广告轮播效果

<SCRIPT language=JavaScript1.2>
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var scrollerwidth=760
var scrollerheight=126
var scrollerbgcolor='#FFFFFF'
var pausebetweenimages=3000
var waitingtime=3

var slideimages=new Array()
slideimages[0]='<iframe MARGINWIDTH=0 MARGINHEIGHT=0 HSPACE=0 VSPACE=0 FRAMEBORDER=0 SCROLLING=no src="Noname3.html" height=126 width=760></iframe>'
slideimages[1]='<iframe MARGINWIDTH=0 MARGINHEIGHT=0 HSPACE=0 VSPACE=0 FRAMEBORDER=0 SCROLLING=no src="Noname4.html" height=126 width=760></iframe>'
slideimages[2]='<iframe MARGINWIDTH=0 MARGINHEIGHT=0 HSPACE=0 VSPACE=0 FRAMEBORDER=0 SCROLLING=no src="Noname4.html" height=126 width=760></iframe>'
slideimages[3]='<iframe MARGINWIDTH=0 MARGINHEIGHT=0 HSPACE=0 VSPACE=0 FRAMEBORDER=0 SCROLLING=no src="Noname4.html" height=126 width=760></iframe>'
slideimages[4]='<iframe MARGINWIDTH=0 MARGINHEIGHT=0 HSPACE=0 VSPACE=0 FRAMEBORDER=0 SCROLLING=no src="Noname4.html" height=126 width=760></iframe>'

if (slideimages.length>1)
i=2
else
i=0
function move1(whichlayer){
 tlayer=eval(whichlayer)
 if (tlayer.top>0&&tlayer.top<=5){
  tlayer.top=0
  setTimeout("move1(tlayer)",pausebetweenimages)
  setTimeout("move2(document.main.document.second)",pausebetweenimages)
  return
 }
 if (tlayer.top>=tlayer.document.height*-1){
  tlayer.top-=5
  setTimeout("move1(tlayer)",waitingtime)
 }
 else{
  tlayer.top=scrollerheight
  tlayer.document.write(slideimages[i])
  tlayer.document.close()
  if (i==slideimages.length-1)
  i=0
  else
  i++
 }
}

function move2(whichlayer){
 tlayer2=eval(whichlayer)
 if (tlayer2.top>0&&tlayer2.top<=5){
  tlayer2.top=0
  setTimeout("move2(tlayer2)",pausebetweenimages)
  setTimeout("move1(document.main.document.first)",pausebetweenimages)
  return
 }
 if (tlayer2.top>=tlayer2.document.height*-1){
  tlayer2.top-=5
  setTimeout("move2(tlayer2)",waitingtime)
 }
 else{
  tlayer2.top=scrollerheight
  tlayer2.document.write(slideimages[i])
  tlayer2.document.close()
  if (i==slideimages.length-1)
  i=0
  else
  i++
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}
function move3(whichdiv){
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  tdiv.style.pixelTop=0
  setTimeout("move3(tdiv)",pausebetweenimages)
  setTimeout("move4(second2)",pausebetweenimages)
  return
 }
 if (tdiv.style.pixelTop>=tdiv.offsetHeight*-1){
  tdiv.style.pixelTop-=5
  setTimeout("move3(tdiv)",waitingtime)
 }
 else{
  tdiv.style.pixelTop=scrollerheight
  tdiv.innerHTML=slideimages[i]
  if (i==slideimages.length-1)
  i=0
  else
  i++
 }
}
function move4(whichdiv){
 tdiv2=eval(whichdiv)
 if (tdiv2.style.pixelTop>0&&tdiv2.style.pixelTop<=5){
  tdiv2.style.pixelTop=0
  setTimeout("move4(tdiv2)",pausebetweenimages)
  setTimeout("move3(first2)",pausebetweenimages)
  return
 }
 if (tdiv2.style.pixelTop>=tdiv2.offsetHeight*-1){
  tdiv2.style.pixelTop-=5
  setTimeout("move4(second2)",waitingtime)
 }
 else{
  tdiv2.style.pixelTop=scrollerheight
  tdiv2.innerHTML=slideimages[i]
  if (i==slideimages.length-1)
  i=0
  else
  i++
 }
}
function startscroll(){
 if (document.all){
  move3(first2)
  second2.style.top=scrollerheight
 }
 else if (document.layers){
  move1(document.main.document.first)
  document.main.document.second.top=scrollerheight+5
  document.main.document.second.visibility='show'
 }
}
window.onload=startscroll
//-->
</SCRIPT>
<ILAYER id=main bgcolor="&{scrollerbgcolor};"
height="&{scrollerheight};" width="&{scrollerwidth};">
<LAYER id=first
width="&{scrollerwidth};" top="1" left="0">
<SCRIPT language=JavaScript1.2>
if (document.layers)
document.write(slideimages[0])
</SCRIPT>
</LAYER><LAYER id=second width="&{scrollerwidth};" top="0" left="0"
visibility="hide">
<SCRIPT language=JavaScript1.2>
if (document.layers)
document.write(slideimages[1])
</SCRIPT>
</LAYER></ILAYER>

<SCRIPT language=JavaScript1.2>
<!--
if (document.all){
document.writeln('<span id="main2" style="position:relative;width:'+scrollerwidth+';height:'+scrollerheight+';overflow:hiden;background-color:'+scrollerbgcolor+'">')
document.writeln('<div style="position:absolute;width:'+scrollerwidth+';height:'+scrollerheight+';clip:rect(0 '+scrollerwidth+' '+scrollerheight+' 0);left:0;top:0">')
document.writeln('<div id="first2" style="position:absolute;width:'+scrollerwidth+';left:0;top:1;">')
document.write(slideimages[0])
document.writeln('</div>')
document.writeln('<div id="second2" style="position:absolute;width:'+scrollerwidth+';left:0;top:0">')
document.write(slideimages[1])
document.writeln('</div>')
document.writeln('</div>')
document.writeln('</span>')
}
//-->
</SCRIPT>