temp[i].left=(i-16)*containerwidth
  temp[i].top=3*containerheight
  }
for (i=21;i<=25;i++){
  temp[i].left=(i-21)*containerwidth
  temp[i].top=4*containerheight
  }
  }
function erasecontainerie(){
  var whichcontainer=Math.round(Math.random()*25)
  if (whichcontainer==0)
  whichcontainer=1
  if (temp[whichcontainer].visibility!="hidden")
  temp[whichcontainer].visibility="hidden"
else{
  while (temp[whichcontainer].visibility=="hidden"){
  whichcontainer=Math.round(Math.random()*25)
  if (whichcontainer==0)
  whichcontainer=1
  }
  temp[whichcontainer].visibility="hidden"
  }
if (counter==25){
  clearInterval(beginerase)
  clearInterval(keeptop)
  }
  counter++
  espeed-=10
}
if (document.layers)
  beginerase=setInterval("erasecontainerns()",espeed)
  else if (document.all){
  beginerase=setInterval("erasecontainerie()",espeed)
  keeptop=setInterval("window.scrollTo(0.0)",100)
  }
</script>