创建了一个Layer(div)，通过点击按钮来让Layer显示和隐藏。下面的代码有何问题

<html>
<head>
<title>:::::::.....出差信息.....:::::</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<link href="css/style1.css" rel="stylesheet" type="text/css">
<script language="JavaScript">
function ChBgColor(obj)
{
    obj.style.bgColor = "#ffffff";
    
    document.firstpage.style.bgColor = "#aabbcc";
document.bgColor = "#aabbcc";
    
}</script>
<script language="JavaScript" type="text/JavaScript">
<!--
function MM_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);
//-->
</script>
</head><body bgcolor="#A0A0A0">
<br>      <table width="94%" border="0" class="littlegray">
       
        <tr align="center" bgcolor="#CDCDCD" class="littlegray">          <td width="9%">姓名</td>
          <td width="15%">维护处</td>
          <td width="10%">目的地</td>
          <td width="26%">任务</td>
          <td width="10%">出发日期</td>
          <td width="10%">预计天数</td>
          <td width="20%">&nbsp; </td>
        </tr>
 <%do while not rs.eof%>
        <tr align="center"  bgColor = "#FFFFFF" onMouseOut="this.bgColor='#FFFFFF'" onMouseMove="this.bgColor='#33CC00'"> 
          <td height="22">&nbsp;<%=rs("name")%></td>
          <td height="22">&nbsp;<%=rs("filiale")%></td>
          <td height="22">&nbsp;<%=rs("destination")%></td>
          <td height="22">&nbsp;<%=rs("task")%></td>
          <td height="22">&nbsp;<%=rs("leavedate")%></td>
          <td height="22">&nbsp;<%=rs("intenddays")%></td>
          <td height="22"><input name="Submit2" type="button" class="input" onClick="document.all.Layer1.style.visibility = 'visible'" value="详细信息">   //----------------------------------------------
            <div id="Layer1" style="position:absolute; left:687px; top:171px; width:105px; height:173px; z-index:1; background-color: #FF9900; layer-background-color: #FF9900; border: 1px none #000000; visibility: hidden;">hell</div>
//------------------------------------------------------------------</td>
        </tr>
        <%rs.movenext
  loop
  %>
      </table>
  </form>
  </tr>
</table></body>
</html>应该是document.all.Layer1