技术问题：如何实现用js完成与flash的上下移动的效果

Question

<marquee align="left" direction="up" scrollamount="5" width="90%" height="100" scrolldelay="300"  onmouseover="this.stop();this.scrolldelay='20000';this.start();" onmouseout="this.stop();this.scrolldelay='300';this.start();">
<table border=1 width="90%">
<tr><td>Item 1</td></tr>
<tr><td>Item 2</td></tr>
<tr><td>Item 3</td></tr>
<tr><td>Item 4</td></tr>
<tr><td>Item 5</td></tr>
<tr><td>Item 6</td></tr>
<tr><td>Item 7</td></tr>
<tr><td>Item 8</td></tr>
<tr><td>Item 9</td></tr>
<tr><td>Item 0</td></tr>
<tr><td>Item 11</td></tr>
<tr><td>Item 12</td></tr>
<tr><td>Item 13</td></tr>
<tr><td>Item 14</td></tr>
<tr><td>Item 15</td></tr>
<tr><td>Item 16</td></tr>
</table>
</marquee>

Answer 1

<TD WIDTH=200>
<DIV ID="news" STYLE="padding:8px;overflow-y:hidden;overflow-x:hidden;background:#ffffff;height:130px;width:243px;z-index:1">
<LI>灰豆宝宝.net1号</LI><BR>
<LI>灰豆宝宝.net2号</LI><BR>
<LI>灰豆宝宝.net3号</LI><BR>
<LI>灰豆宝宝.net4号</LI><BR>
<LI>灰豆宝宝.net5号</LI><BR>
<LI>灰豆宝宝.net6号</LI><BR>
<LI>灰豆宝宝.net7号</LI><BR>
<LI>灰豆宝宝.net8号</LI><BR>
<LI>灰豆宝宝.net1号</LI><BR>
<LI>灰豆宝宝.net2号</LI><BR>
<LI>灰豆宝宝.net3号</LI><BR>
<LI>灰豆宝宝.net4号</LI><BR>
<LI>灰豆宝宝.net5号</LI><BR>
<LI>灰豆宝宝.net6号</LI><BR>
<LI>灰豆宝宝.net7号</LI><BR>
<LI>灰豆宝宝.net8号</LI><BR>
</DIV>
</TD>
<div align="center" style="height:130px;width:243px;"> 
  <script>var timer</script>
  <br>
  <input type="button" value="Up" value="up" onmousedown="timer1=setInterval('news.scrollTop++',1)"
onmouseup="clearInterval(timer1)" 
onmouseover="timer=setInterval('news.scrollTop++',20)" onmouseout="clearInterval(timer)">
  <input type="button" value="down"  onmousedown="timer1=setInterval('news.scrollTop--',1)" 
onmouseup="clearInterval(timer1)"
onmouseover="timer=setInterval('news.scrollTop--',20)" onmouseout="clearInterval(timer)">
</div>