verschachteles popupmenu

[John]

Mein hauptproblem is das ich nicht weis was mein problem ist!!!

Ich habe absolut keine Ahnung von js!!!
Habe bisher nur C, VB, SQL und PHP programmiert
naja hier mal mein script:

<script language="JavaScript1.2">
var linkset=new Array()

linkset[0]='<div class="menuitems"><a href="http://www.jswelt.de">RMT</a></div>'
linkset[0]+='<div class="menuitems"><a href="http://forum.jswelt.de">MRO</a></div>'
linkset[0]+='<div class="menuitems"><a href="http://forum.jswelt.de">Collaboration</a></div>'
linkset[0]+='<div class="menuitems"><a href="http://forum.jswelt.de">PDM/PLM</a></div>'
linkset[0]+='<div class="menuitems"><a href="solidwork.html" target="Hauptfenster">CAD</a></div>'
linkset[0]+='<div class="menuitems"><a href="http://forum.jswelt.de">CAD Integration</a></div>'
linkset[0]+='<div class="menuitems"><a href="http://forum.jswelt.de">ERP Integrration</a></div>'

linkset[1]='<div class="menuitems"><a href="http://www.google.de">Product Requirements</a></div>'
linkset[1]+='<div class="menuitems"><a href="http://www.altavista.com">Concept & Design</a></div>'
linkset[1]+='<div class="menuitems"><a href="http://www.altavista.com">Manufacturing Planning</a></div>'
linkset[1]+='<div class="menuitems"><a href="http://www.altavista.com">Production</a></div>'
linkset[1]+='<div class="menuitems"><a href="http://www.altavista.com">Service & Support</a></div>'

var ie4=document.all&&navigator.userAgent.indexOf("Opera")==-1
var ns6=document.getElementById&&!document.all
var ns4=document.layers

function showmenu(e,which){

if (!document.all&&!document.getElementById&&!document.layers)
return

clearhidemenu()

menuobj=ie4? document.all.popmenu : ns6? document.getElementById("popmenu") : ns4? document.popmenu : ""
menuobj.thestyle=(ie4||ns6)? menuobj.style : menuobj

if (ie4||ns6)
menuobj.innerHTML=which
else{
menuobj.document.write('<layer name=gui bgColor=#E6E6E6 width=200 onmouseover="clearhidemenu()" onmouseout="hidemenu()">'+which+'</layer>')
menuobj.document.close()
}

menuobj.contentwidth=(ie4||ns6)? menuobj.offsetWidth : menuobj.document.gui.document.width
menuobj.contentheight=(ie4||ns6)? menuobj.offsetHeight : menuobj.document.gui.document.height
eventX=ie4? event.clientX : ns6? e.clientX : e.x
eventY=ie4? event.clientY : ns6? e.clientY : e.y

var rightedge=ie4? document.body.clientWidth-eventX : window.innerWidth-eventX
var bottomedge=ie4? document.body.clientHeight-eventY : window.innerHeight-eventY

if (rightedge<menuobj.contentwidth)

menuobj.thestyle.left=ie4? document.body.scrollLeft+eventX-menuobj.contentwidth : ns6? window.pageXOffset+eventX-menuobj.contentwidth : eventX-menuobj.contentwidth
else

menuobj.thestyle.left=ie4? document.body.scrollLeft+eventX : ns6? window.pageXOffset+eventX : eventX

if (bottomedge<menuobj.contentheight)
menuobj.thestyle.top=ie4? document.body.scrollTop+eventY-menuobj.contentheight : ns6? window.pageYOffset+eventY-menuobj.contentheight : eventY-menuobj.contentheight
else
menuobj.thestyle.top=ie4? document.body.scrollTop+event.clientY : ns6? window.pageYOffset+eventY : eventY
menuobj.thestyle.visibility="visible"
return false
}

function contains_ns6(a, b) {

while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function hidemenu(){
if (window.menuobj)
menuobj.thestyle.visibility=(ie4||ns6)? "hidden" : "hide"
}

function dynamichide(e){
if (ie4&&!menuobj.contains(e.toElement))
hidemenu()
else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
hidemenu()
}

function delayhidemenu(){
if (ie4||ns6||ns4)
delayhide=setTimeout("hidemenu()",500)
}

function clearhidemenu(){
if (window.delayhide)
clearTimeout(delayhide)
}

function highlightmenu(e,state){
if (document.all)
source_el=event.srcElement
else if (document.getElementById)
source_el=e.target
if (source_el.className=="menuitems"){
source_el.id=(state=="on")? "mouseoverstyle" : ""
}
else{
while(source_el.id!="popmenu"){
source_el=document.getElementById? source_el.parentNode : source_el.parentElement
if (source_el.className=="menuitems"){
source_el.id=(state=="on")? "mouseoverstyle" : ""
}
}
}
}

if (ie4||ns6)
document.onclick=hidemenu

</script>

Das script is auch nicht komplett von mir!!!
daher meine probleme,..ich kann mich irgendwie nicht richti reinlesen ins das script!!!