<style type="text/css">
<!--
.style1 {font-family: Tahoma}
.menutitle{
cursor:pointer;
margin-bottom: 1px;color:#000000;
width:100%;
padding:0px;
text-align:left;
/*/*/border:0px solid #000000;/* */
}
.submenu{
margin-bottom: 0.5em;
}
-->
</style>
<!--<script type="text/javascript">
if (document.getElementById){ //DynamicDrive.com change
document.write('<style type="text/css">\n')
document.write('.submenu{display: none;}\n')
document.write('</style>\n')
}function SwitchMenu(obj){
if(document.getElementById){
var el = document.getElementById(obj);
var ar = document.getElementById("masterdiv").getElementsByTagName("span"); //DynamicDrive.com change
if(el.style.display != "block"){ //DynamicDrive.com change
for (var i=0; i<ar.length; i++){
if (ar[i].className=="submenu") //DynamicDrive.com change
ar[i].style.display = "none";
}
el.style.display = "block";
}else{
el.style.display = "none";
}
}
}
</script> -->
<!--<div id="masterdiv"> -->
<table width="100%"  border="0" align="center" cellpadding="0" cellspacing="0">
 <% i=1
set rs_sort=server.CreateObject("adodb.recordset")
    rs_sort.open"select * from Product_Sort where PS_Parentid=0 and PS_Dep=1 order by PS_Order asc",conn,1,1
do while not rs_sort.eof
set rs2=server.CreateObject("adodb.recordset")
        rs2.open"select * from Product_Sort where PS_Parentid="&rs_sort("PS_id")&" and PS_Dep=1 order by PS_Order asc",conn,1,1
do while not rs2.eof
set rs3=server.CreateObject("adodb.recordset")
        rs3.open"select * from Product_Sort where PS_Parentid="&rs2("PS_id")&" and PS_Dep=1 order by PS_Order asc",conn,1,1
If rs3.eof then%>
  <tr>
    <td width="14%"><div align="center"><img src="../Cn/images/pd.jpg" width="5" height="7" /></div></td>
    <td width="86%"><!--<div class="menutitle" > -->
         <div align="left"><a href="Product_Detail2.asp?id=<%= rs_sort("PS_id") %>" class="black"><%= rs_sort("PS_Name") %></a></div><!--</div> --></td>
  </tr>
<!--<span class="submenu" id="sub<%'= i %>" name="sub<%'= i %>" > -->
         <table width="100%"  border="0" cellspacing="0" cellpadding="1">
           <tr>
             <td width="18%"><div align="right">--</div></td>
              <td width="82%"> <a href="Product_Detail.asp?id=<%= rs2("PS_ID") %>&Sortid=<%= rs2("PS_ParentID") %>&sub=<%= i %>" class="black"><%= rs2("PS_Name") %></a></td>
           </tr>
       </table>
   <!--</div> -->
  <% Else %>
  <tr>
    <td colspan="2">
       <div align="left">
         <!--<div class="menutitle" onClick="SwitchMenu('sub<%'= i %>')"> -->
 <table width="100%"  border="0" cellspacing="0" cellpadding="0">
            <tr>
              <td width="14%"><div align="center"><img src="../Cn/images/pd.jpg" width="5" height="7" /></div></td>
              <td width="86%"><a href="Product_Detail2.asp?id=<%= rs_sort("PS_id") %>&Sortid=<%= rs2("PS_Parentid") %>" class="black"><%= rs_sort("PS_Name") %></a></td>
            </tr>
         </table>
        <!-- </div> -->
       </div>
       <!--<span class="submenu" id="sub<%'= i %>" name="sub<%'= i %>" > -->
   
   <table width="100%"  border="0" cellspacing="0" cellpadding="1">
           <tr>
             <td width="18%"><div align="right">--</div></td>
              <td width="82%"> <a href="Product_Detail3.asp?id=<%= rs2("PS_id") %>&Sortid=<%=rs3("PS_ParentID") %>" class="black"><%= rs2("PS_Name") %></a></td>
           </tr>
       </table>
   <% do while not rs3.eof %>
   
   <table width="100%"  border="0" cellspacing="0" cellpadding="1">
           <tr>
             <td width="20%"><div align="right">--</div></td>
              <td width="80%"> <a href="Product_Detail.asp?id=<%= rs3("PS_id") %>&Sortid=<%= rs3("PS_Parentid") %>&sub=<%= i %>" class="black"><%= rs3("PS_Name") %></a></td>
           </tr>
       </table>
      
    <%
   rs3.movenext
  loop %>
  </td>
    </tr>      <% end if
i=i+1
rs2.movenext
loop 
rs_sort.movenext
loop
%>
  </table>
   <!-- </span>-->
<!--</div> -->
<!--<script language="javascript">
<%
'showsub=request.QueryString("sub")
'if showsub<>"" then
%>
document.all.sub<%'=showsub%>.style.display="block"
<%'end if%>
</script> -->------就是我的网页代码啊
做完后发现Javascript没有实现隐藏和显示的控制请高手帮忙解决一下啊
附下图