<script src="//ajax.googleapis.com/ajax/libs/jquery/1.10.2/jquery.min.js"></script>
<script src="jquery.chained.min.js"></script>
<select id="mark" name="mark">
<option value="">--</option>
<option value="bmw">BMW</option>
<option value="audi">Audi</option>
</select>
<select id="series" name="series">
<option value="">--</option>
<option value="series-3" class="bmw">3 series</option>
<option value="series-5" class="bmw">5 series</option>
<option value="series-6" class="bmw">6 series</option>
<option value="a3" class="audi">A3</option>
<option value="a4" class="audi">A4</option>
<option value="a5" class="audi">A5</option>
</select>
<%
For r = LBound(arrData, 2) To UBound(arrData, 2)
ListID = arrData(0,r)
Symbol = arrData(1,r)
%>
<option value="<%=ListID%>"><%=Symbol%></option>
<%
next
%>