Ciao a tutti:
Ho (realizzato) questo menù a 2 livelli:

//Codice CSS
#nav, #nav ul { /* all lists */
padding: 0;
margin: 0;
list-style: none;
line-height: 1;
}

#nav a {
display: block;
width: 10em;
}

#nav li { /* all list items */
float: left;
width: 10em; /* width needed or else Opera goes nuts */
}

#nav li ul { /* second-level lists */
position: absolute;
background: <%=COLOR_4%>;
width: 10em;
left: -999em; /* using left instead of display to hide menus because display: none isn't read by screen readers */
}

#nav li:hover ul, #nav li.sfhover ul { /* lists nested under hovered list items */
left: auto;
}


//Codice JS
<script language="javascript" type="text/javascript">
<!--
sfHover = function() {
var sfEls = document.getElementById("nav").getElementsByTagNam e("LI");
for (var i=0; i<sfEls.length; i++) {
sfEls[i].onmouseover=function() {
this.className+=" sfhover";
}
sfEls[i].onmouseout=function() {
this.className=this.className.replace(new RegExp(" sfhover\\b"), "");
}
}
}
if (window.attachEvent) window.attachEvent("onload", sfHover);
-->
</script>

//Codice HTML
<ul id="nav">[*]Livello 1
<ul>
[*]Livello 2
[/list]
[/list]


La domanda è come posso implementarlo a 3 livelli???