傻子有难了,大家帮帮我啊,这段代码在IE上可以用,但是火狐上不行,大家帮我看看该怎么改啊
<%@ Page Language="C#" AutoEventWireup="true" CodeFile="aleft.aspx.cs" Inherits="Admin_Admin_left" %>
<!DOCTYPE html PUBLIC "-//W3C//Dtd XHTML 1.0 transitional//EN" "http://www.w3.org/tr/xhtml1/Dtd/xhtml1-transitional.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title></title>
<script language=javascript>
function menuShow(obj,maxh,obj2)
{
   if(obj.style.pixelHeight<maxh)
   {
     obj.style.pixelHeight+=maxh/10;
	obj.filters.alpha.opacity+=20;
	obj2.bgcolor="green";
     if(obj.style.pixelHeight==maxh/10)
	  obj.style.display='block';
	myObj=obj;
	myMaxh=maxh;
	myObj2=obj2;
	setTimeout('menuShow(myObj,myMaxh,myObj2)','5');
   }
}
function menuHide(obj,maxh,obj2)
{
   if(obj.style.pixelHeight>0)
   {
     if(obj.style.pixelHeight==maxh/5)
	  obj.style.display='none';
     obj.style.pixelHeight-=maxh/5;
	obj.filters.alpha.opacity-=10;
	obj2.bgcolor="black";
	myObj=obj;
	myMaxh=maxh
	myObj2=obj2;
	setTimeout('menuHide(myObj,myMaxh,myObj2)','5');
   }
   else
     if(whichContinue)
	  whichContinue.click();
}
function menuChange(obj,maxh,obj2)
{
   if(obj.style.pixelHeight)
   {
     menuHide(obj,maxh,obj2);
	whichOpen='';
	whichcontinue='';
   }
   else
     if(whichOpen)
	{
	  whichContinue=obj2;
       whichOpen.click();
	}
	else
	{
	  menuShow(obj,maxh,obj2);
	  whichOpen=obj2;
	  whichContinue='';
	}
}
</script>
   <script language=javascript>
   var whichOpen="";
   var whichContinue='';
       </script>
</head>
<body leftmargin="0" topmargin="0" bgcolor="#FF9800">
       <table cellSpacing=0 cellPadding=0 width=158 align=center>
         <tbody>
         <tr style="CURSOR: pointer">
             <td class=menu_title id=menuTitle2  
           onmouseover="this.className='menu_title2';"  
           onclick=menuChange(menu2,30,menuTitle2);  
           onmouseout="this.className='menu_title';"  
           bgcolor=blue  
             height=25><span>A</span> </td>
           </tr>
         <tr>
             <td valign="middle" >  
               <div class=sec_menu id=menu2  
             style="DISPLAY: none; FILTER: alpha(Opacity=0); WIDTH: 158px; HEIGHT: 0px">
                 <table  cellSpacing=2 cellPadding=0 width=135 align=center>
                   <tr>  
                     <td style="height: 25px"><a href="#" target="BoardList">ccc</a></td>
                   </tr>
                      <tr>  
                     <td style="height: 25px"><a href="#" target="BoardList">ddd</a></td>
                   </tr>
                 </table>
               </div></td></tr></tbody></table>
       <br>
       <table cellSpacing=0 cellPadding=0 width=158 align=center>