problema menu ad albero

[Bacchetta]

ciao a tutti....
come mai questo menu ad albero non funziona con l'ultima versione di IE?

mi dice: style è nullo o non è un oggetto.

il codice js principale è questo:

var head="display:''"

var ns6=document.getElementById&&!document.all

var ie4=document.all&&navigator.userAgent.indexOf("Ope ra")==-1



function checkcontained(e){

var iscontained=0

cur=ns6? e.target : event.srcElement

i=0

if (cur.id=="foldheader")

iscontained=1

else

while (ns6&&cur.parentNode||(ie4&&cur.parentElement)){

if (cur.id=="foldheader"||cur.id=="foldinglist"){

iscontained=(cur.id=="foldheader")? 1 : 0

break

}

cur=ns6? cur.parentNode : cur.parentElement

}



if (iscontained){

var foldercontent=ns6? cur.nextSibling.nextSibling : cur.all.tags("UL")[0]

if (foldercontent.style.display=="none"){

foldercontent.style.display=""

}

else{

foldercontent.style.display="none"

}

}

}



if (ie4||ns6)

document.onclick=checkcontained

------------------------------------------------------------------

il codice html è questo:

<table width="100%" border="0" cellspacing="0" cellpadding="0" class="testo_bianco_big">
<tr>
<td><div align="left">
<ul>
<li id="foldheader">Tende a Bracci
<ul id="foldinglist" style="display:none","&{head}";>
<li id="foldheader">senza cassonetto
<ul id="foldinglist" style="display:none","&{head}";>

[*]California[*]Universa[*]Costarica[*]Mexico[*]Brasil[*]Univariant[*]Rio new[*]8000 EE Combi[*]8000 E Combi plus[*]Samba new[*]Jumbo[*]Jumbo BB[*]Elite[*]America



[/list]
<li id="foldheader">con cassonetto
<ul id="foldinglist" style="display:none","&{head}";>

[*]Caraibi[*]Shell[*]Europa[*]Cover[*]Malindi[*]Compacta[*]Oceania[*]Oceania plus[*]Orly[*]Olanda[*]Piuma[/list][/list]
<li id="foldheader">

Cappottine
<ul id="foldinglist" style="display:none","&{head}";>

[*]Standard35[*]Gradini35[*]Prolungata35[*]Standard50[*]Gradini50[*]Prolungata50[*]Cupola[*]Barletta[*]Vogue[*]Delta[*]Beta1002[*]Beta1003[/list]
<li id="foldheader">

Giardino
<ul id="foldinglist" style="display:none","&{head}";>

[*]Montecarlo
[*]Sanremo
[*]Giardino mini[*]Giardino[*]Giardino 94[*]Samos[*]Millenium[*]Sombrea[*]Nuvola[*]Rain cover[*]Silent Flap[*]Straip[/list]
<li id="foldheader">

Classiche
<ul id="foldinglist" style="display:none","&{head}";>

[*]6000 retr&ograve;[*]Loggia[*]Classique[*]Leuca[/list]
<li id="foldheader">

Tunnel e Pagode
<ul id="foldinglist" style="display:none","&{head}";>

[*]Tunnel singolo[*]Tunnel affiancati[*]Tunnel singolo in policarbonato[*]Tunnel affiancato in policarbonato[*]Pensiline[*]Antis[*]Melograno[*]Ginestra[*]Orchidea[*]Ready box[*]Hilton[*]Majestic[*]Luxor[/list]
<li id="foldheader">

Tende a caduta
<ul id="foldinglist" style="display:none","&{head}";>

[*]3000[*]3000 con guide[*]5000 s[*]t4[*]7000 e[*]7000 t[*]Winter balkon[*]3000 zip[*]3000 cavetto[*]Ostuni[*]Orizzonte[*]Roll[/list][/list]
</div>
<script type="text/javascript" src="js/cookies.js"></script></td>
</tr>
</table>


----------------------

il file cookies.js è questo:

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;

}

var foldercontentarray=new Array()

var c=0

if (ns6){

for (i=0;i<document.getElementsByTagName("UL").length; i++){

if (document.getElementsByTagName("UL")[i].id=="foldinglist"){

foldercontentarray[c]=document.getElementsByTagName("UL")[i]

c++

}

}

}

if (get_cookie(window.location.pathname) != ''){

var openresults=get_cookie(window.location.pathname).s plit(" ")

for (i=0 ; i < openresults.length ; i++){

if (ns6){

foldercontentarray[openresults[i]].style.display=''



foldercontentarray[openresults[i]].previousSibling.previousSibling.style.listStyleIm age="none"

}

else{

foldinglist[openresults[i]].style.display=''

document.all[foldinglist[openresults[i]].sourceIndex -

1].style.listStyleImage="none" }

}

}

if (ns6||ie4){

var nodelength=ns6? c-1 : foldinglist.length-1

var nodes=new Array(nodelength)

var openones=''

}

function checkit(){

for (i=0 ; i <= nodelength ; i++){

if

((ns6&&foldercontentarray[i].style.display=='')||(ie4&&foldinglist[i].style.display==''))

openones=openones + " " + i

}

document.cookie=window.location.pathname+"="+openo nes

}

if (ns6||ie4)

window.onunload=checkit

-------------------------

vi prego sto impazzendooooo

[mirkoagrati]

Ciao,
per non perdere troppo tempo:

in che parte del codice ti restituisce l'errore?

Ciao