帮我解释一下好吗,最好每句都注解一下

源文件如下:前一段是在menu.js中,你能把前面属性的含义给我说一下吗?
<%@ page contentType="text/html;charset=gb2312"  language="java" %>
<%@page import="hzdq.fdjc.DbConn.*"%>
<%@page import="java.sql.*" %>
<%@page import="java.util.*" %>
<jsp:useBean id="user" scope="page" class="hzdq.fdjc.Admin.user" />
<html>
<head>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script language="JavaScript" src="../include/menu.js">
</script>
<link rel="stylesheet" href="../include/ydl.css" type="text/css">
</head>
<body background="../images/newweb/nei_left_menu_bg.gif">
<%
String num=request.getParameter("num");
if(num==null||num.equals("null"))
num="1";
int v_num=Integer.parseInt(num);
//数据库连接
DBConnectionManager Conn=DBConnectionManager.getInstance();
Connection con=Conn.getConnection();
user.setConnection(con);
String userid=(String)session.getAttribute("userid");
String roleid=(String)session.getAttribute("roleid");
%>
<table  border="0" cellspacing="0" cellpadding="0" >
  <tbody>
  <tr>
   <td background="../images/newweb/nei_left_menu_bg.gif"  width="183">
   <table  border="0" cellspacing="0" cellpadding="0" >
       <tbody>
        <tr>
<td>
<div id="Layer1" style="position:absolute; width:183px; height:150px; z-index:1; left: 0px">
<%
  int count=0;
  Vector vData=new Vector();
              String[] sData=new String[4];
              vData=(Vector)user.getmodule();;//得到模块信息
  for(int i=0;i<vData.size();i++)
  {
   sData=(String[])vData.get(i);
   count++;
   Vector vData1=new Vector();
               String[] sData1=new String[8];
               vData1=(Vector)user.getmodule_sub(sData[0],roleid,userid,"0");
%>
<table cellspacing=0 cellpadding=0 width=183 border="0" background="../images/newweb/nei_menu_6.gif">
                <tbody>
<tr style="CURSOR: hand">
<td valign="bottom" height=20 class=menu_title id=menuTitle<%=count%> onClick=menuChange(menu<%=count%>,120,menuTitle<%=count%>); background="../images/newweb/nei_left_menu<%if(i==0) out.print("1"); else out.print("8");%>.gif" ><%out.print("   "+sData[2]);%>
</tr>
   <tr>
                  <td width="183">
   <%
   if (i==0)
   {
       %>
                    <div class=sec_menu id=menu<%=count%> style="FILTER: alpha(Opacity=100); OVERFLOW: hidden; WIDTH: 183px; HEIGHT: <%=(vData1.size()+1)*20%>px">
                   <%
   }
   else
   {
   %>
<div class=sec_menu id=menu<%=count%> style="DISPLAY: none; FILTER: alpha(Opacity=0); WIDTH: 183px; HEIGHT: 0px">
   <%
   }
   %>
    <%
if (count==1)
{
%>
  <script language=javascript>
   var whichOpen=menuTitle1;
   var whichContinue="";
  </script>
<%
}
%>
   <%for(int j=0;j<vData1.size();j++)
{
sData1=(String[])vData1.get(j);
if(sData1[7]==null)
sData1[7]=",";
if(sData1[5]==null)
sData1[5]=",";%>
<li class="nei_zimenu">
<%if(sData1[7].indexOf(","+roleid+",")!=-1||sData1[5].indexOf(","+userid+",")!=-1||"0".equals(roleid))
   {%>
   <a href="doc_more.jsp?sub_id=<%=sData1[0]%>&sub_name=<%=sData1[4]%>&name=<%=sData1[2]%>" target="main2" class="lan"><%=sData1[4]%></a>
<%}
else
{out.print(sData1[4]);}%>
</li><%}%></ul></td></tr>
</td>
</tbody>
              </table>
    <%}%>
</div>
</td>
</tr>
       </tbody>
   </table>
   </td>
  </tr>
  </tbody>
</table>
</body>
</html>
<%Conn.freeConnection(con);%>
/**
*ÏÔÊ¾ÏÂÀ²Ëµ¥
*@param obj ÏÂÀ²²Ëµ¥
*@param maxh ×î´ó¸ß¶È
*@param obj2 Ö÷²Ëµ¥
*/
function menuShow(obj,maxh,obj2)
{
  if(obj.style.pixelHeight<maxh)
  {
    obj.style.pixelHeight+=maxh/20; //ÏÂÀ²Ëµ¥Öð½¥À¿ª
obj.filters.alpha.opacity+=5;  //ÏÂÀ²Ëµ¥Öð½¥±äÁÁ
obj2.background="../images/newweb/nei_left_menu1.gif"; //ÇÐ»»Ö÷²Ëµ¥µÄ±³¾°Í¼Æ¬
    if(obj.style.pixelHeight==maxh/10)
  obj.style.display='block';  //ÉèÖÃÏÂÀ²Ëµ¥ÎªÏÔÊ¾×´Ì¬
myObj=obj;
myMaxh=maxh;
myObj2=obj2;
setTimeout('menuShow(myObj,myMaxh,myObj2)','5'); //Ã¿¸ô5ºÁÃëÖ´ÐÐÒ»´ÎmenuShowº¯Êý£¬ÖÆÔìÏÂÀ²Ëµ¥½¥±äµÄÐ§¹û
  }
}/**
*Òþ²ØÏÂÀ²Ëµ¥
*@param obj ÏÂÀ²²Ëµ¥
*@param maxh ×î´ó¸ß¶È
*@param obj2 Ö÷²Ëµ¥
*/
function menuHide(obj,maxh,obj2)
{
  if(obj.style.pixelHeight>0)
  {
    if(obj.style.pixelHeight==maxh/20)
  obj.style.display='none';  //ÉèÖÃÏÂÀ²Ëµ¥Îª²»ÏÔÊ¾×´Ì¬
    obj.style.pixelHeight-=maxh/20; //ÏÂÀ²Ëµ¥Öð½¥…§Â£
obj.filters.alpha.opacity-=5;  //ÏÂÀ²Ëµ¥Öð½¥±ä°µ
obj2.background="../images/newweb/nei_left_menu8.gif";  //ÇÐ»»Ö÷²Ëµ¥µÄ±³¾°Í¼Æ¬
myObj=obj;
myMaxh=maxh
myObj2=obj2;
setTimeout('menuHide(myObj,myMaxh,myObj2)','5');  //Ã¿¸ô5ºÁÃëÖ´ÐÐÒ»´ÎmenuShowº¯Êý£¬ÖÆÔìÏÂÀ²Ëµ¥½¥±äµÄÐ§¹û
  }
  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='';
}
}
/**
*显示下拉菜单
*@param obj 下拉菜单
*@param maxh 最大高度
*@param obj2 主菜单
*/
function menuShow(obj,maxh,obj2)
{
  if(obj.style.pixelHeight<maxh)
  {
    obj.style.pixelHeight+=maxh/20; //下拉菜单逐渐弹出
obj.filters.alpha.opacity+=5;  //下拉菜单逐渐变亮
obj2.background="../images/newweb/nei_left_menu1.gif"; //切换主菜单的背景图片
    if(obj.style.pixelHeight==maxh/10)
  obj.style.display='block';  //设置下拉菜单为可显示状态
myObj=obj;
myMaxh=maxh;
myObj2=obj2;
setTimeout('menuShow(myObj,myMaxh,myObj2)','5'); //每隔5毫秒执行一次menuShow函数，制造渐变效果
  }
}/**
*隐藏下拉菜单
*@param obj 下拉菜单
*@param maxh 最大高度
*@param obj2 主菜单
*/
function menuHide(obj,maxh,obj2)
{
  if(obj.style.pixelHeight>0)
  {
    if(obj.style.pixelHeight==maxh/20)
  obj.style.display='none';  //设置下拉菜单为不可显示状态
    obj.style.pixelHeight-=maxh/20; //下拉菜单逐渐収拢
obj.filters.alpha.opacity-=5;  //下拉菜单逐渐变暗
obj2.background="../images/newweb/nei_left_menu8.gif";  //切换主菜单背景图片
myObj=obj;
myMaxh=maxh
myObj2=obj2;
setTimeout('menuHide(myObj,myMaxh,myObj2)','5');  //每隔5毫秒执行一次menuShow函数，制造渐变效果
  }
  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='';
}
}

调试易

帮我解释一下好吗,最好每句都注解一下

解决方案 »