关键代码：

<%
set conn=server.createobject("ADODB.CONNECTION")
connstr="DBQ="+server.mappath("db.mdb")+";DefaultDir=;
DRIVER={Microsoft Access Driver (*.mdb)};"
conn.open connstr
function menu(id)
set rs=server.CreateObject("adodb.recordset")
sql="select * from menu where id="&id&" order by url,id"
rs.open sql,conn,,
if rs.recordcount=0 then
 rs.close
 set rs=nothing
 exit function
end if
response.write("<table border='0' cellspacing='0' cellpadding='0'>")
i=
while not rs.eof
if len(rs("url"))>0 then
 if i=rs.recordcount then
  menutype="file"
 else
  menutype="file"
 end if
 menuname="<a href='"&rs("url")&"' target='_blank'>"&rs("menuname")&"</a>"
 onmouseup=""
else
 if i=rs.recordcount then
  menutype="menu"
  listtype="list"
  onmouseup="with(eval('id"&rs("id")&"'))if(style.display=='')
{style.display='none';this.className='menu';}else{style.display='';this.className='menu';}"
 else
  menutype="menu"
  listtype="list"
  onmouseup="with(eval('id"&rs("id")&"'))if(style.display=='')
{style.display='none';this.className='menu';}else{style.display='';this.className='menu';}"
 end if
 menuname=rs("menuname")
end if
%>
  <tr>
    <td class="<%= menutype%>" onMouseUp="<%= onmouseup%>"><%= menuname%></td>
  </tr>
<%if len(rs("url"))< then%>
  <tr id="id<%= rs("id")%>" style="display:none">
    <td class="<%= listtype%>"><%menu(rs("id"))%></td>
  </tr>
<%
end if
rs.movenext
i=i+
wend
response.write("</table>")
rs.close
set rs=nothing
end function
%>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb">
<title>=========无限级目录树=========http://www.knowsky.com</title>
<style type="text/css">
<!--
.menu {
 background-image: url(folder.gif);
 background-repeat: no-repeat;
 height: 7px;
 left: px;
 padding-left: px;
 cursor: hand;
}
.menu {
 background-image: url(folder.gif);
 background-repeat: no-repeat;
 height: 7px;
 left: px;
 padding-left: px;
 cursor: hand;
}
.menu {
 background-image: url(folder.gif);
 background-repeat: no-repeat;
 height: 7px;
 left: px;
 padding-left: px;
 cursor: hand;
}
.menu {
 background-image: url(folder.gif);
 background-repeat: no-repeat;
 height: 7px;
 left: px;
 padding-left: px;
 cursor: hand;
}
.list {
 padding-left: 0px;
 background-image: url(list.gif);
 background-repeat: repeat-y;
}
.list {
 padding-left: 0px;
}
.file {
 background-image: url(file.gif);
 background-repeat: no-repeat;
 height: 6px;
 cursor: hand;
 padding-left: px;
}
.file {
 background-image: url(file.gif);
 background-repeat: no-repeat;
 height: 6px;
 cursor: hand;
 padding-left: px;
}
body {
 font-size: 9pt;
 color: #000000;
 background-color: #FFFFFF;
}
a:link {
 font-size: 9pt;
 color: #000000;
 text-decoration: none;
}
a:visited {
 font-size: 9pt;
 color: #000000;
 text-decoration: none;
}
a:hover {
 font-size: 9pt;
 color: #0000FF;
 text-decoration: none;
 position: relative;
 right: px;
 bottom: px;
}
a:active {
 font-size: 9pt;
 color: #000000;
 text-decoration: none;
}
-->
</style>
</head>
<body>
<a href="http://www.domain.com/" target="_blank">http://www.domain.com/</a>
提供最新下载《<a href="menu.asp">管理</a>》<br>
<%
menu 0
conn.close
set conn=nothing
%>
</body>
</html>