OK, codice modificato nella seguente maniera:

codice:
<HTML>
<HEAD>
<TITLE>MODULO RICERCA CONTENUTO CATALOGATO PER AREA</TITLE>
<HTML>
<HEAD>
<SCRIPT LANGUAGE="JavaScript">
outline = new makeArray(40) // create global object

function init(){
   	  if (navigator.appName == "Netscape") {
		    layerStyleRef="layer.";
 			layerRef="document.layers";
			styleSwitch="";
			}else{
 			layerStyleRef="layer.style.";
			layerRef="document.all";
 			styleSwitch=".style";
		} 	
}
function conferma(myform)
{
    myform.submit();
}
</SCRIPT>
<SCRIPT LANGUAGE="JavaScript">
var caution = false
function setCookie(name, value, expires, path, domain, secure) {
var curCookie = name + "=" + escape(value) +
((expires) ? "; expires=" + expires.toGMTString() : "") +
((path) ? "; path=" + path : "") +
((domain) ? "; domain=" + domain : "") +
((secure) ? "; secure" : "")
if (!caution || (name + "=" + escape(value)).length <= 4000)
document.cookie = curCookie
else
if (confirm("Cookie exceeds 4KB and will be cut!"))
document.cookie = curCookie
}

function getCookie(name) {
var prefix = name + "="
var cookieStartIndex = document.cookie.indexOf(prefix)
if (cookieStartIndex == -1)
return null
var cookieEndIndex = document.cookie.indexOf(";", cookieStartIndex + prefix.length)
if (cookieEndIndex == -1)
cookieEndIndex = document.cookie.length
return unescape(document.cookie.substring(cookieStartIndex + prefix.length, cookieEndIndex))
}


function item(parent, text, depth) {
this.parent = parent // is this item a parent?
this.text = text // text for link (may include HTML)
this.depth = depth // nested depth
}
function makeArray(length) {
this.length = length // length of array (integer)
}
function makeDatabase() {
outline[0] = new item(true, 'area funzionale', 0)
outline[1] = new item(false, 'Servizi, 1)
outline[2] = new item(false, 'Personale, 1)
outline[3] = new item(false, 'Tecnica, 1)
outline[4] = new item(false, 'Commerciale, 1)
outline[5] = new item(false, 'Amministrativa, 1)
outline[6] = new item(false, 'Qualita, 1)
outline[7] = new item(false, 'Privacy, 1)
setStates()
setImages()
}
function setStates() {
var storedValue = getCookie("outline")
if (!storedValue) {
for (var i = 0; i < outline.length; ++i) {
if (outline[i].depth == 0)
outline[i].state = true
else
outline[i].state = false
}
} else {
for (var i = 0; i < outline.length; ++i) {
if (storedValue.charAt(i) == '1')
outline[i].state = true
else
outline[i].state = false
}
}
}
function setImages() {
for (var i = 0; i < outline.length; ++i) {
if (outline[i].state)
if (outline[i].parent) // outline[i] is a parent
if (outline[i + 1].state) // outline[i] is exploded
outline[i].pic = '[img]/kmstatic-daw/ftv2folderopen.gif[/img]
else // outline[i] is collapsed
outline[i].pic = '[img]/kmstatic-daw/ftv2folderclosed.gif[/img]
else // outline[i] is only a child (not a parent)
outline[i].pic = '[img]/kmstatic-daw/ftv2doc.gif[/img]
}
}
function toggle(num) {
for (var i = num + 1; i < outline.length && outline[i].depth >= outline[num].depth + 1; ++i) {
if (outline[i].depth == outline[num].depth + 1)
outline[i].state = !outline[i].state // toggle state
}
setStorage()
history.go(0)
}
function setStorage() {
var text = ""
for (var i = 0; i < outline.length; ++i) {
text += (outline[i].state) ? "1" : "0"
}
setCookie("outline", text)
}
makeDatabase()
</SCRIPT>
</HEAD>
<body BGCOLOR="#E5E1D3" link="#FF6200" vlink="#FF6200" alink="#FF6200" onLoad="init()">
<TABLE CELLPADDING=5 WIDTH="98%">
<TR>
<TD>
<SCRIPT LANGUAGE="JavaScript">
document.write('<PRE><H4>')
for (var i = 0; i < outline.length; ++i) {
alert(outline.length);
if (outline[i].state) {
for (var j = 0; j < outline[i].depth * 3; ++j) {
document.write(' ')
}
document.write(outline[i].pic, ' ', outline[i].text, '
')
} else {
var previous = i
for (var k = i + 1; k < outline.length && outline[k].depth >= outline[previous].depth; ++k) {
++i
}
}
}
document.write('</H4></PRE>')
</SCRIPT>
</td>
</tr>
</TD>
</TR>
</TABLE>
</BODY>
</HTML>
</BODY>
</HTML>
Ora però non compare nessuna voce nell'albero.