再贴一个菜单的例子
<script>
var mmenus = new Array();
var misShow = new Boolean();
misShow = false;
var misdown = new Boolean();
misdown = false;
var msrcel;
var mfromel;
var mtoel;
var mnumberofsub=0;
var musestatus=false;
var mthestatus="";
var mpopTimer=0;
mmenucolor='#5b5b5b';
mfontcolor='#ffffff';
mmenuoutcolor='#505050';
mmenuincolor='#505050';
mmenuoutbordercolor='#000000';
mmenuinbordercolor='#000000';
mmidoutcolor='#8D8A85';
mmidincolor='#8D8A85';
mmenuovercolor='#ffdf7f';
mitemedge='0';
msubedge='0';
mmenuunitwidth=40;
mmenuitemwidth=120;
mmenuheight=20;
mmenuwidth='*';
mmenuadjust=0;
mmenuadjustV=-1;
mmenupaddingleft=10
mfonts='font-family: 宋体; font-size: 12px; color: #ffffff; ';
mcursor='default';
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);
}
//oldfun mMenuItem(caption,command,target,isline,level,statustxt,img,sizex,sizey,pos)
//------ mMenuItem(caption,command,target,isline,level,'','','0','0','3')
function mMenuItem(caption,command,target,isline,level){
var statustxt = '';
var img = '';
var sizex = '0';
var sizey = '0';
var pos = '3';
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;
}
//oldfun mMenu(caption,command,target,img,sizex,sizey,pos)
//------ mMenu(caption,command,target,'','0','0','3');
function mMenu(caption,command,target){
var img = '';
var sizex = '0';
var sizey = '0';
var pos = '3';
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.backgroundColor=mmenuoutcolor;
src.style.color=mmenuovercolor;
}
function mtoin(src){
src.style.backgroundColor=mmenuincolor;
src.style.color=mmenuovercolor;
}
function mnochange(src){
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.visibility='hidden';
misShow=false;
//////////////////////////
showEleObj();
}
function msubmenuhide(menuid){
menuid.style.visibility='hidden';
//////////////////////////
showEleObj();
}
function mmenushow(menuid,pid){
menuid.style.left=mposflag.offsetLeft+pid.offsetLeft+mmenuadjust;
menuid.style.top=mposflag.offsetTop+mmenutable.offsetHeight+mmenuadjustV;
menuid.style.visibility='visible';
if(mmenuitemwidth+parseInt(menuid.style.left)>document.body.clientWidth)
menuid.style.left=document.body.clientWidth-mmenuitemwidth;
misShow=true;
//////////////////////////
hideEleObj(menuid);
}
function mshowsubmenu(menuid,pid,rid){
menuid.style.left=pid.offsetWidth+rid.offsetLeft+5;
menuid.style.top=pid.offsetTop+rid.offsetTop;
menuid.style.visibility='visible';
if(mmenuitemwidth+parseInt(menuid.style.left)>document.body.clientWidth)
menuid.style.left=document.body.clientWidth-mmenuitemwidth;
//////////////////////////
hideEleObj(menuid);
}
function mmenu_over(menuid,x){
mtoel = getReal(window.event.toElement, "className", "coolButton");
mfromel = getReal(window.event.fromElement, "className", "coolButton");
if (mtoel == mfromel) return;
msrcel = window.event.srcElement;
if(x<0){
misShow = false;
mallhide();
mtoout(msrcel);
}else{
mallhide();
mtoin(msrcel);
mmenushow(menuid,eval("mMenu"+x));
}
clearTimeout(mpopTimer);
//////////////////////////
hideEleObj(menuid);
}
function mmenu_out(menuid){
mtoel = getReal(window.event.toElement, "className", "coolButton");
mfromel = getReal(window.event.fromElement, "className", "coolButton");
if (mtoel == mfromel) return;
msrcel = window.event.srcElement;
if (misShow){
mtoin(msrcel);
}else{
mnochange(msrcel);
}
mpopOut()
}
function mmenu_down(menuid,x){
msrcel = getReal(window.event.srcElement, "className", "coolButton");
if(misShow){
mmenuhide(menuid);
mtoout(msrcel);
}else{
mtoin(msrcel);
mmenushow(menuid,eval("mMenu"+x));
misdown=true;
}
}
function mmenu_up(){
misdown=false;
}
function mmenuitem_over(menuid,item){
msrcel = 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(msrcel);
}else{
mtoout(msrcel);
}
if(mthestatus!=""){
musestatus=true;
window.status=mthestatus;
}
clearTimeout(mpopTimer);
//////////////////////////
hideEleObj(menuid);
}
function mmenuitem_out(menuid,hassub){
msrcel = getReal(window.event.srcElement, "className", "coolButton");
if(!hassub)
mnochange(msrcel);
if(musestatus)
window.status="";
mpopOut()
}
function mmenuitem_down(menuid){
msrcel = getReal(window.event.srcElement, "className", "coolButton");
mtoin(msrcel)
misdown=true;
}
function mmenuitem_up(menuid){
msrcel = getReal(window.event.srcElement, "className", "coolButton");
mtoout(msrcel)
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){
msrcel = getReal(window.event.srcElement, "className", "coolButton");
for(var x=0;x<=mmenus.length;x++){
if(msrcel.id=="mMenu"+x)
return;
}
for(x=1;x<=mnumberofsub;x++){
if(msrcel.id=="mp"+x)
return;
}
mallhide();
}
}
document.onclick=mbody_click;
var mMenuBodyRef;
function mwritetodocument(){
var mwb=1;
for(var i in document.all){
if (document.all[i].tagName == 'BODY'){
mMenuBodyRef = document.all[i];
var stringx='<div id="mposflag" style="position:absolute;"></div>'+
'<table id=mmenutable border=0 cellpadding=0 cellspacing=0 width='+mmenuwidth+
' height='+mmenuheight+' bgcolor='+mmenucolor+' onselectstart="event.returnValue=false"'+
' style="cursor:'+mcursor+';'+mfonts+' 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="";
}else{
imgsize=" width="+thismenu.sizex+" height="+thismenu.sizey;
}
var ifspace;
if(thismenu.caption==""){
ifspace="";
}else{
ifspace=" ";
}
stringx += "<td valign=bottom class=coolButton id=mMenu"+x+" style='border: "+mitemedge+"px solid "+mmenucolor+
"' onmouseover=mmenu_over(mmenudiv"+x+
","+x+") onmouseout=mmenu_out(mmenudiv"+x+
") onmousedown=mmenu_down(mmenudiv"+x+","+x+")";
if(thismenu.command!=""){
stringx += " onmouseup=mexec2("+x+");mmenu_up();";
}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="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 background="../IMAGE/xpbg.gif" 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-left: '+mmenupaddingleft+'px" 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="";
}else{
imgsize=" width="+thismenuitem.sizex+" height="+thismenuitem.sizey;
}
var ifspace;
if(thismenu.caption==""){
ifspace="";
}else{
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(mmenudiv"+x+
",true) onmouseover=\"mthestatus='"+thismenuitem.statustxt+
"';mmenuitem_over(mmenudiv"+x+",'"+thismenuitem.hasc+
"');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=\"mthestatus='"+thismenuitem.statustxt+"';mmenuitem_over(mmenudiv"+x+
");\" onmouseout=mmenuitem_out(mmenudiv"+x+
") onmousedown=mmenuitem_down(mmenudiv"+x+") onmouseup=";
stringx += "mexec("+x+","+i+");mmenuitem_up(mmenudiv"+x+") ";
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="3"><table width="90%" height=1 bgcolor="'+mfontcolor+'" border=0 cellspacing=0 cellpadding=0><tr><td></td></tr></table></td></tr>\n';
}
}
stringx+='</table>\n</div>';
}
}
for(var j=1;j<=mnumberofsub;j++){
thisitem=eval("msub"+j);
stringx+='<div id=msubmenudiv'+j+
' style="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 background="../IMAGE/xpbg.gif" 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-left: '+mmenupaddingleft+'px" 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="";
}else{
imgsize=" width="+thismenuitem.sizex+" height="+thismenuitem.sizey;
}
var ifspace;
if(thismenu.caption==""){
ifspace="";
}else{
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(msubmenudiv"+j+
",true) onmouseover=\"mthestatus='"+thismenuitem.statustxt+
"';mmenuitem_over(msubmenudiv"+j+
",'"+thismenuitem.hasc+
"');mshowsubmenu(msubmenudiv"+thismenuitem.hasc+",mp"+thismenuitem.hasc+
",msubmenudiv"+j+");\""+"><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=\"mthestatus='"+
thismenuitem.statustxt+"';mmenuitem_over(msubmenudiv"+j+
");\" onmouseout=mmenuitem_out(msubmenudiv"+j+
") onmousedown=mmenuitem_down(msubmenudiv"+j+") onmouseup=";
stringx += "mexec3("+j+","+i+");mmenuitem_up(msubmenudiv"+j+") ";
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"><table width="90%" height=1 bgcolor="'+mfontcolor+'" border=0 cellspacing=0 cellpadding=0><tr><td></td></tr></table></td></tr>\n';
}
}
stringx+='</table>\n</div>';
}
document.write("<div align='left'>"+stringx+"</div>");
break;
}
}
}
function showEleObj() {
showElement("IFRAME");
showElement("OBJECT");
showElement("SELECT");
}
function hideEleObj(menuid) {
var ox = parseInt(menuid.style.left);
var oy = parseInt(menuid.style.top);
var ow = menuid.offsetWidth;
var oh = menuid.offsetHeight;
hideElement("IFRAME", ox, oy, ow, oh);
hideElement("OBJECT", ox, oy, ow, oh);
hideElement("SELECT", ox, oy, ow, oh);
}
function showElement(elmID){
for (i = 0; i < document.all.tags(elmID).length; i++) {
obj = document.all.tags(elmID)[i];
if (! obj || ! obj.offsetParent)
continue;
obj.style.visibility = "";
}
}
function hideElement(elmID, ox, oy, ow, oh){
ox = parseInt(ox);
oy = parseInt(oy);
ow = parseInt(ow);
oh = parseInt(oh);
for (i = 0; i < document.all.tags(elmID).length; i++) {
obj = document.all.tags(elmID)[i];
if (! obj || ! obj.offsetParent)
continue;
objLeft = obj.offsetLeft;
objTop = obj.offsetTop;
objParent = obj.offsetParent;
while (objParent.tagName.toUpperCase() != "BODY") {
objLeft += objParent.offsetLeft;
objTop += objParent.offsetTop;
objParent = objParent.offsetParent;
}
if ( (ox > (objLeft+obj.offsetWidth)) || (objLeft > (ox+ow)) || (objTop > (oy+oh)) || (oy>(objTop+obj.offsetHeight)) )
;
else
obj.style.visibility = "hidden";
}
}
function initMenu(){
mwritetodocument();
}
mpmenu1 = new mMenu('Menu1','','');
msub1 = new mMenuItem('Item 1','','',false,'1');
msub1.addsubItem(new mMenuItem('Page 1','','',false,null));
msub1.addsubItem(new mMenuItem('Page 2','','',false,null));
msub1.addsubItem(new mMenuItem('Page 3','','',false,null));
msub1.addsubItem(new mMenuItem('Page 4','','',false,null));
mpmenu1.addItem(msub1);
msub2 = new mMenuItem('Item 2','','',false,'1');
msub2.addsubItem(new mMenuItem('Page 1','','',false,null));
msub2.addsubItem(new mMenuItem('Page 2','','',false,null));
msub2.addsubItem(new mMenuItem('Page 3','','',false,null));
msub2.addsubItem(new mMenuItem('Page 4','','',false,null));
mpmenu1.addItem(msub2);
mpmenu1.addItem(new mMenuItem('Item 3','','',false,null));
mpmenu1.addItem(new mMenuItem('Item 4','','',false,null));
mpmenu1.addItem(new mMenuItem('Item 5','','',false,null));
////////////////////
mpmenu2 = new mMenu('Menu2','','');
mpmenu2.addItem(new mMenuItem('Item 1','','',false,null));
mpmenu2.addItem(new mMenuItem('Item 2','','',false,null));
mpmenu3 = new mMenu('Menu3','','');
mpmenu3.addItem(new mMenuItem('Item 1','','',false,null));
mpmenu3.addItem(new mMenuItem('Item 2','','',false,null));
mpmenu3.addItem(new mMenuItem('Item 3','','',false,null));
mpmenu3.addItem(new mMenuItem('Item 4','','',false,null));
mpmenu4 = new mMenu('Menu4','','');
mpmenu5 = new mMenu('Menu5','','');
mpmenu5.addItem(new mMenuItem('Item 1','','',false,null));
mpmenu5.addItem(new mMenuItem('Item 2','','',false,null));
mpmenu5.addItem(new mMenuItem('Item 3','','',false,null));
</script>
<table cellspacing=0 cellpadding=0 border=0 width="100%" bgcolor="#5b5b5b">
<tr>
<td><script>initMenu()</script></td>
</tr>
</table>
<p>
<select></select>
<select></select>
<select></select>
<select></select>
<select></select>
</p>
<p>
<select></select>
<select></select>
<select></select>
<select></select>
<select></select>
</p>
<p>
<select></select>
<select></select>
<select></select>
<select></select>
<select></select>
</p>
