Questo funziona (non far caso aglii \) però non riesco a validarlo :

var menu1=new Array()
menu1[0]='<a href=\"societa.php\">Profilo</a>'
menu1[1]='<a href=\"mission.php\">Mission</a>'
menu1[2]='<a href=\"trasparenza.php\">Trasparenza</a>'
menu1[3]='<a href=\"pdf/privacy.pdf\" target=\"_blank\">Privacy</a>'

var menuwidth='165px' //default menu width
var menubgcolor='#233142' //menu bgcolor
var disappeardelay=250 //menu disappear speed onMouseout (in miliseconds)
var hidemenu_onclick=\"yes\" //hide menu when user clicks within menu?

/////No further editting needed

var ie4=document.all
var ns6=document.getElementById&amp;&amp;!document.all

if (ie4||ns6)
document.write('<div id=\"dropmenudiv\" style=\"visibility:hidden;width:'+menuwidth+';back ground-color:'+menubgcolor+'\" onMouseover=\"clearhidemenu()\" onMouseout=\"dynamichide(event)\"></div>')

function getposOffset(what, offsettype){
var totaloffset=(offsettype==\"left\")? what.offsetLeft : what.offsetTop;
var parentEl=what.offsetParent;
while (parentEl!=null){
totaloffset=(offsettype==\"left\")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
parentEl=parentEl.offsetParent;
}
return totaloffset;
}

function showhide(obj, e, visible, hidden, menuwidth){
if (ie4||ns6)
dropmenuobj.style.left=dropmenuobj.style.top=-500
if (menuwidth!=\"\"){
dropmenuobj.widthobj=dropmenuobj.style
dropmenuobj.widthobj.width=menuwidth
}
if (e.type==\"click\" &amp;&amp; obj.visibility==hidden || e.type==\"mouseover\")
obj.visibility=visible
else if (e.type==\"click\")
obj.visibility=hidden
}

function iecompattest(){
return (document.compatMode &amp;&amp; document.compatMode!=\"BackCompat\")? document.documentElement : document.body
}

function clearbrowseredge(obj, whichedge){
var edgeoffset=0
if (whichedge==\"rightedge\"){
var windowedge=ie4 &amp;&amp; !window.opera? iecompattest().scrollLeft+iecompattest().clientWid th-15 : window.pageXOffset+window.innerWidth-15
dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
if (windowedge-dropmenuobj.x < dropmenuobj.contentmeasure)
edgeoffset=dropmenuobj.contentmeasure-obj.offsetWidth
}
else{
var topedge=ie4 &amp;&amp; !window.opera? iecompattest().scrollTop : window.pageYOffset
var windowedge=ie4 &amp;&amp; !window.opera? iecompattest().scrollTop+iecompattest().clientHeig ht-15 : window.pageYOffset+window.innerHeight-18
dropmenuobj.contentmeasure=dropmenuobj.offsetHeigh t
if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure){ //move up?
edgeoffset=dropmenuobj.contentmeasure+obj.offsetHe ight
if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure) //up no good either?
edgeoffset=dropmenuobj.y+obj.offsetHeight-topedge
}
}
return edgeoffset
}

function populatemenu(what){
if (ie4||ns6)
dropmenuobj.innerHTML=what.join(\"\")
}

function dropdownmenu(obj, e, menucontents, menuwidth){
if (window.event) event.cancelBubble=true
else if (e.stopPropagation) e.stopPropagation()
clearhidemenu()
dropmenuobj=document.getElementById? document.getElementById(\"dropmenudiv\") : dropmenudiv
populatemenu(menucontents)

if (ie4||ns6){
showhide(dropmenuobj.style, e, \"visible\", \"hidden\", menuwidth)
dropmenuobj.x=getposOffset(obj, \"left\")
dropmenuobj.y=getposOffset(obj, \"top\")
dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, \"rightedge\")+\"px\"
dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, \"bottomedge\")+obj.offsetHeight+\"px\"
}

return clickreturnvalue()
}

function clickreturnvalue(){
if (ie4||ns6) return false
else return true
}

function contains_ns6(a, b) {
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function dynamichide(e){
if (ie4&amp;&amp;!dropmenuobj.contains(e.toElement))
delayhidemenu()
else if (ns6&amp;&amp;e.currentTarget!= e.relatedTarget&amp;&amp; !contains_ns6(e.currentTarget, e.relatedTarget))
delayhidemenu()
}

function hidemenu(e){
if (typeof dropmenuobj!=\"undefined\"){
if (ie4||ns6)
dropmenuobj.style.visibility=\"hidden\"
}
}

function delayhidemenu(){
if (ie4||ns6)
delayhide=setTimeout(\"hidemenu()\",disappeardelay )
}

function clearhidemenu(){
if (typeof delayhide!=\"undefined\")
clearTimeout(delayhide)
}

if (hidemenu_onclick==\"yes\")
document.onclick=hidemenu