DIV显示问题
<script Language=JavaScript>
var flaw=1;
function my_view()
{
if(flaw==1)
{
  document.all.Layer1.style.visibility="";
  my_img.src="images/menu/arrow_up.gif";
  }
else
{
document.all.Layer1.style.visibility="hidden";
my_img.src="images/menu/arrow_down.gif";
  }
  flaw=1-flaw;
}
</script>
<a href="javascript:my_view(id)"><img src="images/menu/arrow_down.gif" name="my_img" border=0></a>
<div id="Layer1" style="visibility: hidden">11111111</div> 
<div id="Layer2" style="visibility: hidden">22222222</div> 
为什么只能显示与隐藏一行信息呀，如何实现隐藏与显示多行呢？

------解决方案--------------------
使用循环啊

Layer1[i]可取单独元素
------解决方案--------------------
用两个表格分别多条数据，来回隐藏就行了//