<%
set rss=server.createobject("adodb.recordset")
sqls = "select * from SmallClass order by sj desc"
rss.open sqls,conn,1,1
%>
<script language = "JavaScript">
var onecount;
subcat = new Array();
<%
count = 0
do while not rss.eof
%>
subcat[<%=count%>] = new Array("<%= trim(rss("id"))%>","<%=trim(rss("dl"))%>","<%= trim(rss("smallclassname"))%>");
<%
count = count + 1
rss.movenext
loop
rss.close
%>
onecount=<%=count%>;

function changelocation(locationid)
{
document.myform.SmallClassName.length = 1;
var locationid=locationid;
var i;
for (i=0;i < onecount; i++)
{
if (subcat[i][1] == locationid)
{
document.myform.SmallClassName.options[document.myform.SmallClassName.length] = new Option(subcat[i][2], subcat[i][0]);
}
}
}

</script>

我用这个来实现，下拉框分类，选择主分类下拉框，副下拉框会变成主类相对应的父类，之前是好的，但是父类一边多久不行了，子类不变化了，求救，请问怎么改，谢谢！