文字轮番交替出现

<title></title>
<script language="JavaScript">
var delay=2000
var scrollwidth=330
var scrollheight=75
var message=new Array()
var openingtag=''
message[0]='当时发生的'
message[1]='可的撒为全文'
message[2]='同时规范的过'
var closingtag=''
var hoffset=-10
</script>
<ilayer width= && #123;
scrollwidth}; height= && #123;
scrollheight}; name="sslide">
<layer name="sslide2" width= && #123;
scrollwidth}; height= && #123;
scrollheight};></layer>
</ilayer>
<script language="JavaScript1.2">
var inc=1
var ns4=document.layers
var ie5ns6=document.getElementById||document.all
if (ie5ns6)
document.write(openingtag+'+scrollwidth+';height:'+scrollheight+';">'+message[0]+''+closingtag)
function updatemsg(){
crossobj.style.left=-2000
crossobj.style.fontStyle="italic"
crossobj.innerHTML=message[inc]
crossobj.style.left=crossobj.offsetWidth*(-1)+hoffset
start=setInterval("animatein()",50)
inc=(inc<message.length-1)? inc+1 : 0
}
function animatein(){
if (parseInt(crossobj.style.left)<0)
crossobj.style.left=parseInt(crossobj.style.left)+20
else{
crossobj.style.left=0
crossobj.style.fontStyle="normal"
clearInterval(start)
}
}
function updatemsgns4(){
document.sslide.document.sslide2.document.write(openingtag+message[inc]+closingtag)
document.sslide.document.sslide2.document.close()
inc=(inc<message.length-1)? inc+1 : 0
}
function initialize(){
if (ie5ns6){
crossobj=document.getElementById? document.getElementById("flyin") : document.all.flyin
setInterval("updatemsg()",delay+1000)
}
else if (ns4){
document.sslide.document.sslide2.document.write(openingtag+message[0]+closingtag)
document.sslide.document.sslide2.document.close()
setInterval("updatemsgns4()",delay)
}
}
window.onload=initialize
</script>