Javascript 实现下拉列表连动，提示:Array not defined

有一个应用，要求一个下拉列表（class1）的变化触发另一个依赖列表(class2)的变化。参照《下拉框连动（数据库版）》，有以下程序片段：
<%     sql = "select id, name, substring(id,1,2) bigclass from classone where type='1' order by id"
     set rs = session("conn").execute(sql)
%>
<script language="javascript">
     var onecount = 0;
     subcat = new array();    <---------提示：array 未定义------------
     <%    count = 0
     do while not rs.eof        <--------- rs 已经是前面定义的recordset
     %>
     subcat[<%=count%>] = new array("<%=trim(rs("name"))%>","<%=trim(rs("bigclass"))%>","<%=trim(rs("id"))%>");
     <%    count = count+1
        rs.movenext
        loop
        rs.close
        set rs = nothing
     %>
     onecount = <%=count%>
     function chgcls(){
        for (var i=document.search.class2.options.length; i>0; i--){
    document.search.class2.options[i]=null;
        }
        for (i = 0; i<onecount; i++){
    bigclass = "'"&subcat[i][1]&"'";
    if (document.search.class1.options[document.search.class1.selectedindex].value==bigclass){