请高手帮忙把这个下拉菜单的二级竖向菜单也改成横向，谢谢！
代码如下，现在一级菜单是横向，二级菜单是竖向，请帮忙把二级菜单也改成横向的，谢谢！<html>
<HEAD>
<style>
.mtDropdownMenu {
LEFT: -1000px; OVERFLOW: hidden; POSITION: absolute; TOP: -1000px
}
.mtDropdownMenu .content {
POSITION: absolute
}
.mtDropdownMenu .items {
BORDER-RIGHT: #999 0px solid; BORDER-TOP: #999 0px solid; Z-INDEX: 2; LEFT: 0px; BORDER-LEFT: #999 0px solid; BORDER-BOTTOM: #999 0px solid; POSITION: relative; TOP: 0px
}
.mtDropdownMenu .item {
BORDER-RIGHT: medium none; BORDER-TOP: medium none; FONT-SIZE: 9pt; BORDER-BOTTOM-WIDTH: medium; BORDER-LEFT: medium none; CURSOR: hand; COLOR: #000000; TEXT-DECORATION: none; EXT-DECORATION: none
}
.mtDropdownMenu .background {
Z-INDEX: 1; FILTER: alpha(opacity=60); LEFT: 0px; POSITION: absolute; TOP: 0px; moz-opacity: .8
}
.mtDropdownMenu .shadowRight {
Z-INDEX: 3; FILTER: alpha(opacity=30); WIDTH: 0px; POSITION: absolute; TOP: 0px; moz-opacity: .4
}
.mtDropdownMenu .shadowBottom {
Z-INDEX: 1; FILTER: alpha(opacity=30); LEFT: 0px; POSITION: absolute; HEIGHT: 0px; moz-opacity: .4
}
.mtDropdownMenu .hover {
BACKGROUND: #ffffff; COLOR: #000000
}
.mtDropdownMenu .item IMG {
MARGIN-LEFT: 10px
}
</style>
<BODY onload=init();>
<TABLE width=156 border=0 align="center" cellPadding=0 cellSpacing=0>
<TBODY>
<TR>
<TD width=50 align="center" id=menu1>概 况</TD>
<TD width=50 align="center" id=menu2>新 闻</TD>
</TR></TBODY></TABLE>
<SCRIPT language=javascript type=text/javascript>
mtDropDown.spacerGif = "";
mtDropDown.dingbatOn = "";
mtDropDown.dingbatOff = "";
mtDropDown.dingbatSize = 14;
mtDropDown.menuPadding = 0; //菜单表格间距
mtDropDown.itemPadding = 1; //菜单文字间距
mtDropDown.shadowSize = 1; //阴影尺寸
mtDropDown.shadowOffset = 0; //阴影边距
mtDropDown.shadowColor = "#000000";
mtDropDown.shadowPng = "";
mtDropDown.backgroundColor = "#ffffff"; //菜单背景色
mtDropDown.backgroundPng = "";
mtDropDown.hideDelay = 500; //菜单停留时间 (单位：毫秒）
mtDropDown.slideTime = 300; //菜单出现时间
cd="";
//注意鼠标点击色在CSS中改变
mtDropDown.reference = {topLeft:1,topRight:2,bottomLeft:3,bottomRight:4};
mtDropDown.direction = {down:1,right:2};
mtDropDown.registry = [];
mtDropDown._maxZ = 100;
mtDropDown.isSupported = function() {
if (typeof mtDropDown.isSupported.r == "boolean")
return mtDropDown.isSupported.r;
var ua = navigator.userAgent.toLowerCase();
var an = navigator.appName;
var r = false;
if (ua.indexOf("gecko") > -1) r = true;
else if (an == "Microsoft Internet Explorer") {
if (document.getElementById) r = true;
}
mtDropDown.isSupported.r = r;
return r;
}
mtDropDown.initialize = function() {
for (var i = 0, menu = null; menu = this.registry[i]; i++) {
menu.initialize();
}
}
mtDropDown.renderAll = function() {
var aMenuHtml = [];
for (var i = 0, menu = null; menu = this.registry[i]; i++) {
aMenuHtml[i] = menu.toString();
}
document.write(aMenuHtml.join(""));
}
function mtDropDown(oActuator, iDirection, iLeft, iTop, iReferencePoint, parentMenuSet) {
this.addItem = addItem;
this.addMenu = addMenu;
this.toString = toString;
this.initialize = initialize;
this.isOpen = false;
this.show = show;
this.hide = hide;
this.items = [];
this.onactivate = new Function();
this.ondeactivate = new Function();
this.onmouseover = new Function();
this.onqueue = new Function();
this.index = mtDropDown.registry.length;
mtDropDown.registry[this.index] = this;
var id = "mtDropDown" + this.index;
var contentHeight = null;
var contentWidth = null;
var childMenuSet = null;
var animating = false;
var childMenus = [];
var slideAccel = -1;
var elmCache = null;
var ready = false;
var _this = this;
var a = null;
var pos = iDirection == mtDropDown.direction.down ? "top" : "left";
var dim = null;
function addItem(sText, sUrl) {
var item = new mtDropDownItem(sText, sUrl, this);
item._index = this.items.length;
this.items[item._index] = item;
}
function addMenu(oMenuItem) {
if (!oMenuItem.parentMenu == this) throw new Error("这能添加菜单");
if (childMenuSet == null) childMenuSet = new mtDropDownSet(mtDropDown.direction.right, -5, 2, mtDropDown.reference.topRight);
var m = childMenuSet.addMenu(oMenuItem);
childMenus[oMenuItem._index] = m;
m.onmouseover = child_mouseover;
m.ondeactivate = child_deactivate;
m.onqueue = child_queue;
return m;
}
function initialize() {
initCache();
initEvents();
initSize();
ready = true;
}
function show() {
if (ready) {
_this.isOpen = true;
animating = true;
setContainerPos();
elmCache["clip"].style.visibility = "visible";
elmCache["clip"].style.zIndex = mtDropDown._maxZ++;
slideStart();
_this.onactivate();
}
}
function hide() {
if (ready) {
_this.isOpen = false;
animating = true;
for (var i = 0, item = null; item = elmCache.item[i]; i++)
dehighlight(item);
if (childMenuSet) childMenuSet.hide();
slideStart();
_this.ondeactivate();
}
}
function setContainerPos() {
var sub = oActuator.constructor == mtDropDownItem;
var act = sub ? oActuator.parentMenu.elmCache["item"][oActuator._index] : oActuator;
var el = act;
var x = 0;
var y = 0;
var minX = 0;
var maxX = (window.innerWidth ? window.innerWidth : document.body.clientWidth) - parseInt(elmCache["clip"].style.width);
var minY = 0;
var maxY = (window.innerHeight ? window.innerHeight : document.body.clientHeight) - parseInt(elmCache["clip"].style.height);
while (sub ? el.parentNode.className.indexOf("mtDropdownMenu") == -1 : el.offsetParent) {
x += el.offsetLeft;
y += el.offsetTop;
if (el.scrollLeft) x -= el.scrollLeft;
if (el.scrollTop) y -= el.scrollTop;
el = el.offsetParent;
}
if (oActuator.constructor == mtDropDownItem) {
x += parseInt(el.parentNode.style.left);
y += parseInt(el.parentNode.style.top);
}
switch (iReferencePoint) {
case mtDropDown.reference.topLeft:
break;
case mtDropDown.reference.topRight:
x += act.offsetWidth;
break;
case mtDropDown.reference.bottomLeft:
y += act.offsetHeight;
break;
case mtDropDown.reference.bottomRight:
x += act.offsetWidth;
y += act.offsetHeight;
break;
}
x += iLeft;
y += iTop;
x = Math.max(Math.min(x, maxX), minX);
y = Math.max(Math.min(y, maxY), minY);
elmCache["clip"].style.left = x + "px";
elmCache["clip"].style.top = y + "px";
}
function slideStart() {
var x0 = parseInt(elmCache["content"].style[pos]);
var x1 = _this.isOpen ? 0 : -dim;
if (a != null) a.stop();
a = new Accelimation(x0, x1, mtDropDown.slideTime, slideAccel);
a.onframe = slideFrame;
a.onend = slideEnd;
a.start();
}
function slideFrame(x) {
elmCache["content"].style[pos] = x + "px";
}
function slideEnd() {
if (!_this.isOpen) elmCache["clip"].style.visibility = "hidden";
animating = false;
}
function initSize() {
var ow = elmCache["items"].offsetWidth;
var oh = elmCache["items"].offsetHeight;
var ua = navigator.userAgent.toLowerCase();
elmCache["clip"].style.width = ow + mtDropDown.shadowSize + 2 + "px";
elmCache["clip"].style.height = oh + mtDropDown.shadowSize + 2 + "px";
elmCache["content"].style.width = ow + mtDropDown.shadowSize + "px";
elmCache["content"].style.height = oh + mtDropDown.shadowSize + "px";
contentHeight = oh + mtDropDown.shadowSize;
contentWidth = ow + mtDropDown.shadowSize;
dim = iDirection == mtDropDown.direction.down ? contentHeight : contentWidth;
elmCache["content"].style[pos] = -dim - mtDropDown.shadowSize + "px";
elmCache["clip"].style.visibility = "hidden";
if (ua.indexOf("mac") == -1 || ua.indexOf("gecko") > -1) {
elmCache["background"].style.width = ow + "px";
elmCache["background"].style.height = oh + "px";
elmCache["background"].style.backgroundColor = mtDropDown.backgroundColor;
elmCache["shadowRight"].style.left = ow + "px";
elmCache["shadowRight"].style.height = oh - (mtDropDown.shadowOffset - mtDropDown.shadowSize) + "px";
elmCache["shadowRight"].style.backgroundColor = mtDropDown.shadowColor;
elmCache["shadowBottom"].style.top = oh + "px";
elmCache["shadowBottom"].style.width = ow - mtDropDown.shadowOffset + "px";
elmCache["shadowBottom"].style.backgroundColor = mtDropDown.shadowColor;
}
else {
elmCache["background"].firstChild.src = mtDropDown.backgroundPng;
elmCache["background"].firstChild.width = ow;
elmCache["background"].firstChild.height = oh;
elmCache["shadowRight"].firstChild.src = mtDropDown.shadowPng;
elmCache["shadowRight"].style.left = ow + "px";
elmCache["shadowRight"].firstChild.width = mtDropDown.shadowSize;
elmCache["shadowRight"].firstChild.height = oh - (mtDropDown.shadowOffset - mtDropDown.shadowSize);
elmCache["shadowBottom"].firstChild.src = mtDropDown.shadowPng;
elmCache["shadowBottom"].style.top = oh + "px";
elmCache["shadowBottom"].firstChild.height = mtDropDown.shadowSize;
elmCache["shadowBottom"].firstChild.width = ow - mtDropDown.shadowOffset;
}
}
function initCache() {
var menu = document.getElementById(id);
var all = menu.all ? menu.all : menu.getElementsByTagName("*");
elmCache = {};
elmCache["clip"] = menu;
elmCache["item"] = [];
for (var i = 0, elm = null; elm = all[i]; i++) {
switch (elm.className) {
case "items":
case "content":
case "background":
case "shadowRight":
case "shadowBottom":
elmCache[elm.className] = elm;
break;
case "item":
elm._index = elmCache["item"].length;
elmCache["item"][elm._index] = elm;
break;
}
}
_this.elmCache = elmCache;
}
function initEvents() {
for (var i = 0, item = null; item = elmCache.item[i]; i++) {
item.onmouseover = item_mouseover;
item.onmouseout = item_mouseout;
item.onclick = item_click;
}
if (typeof oActuator.tagName != "undefined") {
oActuator.onmouseover = actuator_mouseover;
oActuator.onmouseout = actuator_mouseout;
}
elmCache["content"].onmouseover = content_mouseover;
elmCache["content"].onmouseout = content_mouseout;
}
function highlight(oRow) {
oRow.className = "item hover";
if (childMenus[oRow._index])
oRow.lastChild.firstChild.src = mtDropDown.dingbatOn;
}
function dehighlight(oRow) {
oRow.className = "item";
if (childMenus[oRow._index])
oRow.lastChild.firstChild.src = mtDropDown.dingbatOff;
}
function item_mouseover() {
if (!animating) {
highlight(this);
if (childMenus[this._index])
childMenuSet.showMenu(childMenus[this._index]);
else if (childMenuSet) childMenuSet.hide();
}
}
function item_mouseout() {
if (!animating) {
if (childMenus[this._index])
childMenuSet.hideMenu(childMenus[this._index]);
else
dehighlight(this);
}
}
function item_click() {
if (!animating) {
if (_this.items[this._index].url)
location.href = _this.items[this._index].url;
}
}
function actuator_mouseover() {
parentMenuSet.showMenu(_this);
}
function actuator_mouseout() {
parentMenuSet.hideMenu(_this);
}
function content_mouseover() {
if (!animating) {
parentMenuSet.showMenu(_this);
_this.onmouseover();
}
}
function content_mouseout() {
if (!animating) {
parentMenuSet.hideMenu(_this);
}
}
function child_mouseover() {
if (!animating) {
parentMenuSet.showMenu(_this);
}
}
function child_deactivate() {
for (var i = 0; i < childMenus.length; i++) {
if (childMenus[i] == this) {
dehighlight(elmCache["item"][i]);
break;
}
}
}
function child_queue() {
parentMenuSet.hideMenu(_this);
}
function toString() {
var aHtml = [];
var sClassName = "mtDropdownMenu" + (oActuator.constructor != mtDropDownItem ? " top" : "");
for (var i = 0, item = null; item = this.items[i]; i++) {
aHtml[i] = item.toString(childMenus[i]);
}
return '<div id="' + id + '" class="' + sClassName + '">' +
'<div class="content"><table class="items" cellpadding="0" cellspacing="0" border="0" backgrouncd='+cd+'> ' +
'<tr><td colspan="2"><img src="' + mtDropDown.spacerGif + '" width="1" height="' + mtDropDown.menuPadding + '"></td></tr>' +
aHtml.join('') +
'<tr><td colspan="2"><img src="' + mtDropDown.spacerGif + '" width="1" height="' + mtDropDown.menuPadding + '"></td></tr></table>' +
'<div class="shadowBottom"><img src="' + mtDropDown.spacerGif + '" width="1" height="1"></div>' +
'<div class="shadowRight"><img src="' + mtDropDown.spacerGif + '" width="1" height="1"></div>' +
'<div class="background"><img src="' + mtDropDown.spacerGif + '" width="1" height="1"></div>' +
'</div>'+
'</div>';
}
}
mtDropDownSet.registry = [];
function mtDropDownSet(iDirection, iLeft, iTop, iReferencePoint) {
this.addMenu = addMenu;
this.showMenu = showMenu;
this.hideMenu = hideMenu;
this.hide = hide;
var menus = [];
var _this = this;
var current = null;
this.index = mtDropDownSet.registry.length;
mtDropDownSet.registry[this.index] = this;
function addMenu(oActuator) {
var m = new mtDropDown(oActuator, iDirection, iLeft, iTop, iReferencePoint, this);
menus[menus.length] = m;
return m;
}
function showMenu(oMenu) {
if (oMenu != current) {
if (current != null) hide(current);
current = oMenu;
oMenu.show();
}
else {
cancelHide(oMenu);
}
}
function hideMenu(oMenu) {
if (current == oMenu && oMenu.isOpen) {
if (!oMenu.hideTimer) scheduleHide(oMenu);
}
}
function scheduleHide(oMenu) {
oMenu.onqueue();
oMenu.hideTimer = window.setTimeout("mtDropDownSet.registry[" + _this.index + "].hide(mtDropDown.registry[" + oMenu.index + "])", mtDropDown.hideDelay);
}
function cancelHide(oMenu) {
if (oMenu.hideTimer) {
window.clearTimeout(oMenu.hideTimer);
oMenu.hideTimer = null;
}
}
function hide(oMenu) {
if (!oMenu && current) oMenu = current;
if (oMenu && current == oMenu && oMenu.isOpen) {
cancelHide(oMenu);
current = null;
oMenu.hideTimer = null;
oMenu.hide();
}
}
}
function mtDropDownItem(sText, sUrl, oParent) {
this.toString = toString;
this.text = sText;
this.url = sUrl;
this.parentMenu = oParent;
function toString(bDingbat) {
var sDingbat = bDingbat ? mtDropDown.dingbatOff : mtDropDown.spacerGif;
var iEdgePadding = mtDropDown.itemPadding + mtDropDown.menuPadding;
var sPaddingLeft = "padding:" + mtDropDown.itemPadding + "px; padding-left:" + iEdgePadding + "px;"
var sPaddingRight = "padding:" + mtDropDown.itemPadding + "px; padding-right:" + iEdgePadding + "px;"
return '<tr class="item"><td nowrap style="' + sPaddingLeft + '"><font color=#000000>' +
sText + '</font></td></tr>';
}
}
function Accelimation(from, to, time, zip) {
if (typeof zip == "undefined") zip = 0;
if (typeof unit == "undefined") unit = "px";
this.x0 = from;
this.x1 = to;
this.dt = time;
this.zip = -zip;
this.unit = unit;
this.timer = null;
this.onend = new Function();
this.onframe = new Function();
}
Accelimation.prototype.start = function() {
this.t0 = new Date().getTime();
this.t1 = this.t0 + this.dt;
var dx = this.x1 - this.x0;
this.c1 = this.x0 + ((1 + this.zip) * dx / 3);
this.c2 = this.x0 + ((2 + this.zip) * dx / 3);
Accelimation._add(this);
}
Accelimation.prototype.stop = function() {
Accelimation._remove(this);
}
Accelimation.prototype._paint = function(time) {
if (time < this.t1) {
var elapsed = time - this.t0;
this.onframe(Accelimation._getBezier(elapsed/this.dt,this.x0,this.x1,this.c1,this.c2));
}
else this._end();
}
Accelimation.prototype._end = function() {
Accelimation._remove(this);
this.onframe(this.x1);
this.onend();
}
Accelimation._add = function(o) {
var index = this.instances.length;
this.instances[index] = o;
if (this.instances.length == 1) {
this.timerID = window.setInterval("Accelimation._paintAll()", this.targetRes);
}
}
Accelimation._remove = function(o) {
for (var i = 0; i < this.instances.length; i++) {
if (o == this.instances[i]) {
this.instances = this.instances.slice(0,i).concat( this.instances.slice(i+1) );
break;
}
}
if (this.instances.length == 0) {
window.clearInterval(this.timerID);
this.timerID = null;
}
}
Accelimation._paintAll = function() {
var now = new Date().getTime();
for (var i = 0; i < this.instances.length; i++) {
this.instances[i]._paint(now);
}
}
Accelimation._B1 = function(t) { return t*t*t }
Accelimation._B2 = function(t) { return 3*t*t*(1-t) }
Accelimation._B3 = function(t) { return 3*t*(1-t)*(1-t) }
Accelimation._B4 = function(t) { return (1-t)*(1-t)*(1-t) }
Accelimation._getBezier = function(percent,startPos,endPos,control1,control2) {
return endPos * this._B1(percent) + control2 * this._B2(percent) + control1 * this._B3(percent) + startPos * this._B4(percent);
}
Accelimation.instances = [];
Accelimation.targetRes = 10;
Accelimation.timerID = null;
if (mtDropDown.isSupported()) {
var ms = new mtDropDownSet(mtDropDown.direction.down, 0, 0, mtDropDown.reference.bottomLeft);
var menu1 = ms.addMenu(document.getElementById("menu1"));
menu1.addItem(" <a href=Introduce.aspx>学校简介</a>");
menu1.addItem(" <a href=lead.aspx>历届校领导</a>");
menu1.addItem(" <a href=honour.aspx>校荣誉室</a> ");
menu1.addItem(" <a href=grade.aspx>班级介绍</a>");
menu1.addItem(" <a href=notes.aspx>大事记</a>");
var menu2 = ms.addMenu(document.getElementById("menu2"));
menu2.addItem(" <a href=newS01.aspx>学校简讯</a> ");
menu2.addItem(" <a href=newS03.aspx>理论研究</a>");
menu2.addItem(" <a href=newS04.aspx>媒体报道</a>");
menu2.addItem(" <a href=newS05.aspx>学校要闻</a>");
menu2.addItem(" <a href=newS06.aspx>通知告示</a>");
//
// var menu3 = ms.addMenu(document.getElementById("menu3"));
// menu3.addItem(" <a href=newS11.aspx>创优评先</a> ", "otype.asp?owen1=行业新闻");
// menu3.addItem(" <a href=newS12.aspx>教材建设</a>", "otype.asp?owen1=内部新闻");
// menu3.addItem(" <a href=newS13.aspx>教学计划</a>", "column.aspx");
// menu3.addItem(" <a href=newS14.aspx>课程设置</a> ", "otype.asp?owen1=行业新闻");
// menu3.addItem(" <a href=newS15.aspx>管理制度</a>", "otype.asp?owen1=内部新闻");
// menu3.addItem(" <a href=newS16.aspx>招生简章</a>", "column.aspx");
mtDropDown.renderAll();
}
function init() {
if (mtDropDown.isSupported())
{
mtDropDown.initialize();
}
}
</SCRIPT>
</BODY></HTML>
