Ciao a tutti,
ho trovato questo bellissimo script per un menu ad albero...

vi posto l'esempio che potete vedere: http://grapho.calafurialivorno.it/menu2/

sotto vi posto il codice delle 3 pagine ... ma prima la richiesta...
dunque, come vedere il menu si "espande" al passaggio del mouse... e va benissimo.. però per un solo "sotto-livello".
Sto cercando di capire se è possibile farlo espandere anche per i sotto-sotto-livelli e così via...

sapete dirmi se si come posso fare ?

grazie

ecco le pagine:

pagina html/php
Codice PHP:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<
html xmlns="http://www.w3.org/1999/xhtml">
<
head>
<
meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<
title>JavaScript Dropdown Menu Demo</title>
<
link rel="stylesheet" href="flyout.css" type="text/css" />
<
script type="text/javascript" src="flyout.js"></script>
</head>
<body>
<div id="wrapper">
<div id="leftcolumn">
  <dl class="dropdown">
    <dt id="one-ddheader" class="upperdd" onmouseover="ddMenu('one',1)" onmouseout="ddMenu('one',-1)">Dropdown One</dt>

    <dd id="one-ddcontent" onmouseover="cancelHide('one')" onmouseout="ddMenu('one',-1)">
      <ul>[*][url="#"]Navigation Item 1[/url][*][url="#"]Navigation Item 2[/url][*][url="#"]Navigation Item 3[/url][/list]
    </dd>
  </dl>
  <dl class="dropdown">
    <dt id="two-ddheader" class="upperdd" onmouseover="ddMenu('two',1)" onmouseout="ddMenu('two',-1)">Dropdown Two</dt>
    <dd id="two-ddcontent" onmouseover="cancelHide('two')" onmouseout="ddMenu('two',-1)">
      <ul>[*][url="#"]Navigation Item 1[/url][*][url="#"]Navigation Item 2[/url][*][url="#"]Navigation Item 3[/url][*][url="#"]Navigation Item 4[/url][*][url="#"]Navigation Item 5[/url][/list]
    </dd>
  </dl>
  <dl class="dropdown">

    <dt id="three-ddheader" class="upperdd">Menu Item Three</dt>
  </dl>
  <dl class="dropdown">
    <dt id="four-ddheader" onmouseover="ddMenu('four',1)" onmouseout="ddMenu('four',-1)">[url="#"]Dropdown Four[/url]</dt>
    <dd id="four-ddcontent" onmouseover="cancelHide('four')" onmouseout="ddMenu('four',-1)">
      <ul>[*][url="#"]Navigation Item 1[/url]
[*][url="#"]Navigation Item 2[/url][/list]
    </dd>
  </dl>
</div>
<div id="rightcolumn">
  Lorem ipsum....
</div>
</div>
</body>
</html> 
pagina CSS

Codice PHP:
* {padding:0margin:0}
body {font:12px VerdanaArialHelvetica}
#wrapper {width:750px; padding:25px; margin:0 auto}
#leftcolumn {float:left; width:225px}
#rightcolumn {float:left; width:525px}
.dropdown {display:blockposition:relative}
.
dropdown dt {display:blockwidth:188pxborder:2px solid #9ac1c9; padding:8px; font-weight:bold; cursor:pointer; /*background:url(images/header.gif)*/ background:#CCFFFF;}
.dropdown dt:hover {/*background:url(images/header_over.gif)*/ background:#CCCCFF}
.dropdown a {display:blocktext-decoration:nonecolor:#333}
.dropdown a:hover {color:#000}
.dropdown .upperdd {border-bottom:none}
.
dropdown dd {position:absolutetop:0overflow:hiddenwidth:208pxdisplay:nonebackground:#fff; opacity:0}
.dropdown ul {width:204pxborder:2px solid #9ac1c9; list-style:none}
.dropdown li {display:inline}
.
dropdown ul a, .dropdown ul a:active, .dropdown ul a:visited {padding:5pxbackground:#eaf0f2; width:194px}
.dropdown ul a:hover {background:#d9e1e4}
.dropdown .underline {border-bottom:1px solid #b9d6dc} 
PAGINA JS
Codice PHP:
var DDSPEED 10;
var 
DDTIMER 15;
var 
OFFSET = -2;
var 
ZINT 100;

function 
ddMenu(id,d){
  var 
document.getElementById(id '-ddheader');
  var 
document.getElementById(id '-ddcontent');
  
clearInterval(c.timer);
  if(
== 1){
    
clearTimeout(h.timer);
    
c.style.display 'block';
    if(
c.maxh && c.maxh <= c.offsetHeight){return}
    else if(!
c.maxh){
      
c.style.left = (h.offsetWidth OFFSET) + 'px';
      
c.style.height 'auto';
      
c.maxh c.offsetHeight;
      
c.style.height '0px';
    }
    
ZINT ZINT 1;
    
c.style.zIndex ZINT;
    
c.timer setInterval(function(){ddSlide(c,1)},DDTIMER);
  }else{
    
h.timer setTimeout(function(){ddCollapse(c)},50);
  }
}

function 
ddCollapse(c){
  
c.timer setInterval(function(){ddSlide(c,-1)},DDTIMER);
}

function 
cancelHide(id){
  var 
document.getElementById(id '-ddheader');
  var 
document.getElementById(id '-ddcontent');
  
clearTimeout(h.timer);
  
clearInterval(c.timer);
  if(
c.offsetHeight c.maxh){
    
c.timer setInterval(function(){ddSlide(c,1)},DDTIMER);
  }
}

function 
ddSlide(c,d){
  var 
currh c.offsetHeight;
  var 
dist;
  if(
== 1){
    
dist Math.round((c.maxh currh) / DDSPEED);
  }else{
    
dist Math.round(currh DDSPEED);
  }
  if(
dist <= && == 1){
    
dist 1;
  }
  
c.style.height currh + (dist d) + 'px';
  
c.style.opacity currh c.maxh;
  
c.style.filter 'alpha(opacity=' + (currh 100 c.maxh) + ')';
  if(
currh > (c.maxh 2) && == 1){
    
clearInterval(c.timer);
  }else if(
dist && != 1){
    
clearInterval(c.timer);
    
c.style.display 'none';
  }

grazie!