Datum für Formular berechnen und einblenden

Hallo,
bin leider ein Greenhorn.

Mit dem folgenden Quelltext kann ich nur das Datum bis zum 03.03.08 statt
bis zum 31.10.08 "produzieren"! Woran liegt das?


DatArray = new Array("So","Mo","Di","Mi","Do","Fr","Sa","??" );
var today = new Date();
var dayOffset = 1000 * 60 *60 * 24;
var tomorow = new Date(today.getTime() + dayOffset);
function writeDateSelect(startDate, howMany, selected){
startTime = startDate.getTime();
var day = new Date(startTime);
for (var i=1; i<howMany; i++){
day.setTime(startTime + (dayOffset * i));
var selectStr = "<option value=\"" + (day.getTime()-
(day.getTime()%1000))/1000 + "\""
if (i == selected){
selectStr = selectStr + " selected "
}
selectStr = selectStr + ">" + Getdatum(i) + "</option>";
document.write(selectStr);
}
}
function Getdatum(offset)
{
var time = new Date()
time.setTime( time.getTime()+offset*86400000)
return DatArray[time.getDay()]+' '+time.getDate()
+'.'+(1+time.getMonth())+'.'+(2000+(time.getYear() %100))
}
function MM_reloadPage(init)
{
if (init==true) with (navigator)
{
if ((appName=='Netscape')&&(parseInt(appVersion)==4))
{
document.MM_pgW=innerWidth; document.MM_pgH=
innerHeight; onresize=MM_reloadPage;
}
}
else if (innerWidth!=document.MM_pgW || innerHeight!=
document.MM_pgH) location.reload();
}
MM_reloadPage(true);
var zufallszahl = 1 + 9999999*(Math.random());
var zahl = Math.round(zufallszahl);
var jetzt = new Date();
var Tag = jetzt.getDate()+3;
var Monat = jetzt.getMonth();
var Jahr = jetzt.getFullYear();
var bald = new Date(Jahr,Monat,Tag + 7);
var Tag_b = bald.getDate();
var Monat_b = bald.getMonth();
var Jahr_b = bald.getFullYear();
function create_dd(start,end,selected){
for(var COUNT=start; COUNT <= end; COUNT++){
if(COUNT == selected) document.write("<option value=" + COUNT +"<selected>"
+ COUNT + "</option>");
else document.write("<option value="+ COUNT+">"+ COUNT+ "</option>");
}
}

function MM_jumpMenu(targ,selObj,restore){ //v3.0
eval(targ+".location='"+selObj.options[selObj.selectedIndex].value+"'");
if (restore) selObj.selectedIndex=0;
}


Vorab vielen Dank für Eure Hilfe, Norbert!