中文XML论坛--java高手救我

我学java不久，这是从网站上荡下的代码，作为学习之用，目前我被一个问题困饶了许久，现在狂郁闷中！
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<TITLE> New Document </TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Description" CONTENT="">
<STYLE type=text/css>
#menubar {
BACKGROUND: red; FONT: menu; CURSOR: default; POSITION: relative
}
#menubar .root {
BORDER-RIGHT: red 1px solid; PADDING-RIGHT: 2pt; BORDER-TOP: red 1px solid; PADDING-LEFT: 2pt; BORDER-LEFT: red 1px solid; BORDER-BOTTOM: red 1px solid
}
#menubar TABLE {
BORDER-RIGHT: red 1px solid;BORDER-TOP: red 1px solid; DISPLAY: none;BACKGROUND: rgb(212,208,200); PADDING-BOTTOM: 0pt; MARGIN: -1pt; FONT: menu; BORDER-LEFT: red 1px solid; BORDER-BOTTOM: red 1px solid; POSITION: absolute
}
#menubar TABLE TD {
PADDING-RIGHT: 15pt; PADDING-LEFT: 12pt; PADDING-BOTTOM: 2pt; PADDING-TOP: 2pt
}
#menubar .highlight {
border:black 1.5px solid;background:red; color:white; MARGIN: 0pt;
}
#menubar .disabledhighlight {
BACKGROUND: green; COLOR: gray;position:absolute;
}
#menubar #break {
PADDING-RIGHT: 3pt; PADDING-LEFT: 3pt; PADDING-BOTTOM: 0pt; MARGIN: 0pt; PADDING-TOP: 0pt
}
#menubar .down {padding:1px;border:red 1px solid;background:red}

</STYLE></HEAD>

<BODY ONCLICK="cleanupMenu()">
[color=#FF0000]
<script language=javascript>

//数组名+次序号码

//数组内容第一个值为标题

//"样式名称","字体颜色","名称","连接","目标窗口"

OutBarFolder1=new Array(

"系统功能",

"none","default","新建管理人员","add","_blank",

"none","default","浏览管理人员","none","_blank",

"none","default","修改管理人员资料","none","_blank",

"none","default","更改密码","none","_blank",

"none","default","权限分配","none","none",

"break","default","<hr>","none","none",

"none","default","新建管理人员","add","_blank",

"break","default","<hr>","none","none",

"none","default","备份数据","none","_top",

"none","default","恢复数据","none","_top",

"break","default","<hr>","none","none",

"none","default","更改个人资料","none","_blank",

"none","default","更改个人密码","none","_blank",

"break","default","<hr>","none","none",

"none","default","退出管理系统","none","_top"

);

OutBarFolder2=new Array(

"系统功能",

"none","default","新建管理人员","add","_blank",

"none","default","浏览管理人员","none","_blank",

"none","default","修改管理人员资料","none","_blank",

"none","default","更改密码","none","_blank",

"none","default","权限分配","none","none",

"break","default","<hr>","none","none",

"none","default","新建管理人员","add","_blank",

"break","default","<hr>","none","none",

"none","default","备份数据","none","_top",

"none","default","恢复数据","none","_top",

"break","default","<hr>","none","none",

"none","default","更改个人资料","none","_blank",

"none","default","更改个人密码","none","_blank",

"break","default","<hr>","none","none",

"none","default","退出管理系统","none","_top"

);

OutBarFolder3=new Array(

"系统功能",

"none","default","新建管理人员","add","_blank",

"none","default","浏览管理人员","none","_blank",

"none","default","修改管理人员资料","none","_blank",

"none","default","更改密码","none","_blank",

"none","default","权限分配","none","none",

"break","default","<hr>","none","none",

"none","default","新建管理人员","add","_blank",

"break","default","<hr>","none","none",

"none","default","备份数据","none","_top",

"none","default","恢复数据","none","_top",

"break","default","<hr>","none","none",

"none","default","更改个人资料","none","_blank",

"none","default","更改个人密码","none","_blank",

"break","default","<hr>","none","none",

"none","default","退出管理系统","none","_top"

);

var childActive = null

var menuActive = null

var lastHighlight = null

var active = false

function getReal(el) {

// Find a table cell element in the parent chain */

temp = el

while ((temp!=null) && (temp.tagName!="TABLE") && (temp.className!="root") && (temp.id!="menuBar")) {

if (temp.tagName=="TD")

el = temp

temp = temp.parentElement

}

return el

}

function raiseMenu(el) {

el.style.borderLeft = "1px #08246B solid"

el.style.borderTop = "1px #08246B solid"

el.style.borderRight = "1px #08246B solid"

el.style.borderBottom = "1px #08246B solid"

el.style.background = "#B5BED6"

}

function clearHighlight(el) {

if (el==null) return

el.style.borderRight = "1px lightgrey solid"

el.style.borderBottom = "1px lightgrey solid"

el.style.borderTop = "1px lightgrey solid"

el.style.borderLeft = "1px lightgrey solid"

el.style.background = "orange"

}

function sinkMenu(el) {

el.style.borderRight = "1px white solid"

el.style.borderBottom = "1px white solid"

el.style.borderTop = "1px white solid"

el.style.borderLeft = "1px white solid"

el.style.background = "blue"

}

function menuHandler(menuItem) {

// Write generic menu handlers here!

// Returning true collapses the menu. Returning false does not collapse the menu

return true

}

function getOffsetPos(which,el,tagName) {

var pos = 0 // el["offset" + which]

while (el.tagName!=tagName) {

pos+=el["offset" + which]

el = el.offsetParent

}

return pos

}

function getRootTable(el) {

el = el.offsetParent

if (el.tagName=="TR")

el = el.offsetParent

return el

}

function getElement(el,tagName) {

while ((el!=null) && (el.tagName!=tagName) )

el = el.parentElement

return el

}

function processClick() {

var el = getReal(event.srcElement)

if ((getRootTable(el).id=="menuBar") && (active)) {

cleanupMenu(menuActive)

clearHighlight(menuActive)

active=false

lastHighlight=null

doHighlight(el)

}

else {

if ((el.className=="root") || (!menuHandler(el)))

doMenuDown(el)

else {

if (el._childItem==null)

el._childItem = getChildren(el)

if (el._childItem!=null) return;

if ((el.id!="break") && (el.className!="disabled") && (el.className!="disabledhighlight") && (el.className!="clear")) {

if (menuHandler(el)) {

cleanupMenu(menuActive)

clearHighlight(menuActive)

active=false

lastHighlight=null

}

function getChildren(el) {

var tList = el.children.tags("TABLE")

var i = 0

while ((i<tList.length) && (tList[i].tagName!="TABLE"))

i++

if (i==tList.length)

return null

else

return tList[i]

}

function doMenuDown(el) {

if (el._childItem==null)

el._childItem = getChildren(el)

if ((el._childItem!=null) && (el.className!="disabled") && (el.className!="disabledhighlight")) {

// Performance Optimization - Cache child element

ch = el._childItem

if (ch.style.display=="block") {

removeHighlight(ch.active)

return

}

ch.style.display = "block"

if (el.className=="root") {

ch.style.pixelTop = el.offsetHeight + el.offsetTop + 2

ch.style.pixelLeft = el.offsetLeft + 1

if (ch.style.pixelWidth==0)

ch.style.pixelWidth = ch.rows[0].offsetWidth+50

sinkMenu(el)

active = true

menuActive = el

} else {

childActive = el

ch.style.pixelTop = getOffsetPos("Top",el,"TABLE") -3 // el.offsetTop + el.offsetParent.offsetTop - 3

ch.style.pixelLeft = el.offsetLeft + el.offsetWidth

if (ch.style.pixelWidth==0)

ch.style.pixelWidth = ch.offsetWidth+50

}

function doHighlight(el) {

el = getReal(el)

if ("root"==el.className) {

if ((menuActive!=null) && (menuActive!=el)) {

clearHighlight(menuActive)

}

if (!active) {

raiseMenu(el)

}

else

sinkMenu(el)

if ((active) && (menuActive!=el)) {

cleanupMenu(menuActive)

doMenuDown(el)

}

menuActive = el

lastHighlight=null

}

else {

if (childActive!=null)

if (!childActive.contains(el))

closeMenu(childActive, el)

if (("TD"==el.tagName) && ("clear"!=el.className)) {

var ch = getRootTable(el)

if (ch.active!=null) {

if (ch.active!=el) {

if (ch.active.className=="disabledhighlight")

ch.active.className="disabled"

else

ch.active.className=""

}

ch.active = el

lastHighlight = el

if ((el.className=="disabled") || (el.className=="disabledhighlight") || (el.id=="break"))

el.className = "disabledhighlight"

else {

if (el.id!="break") {

el.className = "highlight"

if (el._childItem==null)

el._childItem = getChildren(el)

if (el._childItem!=null) {

doMenuDown(el)

}

function removeHighlight(el) {

if (el!=null)

if ((el.className=="disabled") || (el.className=="disabledhighlight"))

el.className="disabled"

else

el.className=""

}

function cleanupMenu(el) {

if (el==null) return

for (var i = 0; i < el.all.length; i++) {

var item = el.all[i]

        if ((item.tagName=="TABLE") || (window.pageYOffset))

        item.style.display = ""

removeHighlight(item.active)

        item.active=null


      }

    }

function closeMenu(ch, el) {

var start = ch

while (ch.className!="root") {

ch = ch.parentElement

if (((!ch.contains(el)) && (ch.className!="root"))) {

start=ch

}

(start)

}

function checkMenu() {

if (document.all.menuBar==null) return

if ((!document.all.menuBar.contains(event.srcElement)) && (menuActive!=null)) {

clearHighlight(menuActive)

closeMenu(menuActive)

active = false

menuActive=null

choiceActive = null

}

function doCheckOut() {

var el = event.toElement

if ((!active) && (menuActive!=null) && (!menuActive.contains(el))) {

clearHighlight(menuActive)

menuActive=null

}

function processKey() {

if (active) {

switch (event.keyCode) {

case 13: lastHighlight.click(); break;

case 39: // right

if ((lastHighlight==null) || (lastHighlight._childItem==null)) {

var idx = menuActive.cellIndex

// if (idx==menuActive.offsetParent.cells.length-2)

if (idx==getElement(menuActive,"TR").cells.length-2)

idx = 0

else

idx++

newItem = getElement(menuActive,"TR").cells[idx]

} else

{

newItem = lastHighlight._childItem.rows[0].cells[0]

}

doHighlight(newItem)

break;

case 37: //left

if ((lastHighlight==null) || (getElement(getRootTable(lastHighlight),"TR").id=="menuBar")) {

var idx = menuActive.cellIndex

if (idx==0)

idx = getElement(menuActive,"TR").cells.length-2

else

idx--

newItem = getElement(menuActive,"TR").cells[idx]

} else

{

newItem = getElement(lastHighlight,"TR")

while (newItem.tagName!="TD")

newItem = newItem.parentElement

}

doHighlight(newItem)

break;

case 40: // down

if (lastHighlight==null) {

itemCell = menuActive._childItem

curCell=0

curRow = 0

}

else {

itemCell = getRootTable(lastHighlight)

if (lastHighlight.cellIndex==getElement(lastHighlight,"TR").cells.length-1) {

curCell = 0

curRow = getElement(lastHighlight,"TR").rowIndex+1

if (getElement(lastHighlight,"TR").rowIndex==itemCell.rows.length-1)

curRow = 0

} else {

curCell = lastHighlight.cellIndex+1

curRow = getElement(lastHighlight,"TR").rowIndex

}

doHighlight(itemCell.rows[curRow].cells[curCell])

break;

case 38: // up

if (lastHighlight==null) {

itemCell = menuActive._childItem

curRow = itemCell.rows.length-1

curCell= itemCell.rows[curRow].cells.length-1

}

else {

itemCell = getRootTable(lastHighlight)

if (lastHighlight.cellIndex==0) {

curRow = getElement(lastHighlight,"TR").rowIndex-1

if (curRow==-1)

curRow = itemCell.rows.length-1

curCell= itemCell.rows[curRow].cells.length-1

} else {

curCell = lastHighlight.cellIndex - 1

curRow = getElement(lastHighlight,"TR").rowIndex

}

doHighlight(itemCell.rows[curRow].cells[curCell])

break;

if (lastHighlight==null) {

curCell = menuActive._childItem

curRow = curCell.rows.length-1

}

else {

curCell = getRootTable(lastHighlight)

if (getElement(lastHighlight,"TR").rowIndex==0)

curRow = curCell.rows.length-1

else

curRow = getElement(lastHighlight,"TR").rowIndex-1

}

doHighlight(curCell.rows[curRow].cells[0])

break;

}

function make_menu() {

document.write("<table width='100%' cellpadding='0' cellspacing='0' border='0' style='background=rgb(212,208,200); BACKGROUND: buttonface; BORDER-BOTTOM: buttonshadow 1px solid; BORDER-LEFT: buttonhighlight 1px solid; BORDER-RIGHT: buttonshadow 1px solid; BORDER-TOP: buttonhighlight 1px solid;'>");

document.write("<tr><TD><SPAN class=handbtn></SPAN></TD><td>");

document.write("<TABLE ID=menuBar ONSELECTSTART='return false' onmousemove='cleanupMenu()' ONCLICK='processClick()' ONMOUSEOVER='doHighlight(event.toElement)' ONMOUSEOUT='doCheckOut()' ONKEYDOWN='processKey()'><TR>");

j=1;

while(eval("window.OutBarFolder"+j))

j++;

i=1;

while(i<j)

{

Folder=eval("OutBarFolder"+i)

document.write("<TD NOWRAP CLASS=root>"+Folder[0]+"<TABLE CELLSPACING=0 CELLPADDING=0>");

MakeItems(Folder);

document.write("</TABLE>");

i++;

}

document.write("</TD></TR></TABLE>");

document.write("</td><td width=100% ONMOUSEOVER='processClick()'></td></tr></table>");

}

function MakeItems(Folder)

{

var items=0;

while(Folder[items+1])

items+=5;

items/=5;

for(var i=1;i<items*5;i+=5)

{

if(Folder[i+1]=="BREAK") {

document.write("<TD NOWRAP ID=break><HR></TD>");

}

else {

document.write("<TR><TD NOWRAP>"+Folder[i+1]+"</TD></TR>");

}

document.write("<TR><TD NOWRAP"+((Folder[i+0]=="none")?"":" ID='"+Folder[i+0]+"'")+((Folder[i+3]=="none")?"":" onclick=\"go(1,'"+Folder[i+3]+"')\"")+">"+((Folder[i+1]=="default")?"":"<font color="+Folder[i+1]+">")+Folder[i+2]+((Folder[i+1]=="default")?"":"</font>")+"</TD></TR>");

//alert("<TR><TD NOWRAP "+((Folder[i+0]=="none")?"":"ID='"+Folder[i+0]+"'")+((Folder[i+3]=="none")?"":" onclick=go(1,'"+Folder[i+3]+"')")+">"+((Folder[i+1]=="default")?"":"<font color="+Folder[i+1]+">")+Folder[i+2]+((Folder[i+1]=="default")?"":"</font>")+"</TD></TR>");

}

function go(i,iurl) {

switch (i)

{

case 1 : parent.location=iurl;break; //返回首页

case 2 : top.main.location='login.htm';break; //登录

case 3 : top.main.location='shenqing.htm';break; //注册

case 4 : top.main.location='addnew.asp';break; //增加新贴

case 5 : top.main.location='index1.asp';break; //第一页

case 6 : //上一页

var obj=top.main

var str=obj.location.href;

if(str.indexOf("index1")>0)

obj.location="index1.asp@page="+obj.document.all("ppage").value;

else

obj.location="index1.asp";

break;

case 7 : //下一页

var obj=top.main

var str=obj.location.href;

if(str.indexOf("index1")>0)

obj.location="index1.asp@page="+obj.document.all("npage").value;

else

obj.location="index1.asp";

break;

case 8 : //最后一页

var obj=top.main

var str=obj.location.href;

if(str.indexOf("index1")>0)

obj.location="index1.asp@page="+obj.document.all("epage").value;

else

obj.location="index1.asp";

break;

case 9: top.main.location='editinfo.asp';break;

case 10: top.main.location='quit.asp';break;

case 11: top.main.location='userinfo.asp';break;

case 12:

var newwin=top.open("../../../waha.3322.net/default.htm");

newwin.focus();

break;

}

make_menu();

</script>[/color]

</BODY>
</HTML>
不过目前我想实现在鼠标离开菜单后，或单击非菜单区域，给下拉的菜单引掉，也就是实现象windows菜单的这种事件。
该代码中cleanupMenu函数只是在鼠标移动菜单的其他部分下拉菜单消失，目前我只是想在该函数中增加些代码实现以上事件，清高手赐教，以解郁闷心情，莫大感谢！


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