关于javascript的问题 高手进
发布网友
发布时间：2022-04-24 12:02
共2个回答
热心网友
时间：2022-04-24 13:31
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<title>非常棒的绿色下拉透明菜单</title>
</head>
<body>
<script language="JavaScript">
var mmenus = new Array();
var misShow = new Boolean();
misShow=false;
var misdown = new Boolean();
misdown=false;
var mnumberofsub=0;
var musestatus=false;
var mpopTimer = 0;
mmenucolor='#89CB10';mfontcolor='MenuText';mmenuoutcolor='#ADEF34';mmenuincolor='#B5E74E';mmenuoutbordercolor='#ECFA3A';mmenuinbordercolor='#5A2614';mmidoutcolor='#A9DA1D';mmidincolor='#799310';mmenuovercolor='#004080';mitemedge='0';msubedge='1';mmenuunitwidth=66;mmenuitemwidth=140;mmenuheight=25;mmenuwidth='100%';mmenuadjust=0;mmenuadjustV=0;mfonts='font-family: 宋体; font-size: 9pt; color: MenuText; ';mcursor='hand';
var swipeSteps = 4;
var swipemsec = 25;
var swipeArray = new Array();
function swipe(el, dir, steps, msec) {
if (steps == null) steps = swipeSteps;
if (msec == null) msec = swipemsec;
if (el.swipeIndex == null)
el.swipeIndex = swipeArray.length;
if (el.swipeTimer != null)
window.clearTimeout(el.swipeTimer);
swipeArray[el.swipeIndex] = el;
el.style.clip = "rect(-99999, 99999, 99999, -99999)";
if (el.swipeCounter == null || el.swipeCounter == 0) {
el.orgLeft = el.offsetLeft;
el.orgTop = el.offsetTop;
el.orgWidth = el.offsetWidth;
el.orgHeight = el.offsetHeight;
}
el.swipeCounter = steps;
el.style.clip = "rect(0,0,0,0)";
window.setTimeout("repeat(" + dir + "," + el.swipeIndex + "," + steps + "," + msec + ")", msec);
}
function repeat(dir, index, steps, msec) {
el = swipeArray[index];
var left = el.orgLeft;
var top = el.orgTop;
var width = el.orgWidth;
var height = el.orgHeight;
if (el.swipeCounter == 0) {
el.style.clip = "rect(-99999, 99999, 99999, -99999)";
return;
}
else {
el.swipeCounter--;
el.style.visibility = "visible";
switch (dir) {
case 2:
el.style.clip = "rect(" + height*el.swipeCounter/steps + "," + width + "," + height + "," + 0 + ")";
el.style.top = top - height*el.swipeCounter/steps;
break;
case 8:
el.style.clip = "rect(" + 0 + "," + width + "," + height*(steps-el.swipeCounter)/steps + "," + 0 + ")";
el.style.top = top + height*el.swipeCounter/steps;
break;
case 6:
el.style.clip = "rect(" + 0 + "," + width + "," + height + "," + width*(el.swipeCounter)/steps + ")";
el.style.left = left - width*el.swipeCounter/steps;
break;
case 4:
el.style.clip = "rect(" + 0 + "," + width*(swipeSteps - el.swipeCounter)/steps + "," + height + "," + 0 + ")";
el.style.left = left + width*el.swipeCounter/steps;
break;
}
el.swipeTimer = window.setTimeout("repeat(" + dir + "," + index + "," + steps + "," + msec + ")", msec);
}
}
var mtmpleft="";
var mtmptop="";
function hideSwipe(el) {
window.clearTimeout(el.swipeTimer);
el.style.visibility = "hidden";
el.style.clip = "rect(-99999, 99999, 99999, -99999)";
el.swipeCounter = 0;
if(mtmpleft!="")el.style.left = mtmpleft;
if(mtmptop!="")el.style.top = mtmptop;
}
function stoperror(){
return true;
}
window.onerror=stoperror;
function mpopOut() {
mpopTimer = setTimeout('mallhide()', 500);
}
function getReal(el, type, value) {
temp = el;
while ((temp != null) && (temp.tagName != "BODY")) {
if (eval("temp." + type) == value) {
el = temp;
return el;
}
temp = temp.parentElement;
}
return el;
}
function mMenuRegister(menu)
{
mmenus[mmenus.length] = menu
return (mmenus.length - 1)
}
function mMenuItem(caption,command,target,isline,statustxt,level,img,sizex,sizey,pos){
this.items = new Array();
this.caption=caption;
this.command=command;
this.target=target;
this.isline=isline;
this.statustxt=statustxt;
if(level!=null){mnumberofsub++;
this.hasc=mnumberofsub;}
this.level=level;
this.img=img;
this.sizex=sizex;
this.sizey=sizey;
this.pos=pos;
}
function mMenu(caption,command,target,img,sizex,sizey,pos){
this.items = new Array();
this.caption=caption;
this.command=command;
this.target=target;
this.img=img;
this.sizex=sizex;
this.sizey=sizey;
this.pos=pos;
this.id=mMenuRegister(this);
}
function mMenuAddItem(item)
{
this.items[this.items.length] = item
item.parent = this.id;
this.children=true;
}
mMenu.prototype.addItem = mMenuAddItem;
mMenuItem.prototype.addsubItem = mMenuAddItem;
function mtoout(src){
src.style.borderLeftColor=mmenuoutbordercolor;
src.style.borderRightColor=mmenuinbordercolor;
src.style.borderTopColor=mmenuoutbordercolor;
src.style.borderBottomColor=mmenuinbordercolor;
src.style.backgroundColor=mmenuoutcolor;
src.style.color=mmenuovercolor;
}
function mtoin(src){
src.style.borderLeftColor=mmenuinbordercolor;
src.style.borderRightColor=mmenuoutbordercolor;
src.style.borderTopColor=mmenuinbordercolor;
src.style.borderBottomColor=mmenuoutbordercolor;
src.style.backgroundColor=mmenuincolor;
src.style.color=mmenuovercolor;
}
function mnochange(src){
src.style.borderLeftColor=mmenucolor;
src.style.borderRightColor=mmenucolor;
src.style.borderTopColor=mmenucolor;
src.style.borderBottomColor=mmenucolor;
src.style.backgroundColor='';
src.style.color=mfontcolor;
}
function mallhide(){
for(var nummenu=0;nummenu<mmenus.length;nummenu++){
var themenu=document.all['mMenu'+nummenu]
var themenudiv=document.all['mmenudiv'+nummenu]
mnochange(themenu);
mmenuhide(themenudiv);
}
for(nummenu=1;nummenu<=mnumberofsub;nummenu++){
var thesub=document.all['msubmenudiv'+nummenu]
msubmenuhide(thesub);
mnochange(document.all['mp'+nummenu]);
document.all["mitem"+nummenu].style.color=mfontcolor;
}
}
function mmenuhide(menuid){
menuid.style.filter='Alpha(Opacity=100)';
hideSwipe(menuid);
misShow=false;
}
function msubmenuhide(menuid){
menuid.style.filter='Alpha(Opacity=100)';
menuid.style.visibility='hidden';
}
function mmenushow(menuid,pid){
menuid.style.filter='Alpha(Opacity=80)';
menuid.style.left=mposflag.offsetLeft+pid.offsetLeft+mmenuadjust;menuid.style.top=mposflag.offsetTop+mmenutable.offsetHeight+mmenuadjustV;
if(mmenuitemwidth+parseInt(menuid.style.left)>document.body.clientWidth+document.body.scrollLeft)
menuid.style.left=document.body.clientWidth+document.body.scrollLeft-mmenuitemwidth;
mtmpleft=menuid.style.left;mtmptop=menuid.style.top;swipe(menuid,2,4);
misShow=true;
}
function mshowsubmenu(menuid,pid,rid){
menuid.style.filter='Alpha(Opacity=80)';
menuid.style.left=pid.offsetWidth+rid.offsetLeft;
menuid.style.top=pid.offsetTop+rid.offsetTop-3;
if(mmenuitemwidth+parseInt(menuid.style.left)>document.body.clientWidth+document.body.scrollLeft)
menuid.style.left=document.body.clientWidth+document.body.scrollLeft-mmenuitemwidth;
menuid.style.visibility='visible';
}
function mmenu_over(menuid,x){
toel = getReal(window.event.toElement, "className", "coolButton");
fromel = getReal(window.event.fromElement, "className", "coolButton");
if (toel == fromel) return;
if(x<0){
misShow = false;
mallhide();
mtoout(eval("mMenu"+x));
}else{
mallhide();
mtoin(eval("mMenu"+x));
mmenushow(menuid,eval("mMenu"+x));
}
clearTimeout(mpopTimer);
}
function mmenu_out(x){
toel = getReal(window.event.toElement, "className", "coolButton");
fromel = getReal(window.event.fromElement, "className", "coolButton");
if (toel == fromel) return;
if (misShow){
mtoin(eval("mMenu"+x));
}else{
mnochange(eval("mMenu"+x));
}
mpopOut()
}
function mmenu_down(menuid,x){
if(misShow){
mmenuhide(menuid);
mtoout(eval("mMenu"+x));
}
else{
mtoin(eval("mMenu"+x));
mmenushow(menuid,eval("mMenu"+x));
misdown=true;
}
}
function mmenu_up(){
misdown=false;
}
function mmenuitem_over(menuid,item,x,j,i){
toel = getReal(window.event.toElement, "className", "coolButton");
fromel = getReal(window.event.fromElement, "className", "coolButton");
if (toel == fromel) return;
srcel = getReal(window.event.srcElement, "className", "coolButton");
for(nummenu=1;nummenu<=mnumberofsub;nummenu++){
var thesub=document.all['msubmenudiv'+nummenu]
if(!(menuid==thesub||menuid.style.tag>=thesub.style.tag)){
msubmenuhide(thesub);
mnochange(document.all['mp'+nummenu]);
document.all["mitem"+nummenu].style.color=mfontcolor;
}
}
if(item)document.all["mitem"+item].style.color=mmenuovercolor;
if(misdown||item){
mtoin(srcel);
}
else{
mtoout(srcel);
}
if(x==-1)mthestatus=eval("msub"+j).items[i].statustxt;
if(j==-1)mthestatus=mmenus[x].items[i].statustxt;
if(mthestatus!=""){
musestatus=true;
window.status=mthestatus;
}
clearTimeout(mpopTimer);
}
function mmenuitem_out(hassub){
toel = getReal(window.event.toElement, "className", "coolButton");
fromel = getReal(window.event.fromElement, "className", "coolButton");
if (toel == fromel) return;
srcel = getReal(window.event.srcElement, "className", "coolButton");
if(!hassub)mnochange(srcel);
if(musestatus)window.status="";
mpopOut()
}
function mmenuitem_down(){
srcel = getReal(window.event.srcElement, "className", "coolButton");
mtoin(srcel)
misdown=true;
}
function mmenuitem_up(){
srcel = getReal(window.event.srcElement, "className", "coolButton");
mtoout(srcel)
misdown=false;
}
function mexec3(j,i){
var cmd;
if(eval("msub"+j).items[i].target=="blank"){
cmd = "window.open('"+eval("msub"+j).items[i].command+"')";
}else{
cmd = eval("msub"+j).items[i].target+".location=\""+eval("msub"+j).items[i].command+"\"";
}
eval(cmd);
}
function mexec2(x){
var cmd;
if(mmenus[x].target=="blank"){
cmd = "window.open('"+mmenus[x].command+"')";
}else{
cmd = mmenus[x].target+".location=\""+mmenus[x].command+"\"";
}
eval(cmd);
}
function mexec(x,i){
var cmd;
if(mmenus[x].items[i].target=="blank"){
cmd = "window.open('"+mmenus[x].items[i].command+"')";
}else{
cmd = mmenus[x].items[i].target+".location=\""+mmenus[x].items[i].command+"\"";
}
eval(cmd);
}
function mbody_click(){
if (misShow){
srcel = getReal(window.event.srcElement, "className", "coolButton");
for(var x=0;x<=mmenus.length;x++){
if(srcel.id=="mMenu"+x)
return;
}
for(x=1;x<=mnumberofsub;x++){
if(srcel.id=="mp"+x)
return;
}
mallhide();
}
}
document.onclick=mbody_click;
function mwritetodocument(){
var mwb=1;
var stringx='<div id="mposflag" style="position:absolute;"></div><table id=mmenutable border=0 cellpadding=3 cellspacing=2 width='+mmenuwidth+' height='+mmenuheight+' bgcolor='+mmenucolor+
' onselectstart="event.returnValue=false"'+
' style="filter:Alpha(Opacity=80);cursor:'+mcursor+';'+mfonts+
' border-left: '+mwb+'px solid '+mmenuoutbordercolor+';'+
' border-right: '+mwb+'px solid '+mmenuinbordercolor+'; '+
'border-top: '+mwb+'px solid '+mmenuoutbordercolor+'; '+
'border-bottom: '+mwb+'px solid '+mmenuinbordercolor+'; padding:0px"><tr>'
for(var x=0;x<mmenus.length;x++){
var thismenu=mmenus[x];
var imgsize="";
if(thismenu.sizex!="0"||thismenu.sizey!="0")imgsize=" width="+thismenu.sizex+" height="+thismenu.sizey;
var ifspace="";
if(thismenu.caption!="")ifspace=" ";
stringx += "<td nowrap class=coolButton id=mMenu"+x+" style='border: "+mitemedge+"px solid "+mmenucolor+
"' width="+mmenuunitwidth+"px onmouseover=mmenu_over(mmenudiv"+x+
","+x+") onmouseout=mmenu_out("+x+
") onmousedown=mmenu_down(mmenudiv"+x+","+x+")";
if(thismenu.command!=""){
stringx += " onmouseup=mmenu_up();mexec2("+x+");";
}else{
stringx += " onmouseup=mmenu_up()";
}
if(thismenu.pos=="0"){
stringx += " align=center><img align=absmiddle src='"+thismenu.img+"'"+imgsize+">"+ifspace+thismenu.caption+"</td>";
}else if(thismenu.pos=="1"){
stringx += " align=center>"+thismenu.caption+ifspace+"<img align=absmiddle src='"+thismenu.img+"'"+imgsize+"></td>";
}else if(thismenu.pos=="2"){
stringx += " align=center background='"+thismenu.img+"'> "+thismenu.caption+" </td>";
}else{
stringx += " align=center> "+thismenu.caption+" </td>";
}
stringx += "";
}
stringx+="<td width=*> </td></tr></table>";
for(var x=0;x<mmenus.length;x++){
thismenu=mmenus[x];
if(x<0){
stringx+='<div id=mmenudiv'+x+' style="visiable:none"></div>';
}else{
stringx+='<div id=mmenudiv'+x+
' style="filter:Alpha(Opacity=80);cursor:'+mcursor+';position:absolute;'+
'width:'+mmenuitemwidth+'px; z-index:'+(x+100);
if(mmenuinbordercolor!=mmenuoutbordercolor&&msubedge=="0"){
stringx+=';border-left: 1px solid '+mmidoutcolor+
';border-top: 1px solid '+mmidoutcolor;}
stringx+=';border-right: 1px solid '+mmenuinbordercolor+
';border-bottom: 1px solid '+mmenuinbordercolor+';visibility:hidden" onselectstart="event.returnValue=false">\n'+
'<table width="100%" border="0" height="100%" align="center" cellpadding="0" cellspacing="2" '+
'style="'+mfonts+' border-left: 1px solid '+mmenuoutbordercolor;
if(mmenuinbordercolor!=mmenuoutbordercolor&&msubedge=="0"){
stringx+=';border-right: 1px solid '+mmidincolor+
';border-bottom: 1px solid '+mmidincolor;}
stringx+=';border-top: 1px solid '+mmenuoutbordercolor+
';padding: 4px" bgcolor='+mmenucolor+'>\n'
for(var i=0;i<thismenu.items.length;i++){
var thismenuitem=thismenu.items[i];
var imgsize="";
if(thismenuitem.sizex!="0"||thismenuitem.sizey!="0")imgsize=" width="+thismenuitem.sizex+" height="+thismenuitem.sizey;
var ifspace="";
if(thismenu.caption!="")ifspace=" ";
if(thismenuitem.hasc!=null){
stringx += "<tr><td id=mp"+thismenuitem.hasc+" class=coolButton style='border: "+mitemedge+"px solid "+mmenucolor+
"' width=100% onmouseout=mmenuitem_out(true) onmouseover=\"mmenuitem_over(mmenudiv"+x+
",'"+thismenuitem.hasc+"',"+x+",-1,"+i+");mshowsubmenu(msubmenudiv"+thismenuitem.hasc+",mp"+thismenuitem.hasc+",mmenudiv"+x+");\""+
"><table id=mitem"+thismenuitem.hasc+" cellspacing='0' cellpadding='0' border='0' width='100%' style='"+mfonts+"'><tr><td ";
if(thismenuitem.pos=="0"){
stringx += "><img align=absmiddle src='"+thismenuitem.img+"'"+imgsize+">"+ifspace+thismenuitem.caption+"</td><td";
}else if(thismenuitem.pos=="1"){
stringx += ">"+thismenuitem.caption+ifspace+"<img align=absmiddle src='"+thismenuitem.img+"'"+imgsize+"></td><td";
}else if(thismenuitem.pos=="2"){
stringx += "background='"+thismenuitem.img+"'>"+thismenuitem.caption+"</td><td background='"+thismenuitem.img+"'";
}else{
stringx += ">"+thismenuitem.caption+"</td><td";
}
stringx += " align=right width='1'><font face='Webdings' style='font-size: 6pt'>4</font></td></tr></table></td></tr>\n";
}else if(!thismenuitem.isline){
stringx += "<tr><td class=coolButton style='border: "+mitemedge+"px solid "+mmenucolor+
"' width=100% height=15px onmouseover=\"mmenuitem_over(mmenudiv"+x+
",false,"+x+",-1,"+i+");\" onmouseout=mmenuitem_out() onmousedown=mmenuitem_down() onmouseup=";
stringx += "mmenuitem_up();mexec("+x+","+i+"); ";
if(thismenuitem.pos=="0"){
stringx += "><img align=absmiddle src='"+thismenuitem.img+"'"+imgsize+">"+ifspace+thismenuitem.caption+"</td></tr>";
}else if(thismenuitem.pos=="1"){
stringx += ">"+thismenuitem.caption+ifspace+"<img align=absmiddle src='"+thismenuitem.img+"'"+imgsize+"></td></tr>";
}else if(thismenuitem.pos=="2"){
stringx += "background='"+thismenuitem.img+"'>"+thismenuitem.caption+"</td></tr>";
}else{
stringx += ">"+thismenuitem.caption+"</td></tr>";
}
}else{
stringx+='<tr><td height="1" background="/images/hr.gif" onmousemove="clearTimeout(mpopTimer);"><img height="1" width="1" src="none.gif" border="0"></td></tr>\n';
}
}stringx+='</table>\n</div>'
}
}
for(var j=1;j<=mnumberofsub;j++){
thisitem=eval("msub"+j);
stringx+='<div id=msubmenudiv'+j+
' style="filter:Alpha(Opacity=80);tag:'+thisitem.level+';cursor:'+mcursor+';position:absolute;'+
'width:'+mmenuitemwidth+'px; z-index:'+(j+200);
if(mmenuinbordercolor!=mmenuoutbordercolor&&msubedge=="0"){
stringx+=';border-left: 1px solid '+mmidoutcolor+
';border-top: 1px solid '+mmidoutcolor;}
stringx+=';border-right: 1px solid '+mmenuinbordercolor+
';border-bottom: 1px solid '+mmenuinbordercolor+';visibility:hidden" onselectstart="event.returnValue=false">\n'+
'<table width="100%" border="0" height="100%" align="center" cellpadding="0" cellspacing="2" '+
'style="'+mfonts+' border-left: 1px solid '+mmenuoutbordercolor;
if(mmenuinbordercolor!=mmenuoutbordercolor&&msubedge=="0"){
stringx+=';border-right: 1px solid '+mmidincolor+
';border-bottom: 1px solid '+mmidincolor;}
stringx+=';border-top: 1px solid '+mmenuoutbordercolor+
';padding: 4px" bgcolor='+mmenucolor+'>\n'
for(var i=0;i<thisitem.items.length;i++){
var thismenuitem=thisitem.items[i];
var imgsize="";
if(thismenuitem.sizex!="0"||thismenuitem.sizey!="0")imgsize=" width="+thismenuitem.sizex+" height="+thismenuitem.sizey;
var ifspace="";
if(thismenu.caption!="")ifspace=" ";
热心网友
时间：2022-04-24 14:49
这里给你另一种菜单的例子：
<html>
<head>
<title>Untitled Document</title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<script language="JavaScript">
var currTimerlinePoint = 0;
var totalTimerlineFrames = 2;
var timerlineTimer;
var leftLine = 50;
var timerIn;
var timerOut;
var timerlineArray = new Array();
timerlineArray[0]='';
timerlineArray[1]='menuItemOut()';
function runTimerline()
{
//if (totalTimerlineFrames > currTimerlinePoint)
// {
// eval( timerlineArray[currTimerlinePoint]);
// currTimerlinePoint ++;
// }
//else {currTimerlinePoint = 0; clearTimeout(window.timerlineTimer); return false;}
//window.timerlineTimer = setTimeout('runTimerline()',1000);
window.timerlineTimer = setTimeout('menuItemOut()',500);
}
function stopTimerline()
{
clearTimeout(window.timerlineTimer);
//currTimerlinePoint = 0;
}
function menuItemIn()
{
if( leftLine != 150)
{
item11.style.pixelLeft += 20; item11.filters.alpha.opacity += 20;
item12.style.pixelLeft -= 20; item12.filters.alpha.opacity += 20;
item13.style.pixelLeft += 20; item13.filters.alpha.opacity += 20;
item14.style.pixelLeft -= 20; item14.filters.alpha.opacity += 20;
item15.style.pixelLeft += 20; item15.filters.alpha.opacity += 20;
item16.style.pixelLeft -= 20; item16.filters.alpha.opacity += 20;
item17.style.pixelLeft += 20; item17.filters.alpha.opacity += 20;
item18.style.pixelLeft -= 20; item18.filters.alpha.opacity += 20;
item19.style.pixelLeft += 20; item19.filters.alpha.opacity += 20;
item20.style.pixelLeft -= 20; item20.filters.alpha.opacity += 20;
leftLine += 20;
}
else
{
clearTimeout(window.timerIn);
return false;
}
timerIn=window.setTimeout('menuItemIn()',1);
}
function menuItemOut()
{
clearTimeout(window.timerIn);
if (leftLine != 50)
{
item11.style.pixelLeft -= 20; item11.filters.alpha.opacity -= 20;
item12.style.pixelLeft += 20; item12.filters.alpha.opacity -= 20;
item13.style.pixelLeft -= 20; item13.filters.alpha.opacity -= 20;
item14.style.pixelLeft += 20; item14.filters.alpha.opacity -= 20;
item15.style.pixelLeft -= 20; item15.filters.alpha.opacity -= 20;
item16.style.pixelLeft += 20; item16.filters.alpha.opacity -= 20;
item17.style.pixelLeft -= 20; item17.filters.alpha.opacity -= 20;
item18.style.pixelLeft += 20; item18.filters.alpha.opacity -= 20;
item19.style.pixelLeft -= 20; item19.filters.alpha.opacity -= 20;
item20.style.pixelLeft += 20; item20.filters.alpha.opacity -= 20;
leftLine -= 20;
}
else
{
clearTimeout(window.timerOut);
return false;
}
timerOut=window.setTimeout("menuItemOut()",1);
}
</script>
</head>
<body bgcolor="#FFFFFF" text="#000000">
<div style="position:absolute; left:0px; top:-30px"><div align=center id="menu01" style="position:absolute; left:150px; top:33px; width:100px; height:19px; z-index:1; background-color: #000099; layer-background-color: #000099; border: 1px none #000000;padding-top:3;cursor:hand;font-size:9pt" onmouseover='stopTimerline();menuItemIn()' onmouseout='runTimerline()'><font color=white>主菜单</div>
<div align=center id="item11" style="position:absolute; left:50px; top:55px; width:99px; height:19px; z-index:2; background-color: #0099CC; layer-background-color: #0099CC; border: 1px none #000000; filter:alpha(opacity=0);padding-top:4;cursor:hand;font-size:9pt"
onmouseover="this.style.backgroundColor= '#006699';stopTimerline()"
onmouseout="this.style.backgroundColor= '#0099cc';runTimerline()">菜单项一</div>
<div align=center id="item12" style="position:absolute; left:250px; top:77px; width:99px; height:19px; z-index:3; background-color: #0099CC; layer-background-color: #0099CC; border: 1px none #000000; filter:alpha(opacity=0);padding-top:3;cursor:hand;font-size:9pt"
onmouseover="this.style.backgroundColor= '#006699';stopTimerline()"
onmouseout="this.style.backgroundColor= '#0099cc';runTimerline()">菜单项二</div>
<div align=center id="item13" style="position:absolute; left:50px; top:99px; width:99px; height:19px; z-index:4; background-color: #0099CC; layer-background-color: #0099CC; border: 1px none #000000; filter:alpha(opacity=0);padding-top:3;cursor:hand;font-size:9pt"
onmouseover="this.style.backgroundColor= '#006699';stopTimerline()"
onmouseout="this.style.backgroundColor= '#0099cc';runTimerline()">菜单项三</div>
<div align=center id="item14" style="position:absolute; left:250px; top:121px; width:99px; height:19px; z-index:5; background-color: #0099CC; layer-background-color: #0099CC; border: 1px none #000000; filter:alpha(opacity=0);padding-top:3;cursor:hand;font-size:9pt"
onmouseover="this.style.backgroundColor= '#006699';stopTimerline()"
onmouseout="this.style.backgroundColor= '#0099cc';runTimerline()">菜单项四</div>
<div align=center id="item15" style="position:absolute; left:50px; top:143px; width:99px; height:19px; z-index:6; background-color: #0099CC; layer-background-color: #0099CC; border: 1px none #000000; filter:alpha(opacity=0);padding-top:3;cursor:hand;font-size:9pt"
onmouseover="this.style.backgroundColor= '#006699';stopTimerline()"
onmouseout="this.style.backgroundColor= '#0099cc';runTimerline()">菜单项五</div>
<div align=center id="item16" style="position:absolute; left:250px; top:165px; width:99px; height:19px; z-index:6; background-color: #0099CC; layer-background-color: #0099CC; border: 1px none #000000; filter:alpha(opacity=0);padding-top:3;cursor:hand;font-size:9pt"
onmouseover="this.style.backgroundColor= '#006699';stopTimerline()"
onmouseout="this.style.backgroundColor= '#0099cc';runTimerline()">菜单项六</div>
<div align=center id="item17" style="position:absolute; left:50px; top:187px; width:99px; height:19px; z-index:6; background-color: #0099CC; layer-background-color: #0099CC; border: 1px none #000000; filter:alpha(opacity=0);padding-top:3;cursor:hand;font-size:9pt"
onmouseover="this.style.backgroundColor= '#006699';stopTimerline()"
onmouseout="this.style.backgroundColor= '#0099cc';runTimerline()">菜单项七</div>
<div align=center id="item18" style="position:absolute; left:250px; top:209px; width:99px; height:19px; z-index:6; background-color: #0099CC; layer-background-color: #0099CC; border: 1px none #000000; filter:alpha(opacity=0);padding-top:3;cursor:hand;font-size:9pt"
onmouseover="this.style.backgroundColor= '#006699';stopTimerline()"
onmouseout="this.style.backgroundColor= '#0099cc';runTimerline()">菜单项八</div>
<div align=center id="item19" style="position:absolute; left:50px; top:231px; width:99px; height:19px; z-index:6; background-color: #0099CC; layer-background-color: #0099CC; border: 1px none #000000; filter:alpha(opacity=0);padding-top:3;cursor:hand;font-size:9pt"
onmouseover="this.style.backgroundColor= '#006699';stopTimerline()"
onmouseout="this.style.backgroundColor= '#0099cc';runTimerline()">菜单项九</div>
<div align=center id="item20" style="position:absolute; left:250px; top:253px; width:99px; height:19px; z-index:6; background-color: #0099CC; layer-background-color: #0099CC; border: 1px none #000000; filter:alpha(opacity=0);padding-top:3;cursor:hand;font-size:9pt"
onmouseover="this.style.backgroundColor= '#006699';stopTimerline()"
onmouseout="this.style.backgroundColor= '#0099cc';runTimerline()">菜单项十</div></div>
</body>
</html>
*******************************************************
补充：
这种可能会比较容易扩展一点
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="GENERATOR" content="Microsoft FrontPage 4.0">
<meta name="ProgId" content="FrontPage.Editor.Document">
<title>下滑菜单</title>
<style type="text/css">
.menubar{position:absolute;top:10px;width:100px;height:20px;cursor:default;border-width:1px;border-style:outset;color:yellow;background:#0099cc}
.menu{position:absolute;top:30px;width:140px;display:none;border-width:2px;border-style:outset;border-color:white sliver sliver white;background:yellow;padding:15px}
.menu A{text-decoration:none;color:blue}
.menu A:hover{color:#00ffff}
</style>
<script language="javascript">
function menuControl(show)
{
window.event.cancelBubble=true;
var objID=event.srcElement.id;
var index=objID.indexOf("_");
var mainID=objID.substring(0,index);
var numID=objID.substring(index+1,objID.length);
if(mainID=="menubar")
{
if(show==1)
{
eval("showMenu("+"menu_"+numID+")");
}
else
{
eval("hideMenu("+"menu_"+numID+")");
}
}
}
var nbottom=0,speed=1;
function displayMenu(obj)
{
obj.style.clip="rect(0 100% "+nbottom+"% 0)";
nbottom+=speed;
if(nbottom<=100)
{
timerID=setTimeout("displayMenu("+obj.id+"),70");
}
else clearTimeout(timerID);
}
function showMenu(obj)
{
obj.style.display="block";
obj.style.clip="rect(0 0 0 0)";
nbottom=5;
displayMenu(obj);
}
function hideMenu(obj)
{
nbottom=0;
obj.style.display="none";
}
function keepMenu(obj)
{
obj.style.display="block";
}
</script>
</head>
<body>
<table border="0" width="400" cellspacing="0" cellpadding="0" style="font-size:15px">
<tr>
<td width="20%">
<div align="center"id="menubar_1" class="menubar" onmouseover="menuControl(1)" onmouseout="menuControl(0)">
教育网站
</div>
</td>
<td width="20%">
<div align="center"id="menubar_2" class="menubar" onmouseover="menuControl(1)" onmouseout="menuControl(0)">
电脑网站
</div>
</td>
<td width="20%">
<div align="center"id="menubar_3" class="menubar" onmouseover="menuControl(1)" onmouseout="menuControl(0)">
免费邮件
</div>
</td>
<td width="20%">
<div align="center"id="menubar_4" class="menubar" onmouseover="menuControl(1)" onmouseout="menuControl(0)">
其它网站
</div>
</td>
</tr>
<tr>
<td width="20%">
<div align="left"id="menu_1" class="menu" onmouseover="keepMenu(this)" onmouseout="hideMenu(this)">
<a href="http://www.cqcas.e.cn">重庆民政学校</a><br>
<a href="http://www.cqu.e.cn">重庆大学</a><br>
<a href="http://www.cquc.e.cn">重庆交通学院</a>
</div>
</td>
<td width="20%">
<div align="left"id="menu_2" class="menu" onmouseover="keepMenu(this)" onmouseout="hideMenu(this)">
<a href="http://www.yesky.com">天极网</a><br>
<a href="http://www.cfan.cn.net">电脑爱好者</a><br>
<a href="http://www.intoweb.com.cn">上网杂志</a>
</div>
</td>
<td width="20%">
<div align="left"id="menu_3" class="menu" onmouseover="keepMenu(this)" onmouseout="hideMenu(this)">
<a href="http://www.163.com">163电子邮件</a><br>
<a href="http://freemail.263.net">首都在线</a><br>
<a href="http://www.21cn.com">21CN电子邮件</a><br>
<a href="http://www.chinese.com">炎皇在线</a>
</div>
</td>
<td width="20%">
<div align="left"id="menu_4" class="menu" onmouseover="keepMenu(this)" onmouseout="hideMenu(this)">
<a href="http://www.sohu.com.cn">搜狐</a><br>
<a href="http://www.yahoo.com">雅虎</a><br>
<a href="http://www.cseek.com">搜索客</a><br>
<a href="http://www.sina.com">新浪网</a><br>
<a href="httP;//www.cqcas.e.cn/user/sailing">远航网站</a>
</div>
</td>
</tr>
</table>
</body>
</html>
</script>
