代码：
<SCRIPT language=javascript>
var MAX_Z_INDEX=30
var col_menu=[]; //menu collection
function alai_menu_xp(width,imagelist)
{
var menu=this
this.item=[]
this.isShow=false
this.bar=null
this.body=document.createElement("table")
this.imagelist=imagelist
var icons=imagelist==null?[]:imagelist.item
document.body.insertAdjacentElement("beforeEnd",this.body)
this.body.style.cssText="position:absolute;;border-collapse:collapse;border-spacing:1;border:1 solid #0B2565;background-color:white;color:black;display:none;shadow(color=gray,direction=135);table-layout:fixed;filter:progid:DXImageTransform.Microsoft.Shadow(color=’#cccccc’, Direction=135, Strength=4);"
this.body.style.pixelWidth=width==null?200:width
var run=function(cmd,a0,a1,a2)
{
if(typeof(cmd)=="string")
{ try{return eval(cmd);}
catch(E){alert("run script string error:\n"+cmd);}
}
else if(typeof(cmd)=="function"){return cmd(a0,a1,a2);}
}
this.add=function(Text,ico,exeType,exeArg,target)
{
var item=menu.body.insertRow()
item.style.cssText="font-size:10pt;cursor:default;height:24;"
var col1=item.insertCell()
var col2=item.insertCell()
col2.innerHTML=Text
col2.style.cssText="height:24;padding-left:5;width:100%;"
col1.style.cssText="width:26;background-color:buttonface;height:24;text-align:center;"
var icon=new Image()
if(typeof(ico)=="string")if(icons[ico]!=null)ico=icons[ico].src
if(ico!=null && ico!=""){icon.src=ico;col1.insertAdjacentElement("afterBegin",icon);}
item.subMenu=null
item.enable=true
item.execute=new Function()
item.remove=function(){item.removeNode(true);}
exeType=exeType==null?"":exeType
switch(exeType.toLowerCase())
{
case "hide":
item.execute=function(){menu.hide();}
break;
case "url":
if(typeof(exeArg)!="string")break;
if(target==null||target=="")target="_blank";
item.execute=function(){menu.hide();open(exeArg,target);}
break;
case "js":
if(typeof(exeArg)!="string")break;
item.execute=function(){menu.hide();eval(exeArg)}
break;
case "sub":
if(typeof(exeArg.body)=="undefined")break;
item.execute=function(){menu.show(exeArg);}
col2.innerHTML ="<span style=’width:90%;’>"+col2.innerHTML+"</span><span style=’font-family:Wingdings 3;’>}</span>";
item.subMenu=exeArg;
break;
}
menu.item[menu.item.length]=item
item.onmouseover=function()
{
col1.style.backgroundColor="#B7BED3"
icon.style.filter="dropshadow(color=gray,offx=2,offy=2)"
item.style.color=item.enable?"black":"gray";
item.style.backgroundColor="#B7BED3";
col1.style.border=col2.style.border="1 solid #0B2565"
col1.style.borderRight=col2.style.borderLeft="0"
for(var i=0;i<menu.item.length;i++){if(menu.item[i].subMenu!=null)menu.item[i].subMenu.hide();}
if(item.subMenu!=null)menu.show(item.subMenu)
}
item.onmouseout=function()
{
col1.style.backgroundColor="buttonface"
icon.style.filter=""
item.style.backgroundColor="white";
col1.style.border=col2.style.border=""
}
item.onmousedown=item.onmouseup=function(){event.cancelBubble=true;}
item.onclick=function(){event.cancelBubble=true;if(this.enable)run(item.execute);}
return item
}
this.addLink=function(url_,text,target,icon)
{
if(text==null || text=="")text=url_
if(target==null || target=="")target="_blank"
return menu.add(text,icon,"url",url_,target)
}
this.seperate=function(){var row=menu.body.insertRow();row.style.cssText="padding-left:0;font-size:10pt;height:8;cursor:default;width:100%;border:0;";row.insertCell().style.cssText="width:26;background-color:buttonface;height:100%;text-align:center;";var cell=row.insertCell();cell.style.cssText="height:8;padding-left:5;text-align:right;";cell.innerHTML="<hr width=’97%’>";}
this.show=function()
{
var a=arguments;
var x,y,m=menu.body
if(a.length==0)
{
x=event.clientX+document.body.scrollLeft+document.body.scrollLeft
y=event.clientY+document.body.scrollTop
}
else if(a.length==1 && typeof(a[0])=="object")
{
if(typeof(a[0].body)!="undefined")
{
m=a[0].body
m.style.display="block"
if(m.style.pixelWidth<document.body.offsetWidth-event.x)
{ x=menu.body.style.pixelLeft+menu.body.offsetWidth}
else
{ x=menu.body.style.pixelLeft-m.style.pixelWidth}
if(m.offsetHeight<document.body.offsetHeight-event.clientY)
{ y=event.clientY+document.body.scrollTop-event.offsetY}
else
{ y=event.clientY-m.offsetHeight+document.body.scrollTop-event.offsetY}
}
else
{
//x=event.clientX+document.body.scrollLeft-event.offsetX-2
//y=event.clientY+document.body.scrollTop+a[0].offsetHeight-event.offsetY-4
obj=a[0];y=obj.offsetHeight;x=0;
for(;obj.tagName.toLowerCase()!="body";obj=obj.offsetParent)
{
x+=obj.offsetLeft;y+=obj.offsetTop;
}
}
}
else if(a.length==2 && typeof(a[0])=="number" && typeof(a[1])=="number")
{
x=a[0];y=a[1];
}
else{alert("arguments type or number not match!");return;}
for(var i=0;i<menu.item.length;i++)menu.item[i].style.color=menu.item[i].enable?"black":"gray"
m.style.pixelLeft=x;
m.style.pixelTop=y;
m.style.display="block";
m.style.zIndex=++MAX_Z_INDEX
menu.isShow=true;
if(menu.bar!=null)
{
menu.bar.style.backgroundColor="buttonface";
menu.bar.style.border="1 solid gray"
menu.bar.style.filter="progid:DXImageTransform.Microsoft.Shadow(color=’white’, Direction=100, Strength=6);"
}
//for(var i=2;i<=10;i++){setTimeout("document.all["+Menu.body.sourceIndex+"].style.filter=’alpha(opacity="+(i*10)+")’;",i*20);}
event.cancelBubble=true;
}
this.hide=function()
{
menu.body.style.display="none";
menu.isShow=false;
if(menu.bar!=null)
{ menu.bar.style.border="1 solid buttonface"
menu.bar.style.backgroundColor="buttonface";
menu.bar.style.filter=""
}
}
this.hideAll=function(){for(var i=0;i<col_menu.length;i++)col_menu[i].hide();}
this.hideOthers=function(){for(var i=0;i<col_menu.length;i++)if(col_menu[i]!=menu)col_menu[i].hide();}
col_menu[col_menu.length]=this
document.body.onclick=this.hideAll
}
function menu_bar_xp(top,left)
{
var mb=this
this.item=[]
this.menu=[]
this.body=document.createElement("div")
document.body.insertAdjacentElement("beforeEnd",this.body)
this.body.style.cssText="position:absolute;cursor:default;padding:2;background-color:buttonface;height:25;z-index:5;font-size:10pt;color:black;top:"+top+";left:"+left
var chkShow=function(){for(var i=0;i<mb.menu.length;i++)if(mb.menu[i].isShow)return true;return false;}
this.add=function(Text,menu)
{
var item=document.createElement("span")
mb.body.insertAdjacentElement("beforeEnd",item)
item.style.cssText="margin:0 7 0 3;padding:2 4 2 4;text-align:center;height:23;background-color:buttonface;border:1 solid buttonface"
item.innerText=Text
item.onmouseover=function()
{
this.style.border="1 solid #0B2565"
this.style.backgroundColor="#B7BED3";
if(chkShow()){for(var i=0;i<col_menu.length;i++)col_menu[i].hide();menu.show(item);}
}
item.onmouseout=function()
{
if(!menu.isShow)
{ item.style.border="1 solid buttonface"
item.style.backgroundColor="buttonface";
}
}
item.onmousedown=item.onmouseup=function(){event.cancelBubble=true;menu.show(item)}
item.onclick=function(){event.cancelBubble=true;menu.show(item);}
mb.item[mb.item.length]=item
mb.menu[mb.menu.length]=menu
menu.bar=item
return item
}
}
function alai_menu_bar1(toObj)
{
var bar=this
bar.item=[]
bar.add=function(Text,mnu)
{
var item=document.createElement("span")
toObj.insertAdjacentElement("beforeEnd",item)
item.innerText= " | " + Text
item.style.cursor = "hand"
bar.item[bar.item.length]=item
item.onmouseover=function()
{
document.body.click()
if(mnu!=null)mnu.show(this)
}
return item
}
{
var item=document.createElement("span")
toObj.insertAdjacentElement("beforeEnd",item)
item.innerText= "隐藏导航栏"
item.style.cursor = "hand"
item.onclick=function()
{
var isHide=(rightmenu.style.display==’none’);
rightmenu.style.display=isHide?’block’:'none’;
this.innerText=isHide?’隐藏导航栏’:'显示导航栏’;
}
bar.item[bar.item.length]=item
}
}
document.body.onload=function()
{
try{
var imgUp="/images/www_donews_net/zhizhi/25273/o_Expand.gif";
var imgDown="/images/www_donews_net/zhizhi/25273/o_Collapse.gif";
var mc=new alai_menu_bar1(document.all.tagline) //建立导航菜单
var h3=document.getElementsByTagName("h3")
for(var i=0;i<h3.length;i++)
{
if(h3[i].innerText == "My Links")
{
h3[i].innerText = "系统功能";
}
if(h3[i].innerText == "Blog Stats")
{
h3[i].innerText = "统计信息";
}
if(h3[i].innerText == "News")
{
h3[i].innerText = "公告信息";
}
if(h3[i].sourceIndex>rightmenu.nextSibling.sourceIndex)break
var img=new Image()
img.src=imgUp;
img.height=9; img.width=12;
h3[i].insertAdjacentElement("afterBegin",img);
h3[i].onclick=function()
{
var ul=this.nextSibling;
var img=document.all[this.sourceIndex+1];
ul.style.display=(ul.style.display=="none")?"block":"none";
img.src=(ul.style.display=="none")?imgDown:imgUp;
img.height=9; img.width=12;
};
if(h3[i].nextSibling.tagName.toLowerCase()!="ul")continue
var mnu=new alai_menu_xp(260)
var items=h3[i].nextSibling.children
if(items==null)continue
for(var j=0;j<items.length;j++)
{
var item=items[j].childNodes[0]
if(item==null)continue
if(typeof(item.innerText)=="undefined" || typeof(item.href)=="undefined")continue
if(item.target=="")item.target="_self"
mnu.addLink(item.href,item.innerText,item.target,"/images/www_donews_net/zhizhi/25273/o_html.gif")
}
if(mnu.item.length>0)mc.add(h3[i].innerText,mnu)
}
h3[0].click();
h3[1].click();
h3[3].click();
h3[4].click();
h3[6].click();
h3[7].click();
h3[8].click();
h3[9].click();
} catch(e){}
}
</SCRIPT>