怎样让<div>里的ID自增

http://zhidao.baidu.com/question/122086235.html
这问题里也有答案，但看不懂啊，能提供详细的代码吗？
下面是我的代码：

<%
While ((Repeat1__numRows <> 0) AND (NOT shownews.EOF))
%>
<div name="CollapsiblePanel" class="CollapsiblePanel">
<div class="CollapsiblePanelTab" tabindex="0"><%=(shownews.Fields.Item("user_name").Value)%></div>
<div class="CollapsiblePanelContent"><%=(shownews.Fields.Item("news_content").Value)%></div>
</div>
<%
Repeat1__index=Repeat1__index+1
Repeat1__numRows=Repeat1__numRows-1
shownews.MoveNext()
Wend
%>
<script type="text/javascript">
var CollapsiblePanel1 = new Spry.Widget.CollapsiblePanel("CollapsiblePanel1");
</script>

<%
i=1
While ((Repeat1__numRows <> 0) AND (NOT shownews.EOF))
%>
<div id="CollapsiblePanel<%=i%>" class="CollapsiblePanel">
<div class="CollapsiblePanelTab" tabindex="0"><%=(shownews.Fields.Item("user_name").Value)%></div>
<div class="CollapsiblePanelContent"><%=(shownews.Fields.Item("news_content").Value)%></div>
</div>
<%
i=i+1
Repeat1__index=Repeat1__index+1
Repeat1__numRows=Repeat1__numRows-1
shownews.MoveNext()
Wend
%>
<script type="text/javascript">
var CollapsiblePanel1 = new Spry.Widget.CollapsiblePanel("CollapsiblePanel1");
</script>