滚动的文字说明

下面为效果显示区

脚本说明:
把如下代码加入<body>区域中
<style>
<!--

#listbutton{
border:1px solid #4B4B4B;
background-color:#F3F3F3;
width:50px;
height:12px;
font: normal 11px Arial;
text-align:center;
cursor:pointer;cursor:hand;
}

.expandhighlight, .expandhighlight a{
color:red;
}

-->
</style>
<script language="JavaScript1.2">
//configure tickercontents[] to set the messges you wish be displayed (HTML codes accepted)
var tickercontents=new Array()
tickercontents[0]='用数据广播方式，将信息内容完整镜像到PC机中'
tickercontents[1]='数据广播作为广播电视系统的新一代业务。'
tickercontents[2]='重新构思文化共享结构成为信息产业追求的目标之一。'

//configure the below 2 variables to set the width/background color of the ticker
var tickerwidth='475'
var tickerbgcolor='#DDDDFF'

//configure the below variable to determine the delay between ticking of messages (in miliseconds)
var tickdelay=3000

////Do not edit pass this line////////////////

var ie4=document.all&&navigator.userAgent.indexOf("Opera")==-1
var ns6=document.getElementById&&navigator.userAgent.indexOf("Opera")==-1
var ns4=document.layers

var currentmessage=0
var tickercontentstotal=''

function changetickercontent(){
if (ns4){
tickerobj.document.tickernssub.document.write('<b><a href="#" onClick="return expandlist(event)">显/隐</a></b> | '+tickercontents[currentmessage])
tickerobj.document.tickernssub.document.close()
}
else if (ie4||ns6){
tickerobj.innerHTML=tickercontents[currentmessage]
previousmessage=(currentmessage==0)? tickercontents.length-1 : currentmessage-1
tickerexpand_item=ns6? document.getElementById("expand"+currentmessage) : eval("expand"+currentmessage)
tickerexpand_previousitem=ns6? document.getElementById("expand"+previousmessage) : eval("expand"+previousmessage)
tickerexpand_previousitem.className=""
tickerexpand_item.className="expandhighlight"
}

currentmessage=(currentmessage==tickercontents.length-1)? 0 : currentmessage+1
setTimeout("changetickercontent()",tickdelay)
}

function start_ticking(){
if (ns4) document.tickernsmain.visibility="show"
tickerobj=ie4? tickerlist : ns6? document.getElementById("tickerlist") : ns4? document.tickernsmain : ""
tickerexpandobj=ie4? tickerexpand : ns6? document.getElementById("tickerexpand") : ns4? document.expandlayer : ""

for (i=0;i<tickercontents.length;i++) //get total scroller contents
tickercontentstotal+='<div id="expand'+i+'">- '+tickercontents[i]+'</div>'
if (ie4||ns6)
tickerexpandobj.innerHTML=tickercontentstotal
else{
tickerexpandobj.document.write(tickercontentstotal)
tickerexpandobj.document.close()
}
changetickercontent()
}

function expandlist(e){
if (ie4||ns6){
tickerexpand_parent=ie4? tickerexpand.parentElement : document.getElementById("tickerexpand").parentNode
tickerexpand_parent.style.display=(tickerexpand_parent.style.display=="none")? "" : "none"
}
else{
document.expandlayer.left=e.pageX-e.layerX
document.expandlayer.top= e.pageY-e.layerY+20
document.expandlayer.visibility=(document.expandlayer.visibility=="hide")? "show" : "hide"
return false
}
}

if (ie4||ns6)
document.write('<table border="0" style="width:'+tickerwidth+';border:1px solid black;text-indent:2px" bgcolor="'+tickerbgcolor+'" cellspacing="0" cellpadding="0"><tr><td width="90%" id="tickerlist" bgcolor="'+tickerbgcolor+'"></td><td width="10%" bgcolor="'+tickerbgcolor+'"><div id="listbutton" onClick="expandlist()">显/隐</div></td></tr><tr style="display:none"><td id="tickerexpand" width="90%" bgcolor="'+tickerbgcolor+'"> </td><td width="10%"></td></tr></table>')