求助XSL分页问题.求高人指点

XML code

<?xml version="1.0" encoding="utf-8"?>
<list>
  <info>12345</info>
  <fenlei title="分类1">
    <wenzhang>
      <id>1</id>
      <biaoti>文章1</biaoti>
      <url>1.shtml</url>
      <uptime>2010-12-13 2:02:37</uptime>
      <num>171</num>
    </wenzhang>
    <wenzhang>
      <id>2</id>
      <biaoti>文章2</biaoti>
      <url>2.shtml</url>
      <uptime>2010-12-13 2:02:38</uptime>
      <num>601</num>
    </wenzhang>
  </fenlei>
  <fenlei title="分类2">
    <wenzhang>
      <id>3</id>
      <biaoti>文章3</biaoti>
      <url>3.shtml</url>
      <uptime>2010-12-13 2:02:37</uptime>
      <num>171</num>
    </wenzhang>
    <wenzhang>
      <id>4</id>
      <biaoti>文章4</biaoti>
      <url>4.shtml</url>
      <uptime>2010-12-13 2:02:37</uptime>
      <num>171</num>
    </wenzhang>
    <wenzhang>
      <id>5</id>
      <biaoti>文章5</biaoti>
      <url>5.shtml</url>
      <uptime>2010-12-13 2:02:37</uptime>
      <num>171</num>
    </wenzhang>
    <wenzhang>
      <id>6</id>
      <biaoti>文章6</biaoti>
      <url>6.shtml</url>
      <uptime>2010-12-13 2:02:37</uptime>
      <num>171</num>
    </wenzhang>
    <wenzhang>
      <id>7</id>
      <biaoti>文章7</biaoti>
      <url>7.shtml</url>
      <uptime>2010-12-13 2:02:37</uptime>
      <num>171</num>
    </wenzhang>
  </fenlei>
  <fenlei title="分类3">
    <wenzhang>
      <id>8</id>
      <biaoti>文章8</biaoti>
      <url>8.shtml</url>
      <uptime>2010-12-13 2:02:37</uptime>
      <num>171</num>
    </wenzhang>
    <wenzhang>
      <id>9</id>
      <biaoti>文章9</biaoti>
      <url>9.shtml</url>
      <uptime>2010-12-13 2:02:37</uptime>
      <num>171</num>
    </wenzhang>
    <wenzhang>
      <id>10</id>
      <biaoti>文章10</biaoti>
      <url>10.shtml</url>
      <uptime>2010-12-13 2:02:37</uptime>
      <num>171</num>
    </wenzhang>
    <wenzhang>
      <id>11</id>
      <biaoti>文章11</biaoti>
      <url>11.shtml</url>
      <uptime>2010-12-13 2:02:37</uptime>
      <num>171</num>
    </wenzhang>
    <wenzhang>
      <id>12</id>
      <biaoti>文章12</biaoti>
      <url>12.shtml</url>
      <uptime>2010-12-13 2:02:37</uptime>
      <num>171</num>
    </wenzhang>
  </fenlei>
</list>         

上面是个样板.我的数据太多了.如果一次全部显示网页会很长

我是想让他显示前三个"wenzhang" 和后三个 "wenzhang". 中间wenzhang以及分类名称的用div隐藏掉.

输出效果如下:
HTML code

分类一
文章1 文章2 
分类二
文章3
.........其他全部隐藏掉的内容.......

文章10 文章11 文章12

打算利用网上的分页原理来实现.可是我才接触XML不熟悉.通宵搞了一晚上还是不行.闷. 哪位大哥指教下...无限感激中....

读取 判断数据的行
以 行 分页