文字链接说明展开

- 中国WEB开发者网络 (http://www.webasp.net)
-- 网页特效 (http://www.webasp.net/javascript/)
--- 文字链接说明展开 (http://www.webasp.net/javascript/1/591.htm)
-- 发布日期： 2005-06-21
<!-- 网页特效代码由[中国WEB开发者网络:http://www.ChinaWebDev.com]提供！ -->
<!-- 要实现此效果需要 1 个步骤： -->

<!-- 第 1 步： -->
<!-- 把下面的代码加到<BODY></BODY>区域中： -->

<style>
<!--

#tickerarea{
border:1px solid black;
}

#expandbutton{
background-color:white;
width:100px;
}

.expandmenu{
position:absolute;
width:250px;
border:1px solid black;
background-color:white;
visibility:hidden;
z-index:50;
}

.expandmenu a{
text-decoration:none;
font: normal 14px default;
}

.expandmenu_highlight{
background-color:lightyellow;
}

-->
</style>
<script language="JavaScript1.2">

//configure tickercontents[] to set the messges you wish be displayed (HTML codes accepted)
var tickercontents=new Array()
tickercontents[0]='欢迎你光临国内最大的新闻类网站 <a href="http://www.sina.com.cn">新浪网</a> 希望你能有更多的收获!'
tickercontents[1]='欢迎你光临国内最大的娱乐类网站 <a href="http://www.163.com">网易</a> 希望你能有更多的收获!'
tickercontents[2]='欢迎你光临国内最大的搜索类网站 <a href="http://www.sohu.com">搜狐</a> 希望你能有更多的收获!'

//specify how many characters of a message (for each msg) to show in expanded menu:
var charslimit=30

//Below specifies the "expand text". Do not remove onClick=".." portion.
var expandtext='<a href="#" onClick="dropdownit(event);return false">展开</a> <img src="tridown.gif" border=0>'

//configure below variables to set dimensions and main color of the ticker
var tickerwidth='275px'
var tickerheight='75px' //not including "Expand" text
var tickerbgcolor='#DDDDFF'

//configure the below variable to determine the delay between ticking of messages (in miliseconds)
var tickdelay=2500

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

var ie4=document.all || navigator.userAgent.search(/opera.7/i)!=-1 //lump Opera 7 with IE
var ns6=document.getElementById && !document.all && !window.opera
var ns4=document.layers

if (ns4){
expandtext=expandtext.replace(/dropdownit\(event\); *return false/gi, "return dropdownitNS4(event,this)")
tickerheightNS4=parseInt(tickerheight)+19
tickerlistheightNS4=tickerheight
}

var currentmessage=0
var tickercontentstotal=''

if (ie4||ns6) //OUTPUT DROP DOWN MENU
document.write('<div id="tickerexpand" class="expandmenu" style="visibility:hidden"></div>')

function rotatecontent(){
if (ns4){ //OUTPUT HTML for ticker area for NS4
tickerobj.document.tickernssub.document.write(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="expandmenu_highlight"
}
currentmessage=(currentmessage==tickercontents.length-1)? 0 : currentmessage+1
rotatemsgtimer=setTimeout("rotatecontent()",tickdelay)
}

function dropdownit(e){
if (ns6) e.stopPropagation()
else e.cancelBubble=true
tickerexpandobj.style.visibility=tickerexpandobj.style.visibility=="hidden"? "visible" : "hidden"
expandbuttonLeft=ns6? e.pageX-e.layerX : document.body.scrollLeft+event.clientX-event.offsetX
expandbuttonTop=ns6? e.pageY-e.layerY : document.body.scrollTop+event.clientY-event.offsetY
tickerexpandobj.style.left=expandbuttonLeft+"px"
tickerexpandobj.style.top=expandbuttonTop+expandbuttonobj.offsetHeight-3+"px"
}

function dropdownitNS4(e, currentobj){
tickerexpandobj.left=tickerobj.pageX
tickerexpandobj.top=tickerobj.pageY+parseInt(tickerlistheightNS4)+tickerobj.document.expandbuttonNS4.document.height
tickerexpandobj.visibility=(tickerexpandobj.visibility=="hide")? "show" : "hide"
return false
}

function jumptomsg(whichmsg){
clearTimeout(rotatemsgtimer)
if (ie4||ns6)
tickerexpand_item.className=""
currentmessage=whichmsg
rotatecontent()
}

function initialize_ticker(){
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 : ""
expandbuttonobj=ie4? expandbutton : ns6? document.getElementById("expandbutton") : ""
for (i=0;i<tickercontents.length;i++){ //get total scroller contents
tempstringcontainer=tickercontents[i].replace(/\<[^\>]+\>/g, ''); //remove HTML tags
tickercontentstotal+='<div id="expand'+i+'">- <a href="javascript:jumptomsg('+i+')">'+tempstringcontainer.substring(0, charslimit)+'...</a></div>'
}
if (ie4||ns6){
tickerexpandobj.innerHTML=tickercontentstotal
expandbuttonobj.innerHTML=expandtext
document.onclick=function(){
tickerexpandobj.style.visibility="hidden"
}
}
else if (ns4){
tickerexpandobj.document.write(tickercontentstotal)
tickerexpandobj.document.close()
tickerexpandobj.clip.width=parseInt(tickerwidth)*0.9
tickerobj.document.expandbuttonNS4.document.write(expandtext)
tickerobj.document.expandbuttonNS4.document.close()
tickerexpandobj.captureEvents(Event.CLICK)
tickerexpandobj.onclick=function(){
tickerexpandobj.visibility="hide"
}
}
rotatecontent()
}

if (ie4||ns6) //OUT HTML FOR TICKER AREA for IE/NS6
document.write('<table id="tickerarea" border="0" style="width:'+tickerwidth+';" bgcolor="'+tickerbgcolor+'" cellspacing="0" cellpadding="0"><tr><td id="tickerlist" width="100%" height="'+tickerheight+'" style="padding-left:3px" valign="top"></td></tr><tr><td width="90%"><div id="expandbutton" style="position:relative"></div></td></tr></table>')

window.onload=initialize_ticker
</script>

<ilayer id="tickernsmain" width=&{tickerwidth}; height=&{tickerheightNS4}; bgColor=&{tickerbgcolor}; visibility=hide><layer id="tickernssub" width=&{tickerwidth}; left=0 top=0></layer><layer id="expandbuttonNS4" left=0 top=&{tickerlistheightNS4};></layer></ilayer>
<layer id="expandlayer" bgColor=&{tickerbgcolor}; visibility=hide></layer>

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