代码简介：
JS仿QQ折叠菜单，JavaScript代码有点多，用时候把它另存为一个新文件好了。可以用到后台管理上很不错。相信你会喜欢的。
代码内容：
<html>
<head>
<title>JavaScript实现仿QQ折叠式菜单代码_网页代码站(www.webdm.cn)</title>
</head>
<body>
<STYLE type="text/css">
A:link { FONT-SIZE: 12px; TEXT-DECORATION: none}
A:visited { FONT-SIZE: 12px; TEXT-DECORATION: none}
A:hover { COLOR: #006CD9; FONT-SIZE: 12px; TEXT-DECORATION: none}
BODY { FONT-SIZE: 12px;}
TD { FONT-SIZE: 12px; line-height: 150%}
</style>
<script language="JavaScript">
<!--
function showitem(id,name)
{
return ("<span><a href='"+id+"' target=_blank>"+name+"</a></span><br>")
}
function switchoutlookBar(number)
{
var i = outlookbar.opentitle;
outlookbar.opentitle=number;
var id1,id2,id1b,id2b
if (number!=i && outlooksmoothstat==0){
if (number!=-1)
{
if (i==-1){
id2="blankdiv";
id2b="blankdiv";
}
else{
id2="outlookdiv"+i;
id2b="outlookdivin"+i;
document.all("outlooktitle"+i).style.border="1px none navy";
document.all("outlooktitle"+i).style.background=outlookbar.maincolor;
document.all("outlooktitle"+i).style.color="#ffffff";
document.all("outlooktitle"+i).style.textalign="center";
}
id1="outlookdiv"+number
id1b="outlookdivin"+number
document.all("outlooktitle"+number).style.border="1px none white";
document.all("outlooktitle"+number).style.background=outlookbar.maincolor; //title
document.all("outlooktitle"+number).style.color="#ffffff";///
document.all("outlooktitle"+number).style.textalign="center";
smoothout(id1,id2,id1b,id2b,0);
}
else
{
document.all("blankdiv").style.display="";
document.all("blankdiv").sryle.height="100%";
document.all("outlookdiv"+i).style.display="none";
document.all("outlookdiv"+i).style.height="0%";
document.all("outlooktitle"+i).style.border="1px none navy";
document.all("outlooktitle"+i).style.background=outlookbar.maincolor;
document.all("outlooktitle"+i).style.color="#ffffff";
document.all("outlooktitle"+i).style.textalign="center";
}
}
}
function smoothout(id1,id2,id1b,id2b,stat)
{
if(stat==0){
tempinnertext1=document.all(id1b).innerHTML;
tempinnertext2=document.all(id2b).innerHTML;
document.all(id1b).innerHTML="";
document.all(id2b).innerHTML="";
outlooksmoothstat=1;
document.all(id1b).style.overflow="hidden";
document.all(id2b).style.overflow="hidden";
document.all(id1).style.height="0%";
document.all(id1).style.display="";
setTimeout("smoothout('"+id1+"','"+id2+"','"+id1b+"','"+id2b+"',"+outlookbar.inc+")",outlookbar.timedalay);
}
else
{
stat+=outlookbar.inc;
if (stat>100)
stat=100;
document.all(id1).style.height=stat+"%";
document.all(id2).style.height=(100-stat)+"%";
if (stat<100)
setTimeout("smoothout('"+id1+"','"+id2+"','"+id1b+"','"+id2b+"',"+stat+")",outlookbar.timedalay);
else
{
document.all(id1b).innerHTML=tempinnertext1;
document.all(id2b).innerHTML=tempinnertext2;
outlooksmoothstat=0;
document.all(id1b).style.overflow="auto";
document.all(id2).style.display="none";
}
}
}
function getOutLine()
{
outline="<table "+outlookbar.otherclass+">";
for (i=0;i<(outlookbar.titlelist.length);i++)
{
outline+="<tr><td name=outlooktitle"+i+" id=outlooktitle"+i+" ";
if (i!=outlookbar.opentitle)
outline+=" nowrap align=center style='cursor:hand;background-color:"+outlookbar.maincolor
+";color:#ffffff;height:20;border:1 none navy' ";
else
outline+=" nowrap align=center style='cursor:hand;background-color:"+outlookbar.maincolor
+";color:white;height:20;border:1 none white' ";
outline+=outlookbar.titlelist[i].otherclass
outline+=" onclick='switchoutlookBar("+i+")'><span class=smallFont>";
outline+=outlookbar.titlelist[i].title+"</span></td></tr>";
outline+="<tr><td name=outlookdiv"+i+" valign=top align=center id=outlookdiv"+i+" style='100%"
if (i!=outlookbar.opentitle)
outline+=";display:none;height:0%;";
else
outline+=";display:;height:100%;";
outline+="'><div name=outlookdivin"+i+" id=outlookdivin"+i+" style='overflow:auto;100%;height:100%'>";
for (j=0;j<outlookbar.itemlist[i].length;j++)
outline+=showitem(outlookbar.itemlist[i][j].key,outlookbar.itemlist[i][j].title);
outline+="</div></td></tr>"
}
outline+="</table>"
return outline
}
function show()
{
var outline;
outline="<div id=outLookBarDiv name=outLookBarDiv style='width=100%;height:100%'>"
outline+=outlookbar.getOutLine();
outline+="</div>"
document.write(outline);
}
function theitem(intitle,instate,inkey)
{
this.state=instate;
this.otherclass=" nowrap ";
this.key=inkey;
this.title=intitle;
}
function addtitle(intitle)
{
outlookbar.itemlist[outlookbar.titlelist.length]=new Array();
outlookbar.titlelist[outlookbar.titlelist.length]=new theitem(intitle,1,0);
return(outlookbar.titlelist.length-1);
}
function additem(intitle,parentid,inkey)
{
if (parentid>=0 && parentid<=outlookbar.titlelist.length)
{
outlookbar.itemlist[parentid][outlookbar.itemlist[parentid].length]=new theitem(intitle,2,inkey);
outlookbar.itemlist[parentid][outlookbar.itemlist[parentid].length-1].otherclass=" nowrap align=left style='height:5' ";
return(outlookbar.itemlist[parentid].length-1);
}
else
additem=-1;
}
function outlook()
{
this.titlelist=new Array();
this.itemlist=new Array();
this.divstyle="style='height:100%;100%;overflow:auto' align=center";
this.otherclass="border=0 cellspacing='0' cellpadding='0' style='height:100%;100%'valign=middle align=center ";
this.addtitle=addtitle;
this.additem=additem;
this.starttitle=-1;
this.show=show;
this.getOutLine=getOutLine;
this.opentitle=this.starttitle;
this.reflesh=outreflesh;
this.timedelay=50;
this.inc=10;
this.maincolor = "#336699"
}
function outreflesh()
{
document.all("outLookBarDiv").innerHTML=outlookbar.getOutLine();
}
function locatefold(foldname)
{
if (foldname=="")
foldname = outlookbar.titlelist[0].title
for (var i=0;i<outlookbar.titlelist.length;i++)
{
if(foldname==outlookbar.titlelist[i].title)
{
outlookbar.starttitle=i;
outlookbar.opentitle=i;
}
}
}
var outlookbar=new outlook();
var tempinnertext1,tempinnertext2,outlooksmoothstat
outlooksmoothstat = 0;
var t;
t=outlookbar.addtitle('网页代码站')
outlookbar.additem('网页特效',t,'/')
outlookbar.additem('代码下载',t,'/')
t=outlookbar.addtitle('计算机编程')
outlookbar.additem('实用技巧',t,'/')
outlookbar.additem('硬件相关',t,'http://www.webdm.cn/')
t=outlookbar.addtitle('技术资料')
outlookbar.additem('Web开发',t,'/')
outlookbar.additem('数据库类',t,'/')
//-->
</script>
<table id=mnuList style="WIDTH:150px;HEIGHT: 100%" cellspacing=0 cellpadding=0 align=center border=0>
<tr>
<td bgcolor=#F0F0E5 id=outLookBarShow style="HEIGHT: 100%" valign=top align=middle name="outLookBarShow">
<script language="JavaScript">
<!--
locatefold("")
outlookbar.show()
//-->
</script>
</td>
</tr>
</table>
</body>
</html>
<br>
<p><a href="http://www.webdm.cn">网页代码站</a> - 最专业的代码下载网站 - 致力为中国站长提供有质量的代码！</p>
代码来自：http://www.webdm.cn/webcode/9e2fa018-d0a7-4b90-856e-12bd9e62734b.html