asp.net做动态菜单出现document.all.item1.style.top=parseInt(document.all.item1.style.to）参数无效，代码如下
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="lelfbotton.aspx.cs" Inherits="lelfbotton" %>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<style type="text/css">
.titleStyle{
background-image:url(images/button.gif); color:#ffffff;
font-size:9pt;cursor:hand;
}
.contentStyle{
background-color:#E4E8F3;color:blue;font-size:9pt;
}
.style1 {
color: #999999;
font-family: "宋体", Verdana;
font-size: 9pt;
}
a:link {
color: #003366;
text-decoration: underline;
}
a:visited {
text-decoration: underline;
color: #003366;
}
a:hover {
text-decoration: none;
color: #FF0000;
}
a:active {
text-decoration: underline;
color: #FF0000;
}
body,td,th {
color: #CCCCCC;
}
-->
</style>
</head>
<body>
<script language="JavaScript">
<!--
var layerTop=0; //菜单顶边距
var layerLeft=0; //菜单左边距
var layerWidth=130; //菜单总宽
var titleHeight=25; //标题栏高度
var contentHeight=330; //内容区高度
var stepNo=10; //移动步数，数值越大移动越慢
var itemNo=0;runtimes=0;
document.write('<span id=itemsLayer style="position:absolute;overflow:hidden;left:'+layerLeft+';top:'+layerTop+';width:'+layerWidth+';">');
function addItem(itemTitle,itemContent){
itemHTML='<div id=item'+itemNo+' itemIndex='+itemNo+' style="position:relative;left:0;top:'+(-contentHeight*itemNo)+';width:'+layerWidth+';"><table width=100% cellspacing="0" cellpadding="0">'+
'<tr><td height='+titleHeight+' onclick=changeItem('+itemNo+') class="titleStyle" align=center >'+itemTitle+'</td></tr>'+
'<tr><td height='+contentHeight+' class="contentStyle" valign=top>'+itemContent+'</td></tr></table></div>';
document.write(itemHTML);
itemNo++;}
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