Use this code:
<head>
<style type="text/css">
.menutitle{
cursor:pointer;
margin-bottom: 5px;
background-color:#ffffff;
color:#000000;
width:140px;
padding:2px;
font-style:verdana;
text-align:left;
font-weight:bold;
/*/*/border:0px solid #000000;/* */
}
.submenu{
margin-bottom: 0.5em;
}
</style>
<script type="text/javascript">
var persistmenu="yes" //"yes" or "no". Make sure each SPAN content contains an incrementing ID starting at 1 (id="sub1", id="sub2", etc)
var persisttype="sitewide" //enter "sitewide" for menu to persist across site, "local" for this page only
if (document.getElementById){
document.write('<style type="text/css">\n')
document.write('.submenu{display: none;}\n')
document.write('</style>\n')
}
function SwitchMenu(obj){
if(document.getElementById){
var el = document.getElementById(obj);
var ar = document.getElementById("masterdiv").getElementsByTagName("span");
if(el.style.display != "block"){
for (var i=0; i<ar.length; i++){
if (ar[i].className=="submenu")
ar[i].style.display = "none";
}
el.style.display = "block";
}else{
el.style.display = "none";
}
}
}
function get_cookie(Name) {
var search = Name + "="
var returnvalue = "";
if (document.cookie.length > 0) {
offset = document.cookie.indexOf(search)
if (offset != -1) {
offset += search.length
end = document.cookie.indexOf(";", offset);
if (end == -1) end = document.cookie.length;
returnvalue=unescape(document.cookie.substring(off set, end))
}
}
return returnvalue;
}
function onloadfunction(){
if (persistmenu=="yes"){
var cookiename=(persisttype=="sitewide")? "switchmenu" : window.location.pathname
var cookievalue=get_cookie(cookiename)
if (cookievalue!="")
document.getElementById(cookievalue).style.display ="block"
}
}
function savemenustate(){
var inc=1, blockid=""
while (document.getElementById("sub"+inc)){
if (document.getElementById("sub"+inc).style.display=="block"){
blockid="sub"+inc
break
}
inc++
}
var cookiename=(persisttype=="sitewide")? "switchmenu" : window.location.pathname
var cookievalue=(persisttype=="sitewide")? blockid+";path=/" : blockid
document.cookie=cookiename+"="+cookievalue
}
if (window.addEventListener)
window.addEventListener("load", onloadfunction, false)
else if (window.attachEvent)
window.attachEvent("onload", onloadfunction)
else if (document.getElementById)
window.onload=onloadfunction
if (persistmenu=="yes" && document.getElementById)
window.onunload=savemenustate
</script>
</head>
<body>
<font face="Verdana" size="1" color="000000">
<!-- Keep all menus within masterdiv-->
</font>
<div id="masterdiv">
<div class="menutitle" onclick="SwitchMenu('sub1')">
<font face="Verdana" size="1">Link</font></div>
<font face="Verdana" size="1">
<span class="submenu" id="sub1">
- <a href="#"><span style="text-decoration: none">1</span></a><br>
- <a href="#"><span style="text-decoration: none">2</span></a><br>
- <a href="#"><span style="text-decoration: none">3</span></a><br>
- <a href="#"><span style="text-decoration: none">4</span></a>
</span>
</font>
<div class="menutitle" onclick="SwitchMenu('sub2')">
<font face="Verdana" size="1">Link</font></div>
<font face="Verdana" size="1">
<span class="submenu" id="sub2">
- <a href="#"><span style="text-decoration: none">1</span></a><br>
- <a href="#"><span style="text-decoration: none">2</span></a><br>
- <a href="#"><span style="text-decoration: none">3</span></a><br>
- <a href="#"><span style="text-decoration: none">4</span></a>
</span>
</font>
<div class="menutitle" onclick="SwitchMenu('sub3')">
<font face="Verdana" size="1">Link</font></div>
<font face="Verdana" size="1">
<span class="submenu" id="sub3">
- <a href="#"><span style="text-decoration: none">1</span></a><br>
- <a href="#"><span style="text-decoration: none">2</span></a><br>
- <a href="#"><span style="text-decoration: none">3</span></a><br>
- <a href="#"><span style="text-decoration: none">4</span></a>
</span>
</font>
<div class="menutitle" onclick="SwitchMenu('sub4')">
<font face="Verdana" size="1">Link</font></div>
<font face="Verdana" size="1">
<span class="submenu" id="sub4">
- <a href="#"><span style="text-decoration: none">1</span></a><br>
- <a href="#"><span style="text-decoration: none">2</span></a><br>
- <a href="#"><span style="text-decoration: none">3</span></a><br>
- <a href="#"><span style="text-decoration: none">4</span></a>
</span>
</font>
</div>
</body>