How to calculate future date

Question

I have used the following code from http://forums.adobe.com/message/2077238#2077238.   But it does not seem to work when straddling years.
I want the use to enter a date in DateTimeField1, then the date in DateTimeField2 to add 6 months to DateTimeField1
Then DateTimeField3 to equal 4 months from DateTimeField 2.  Then DateTimeField4 to add 6 months to DateTimeField3
DateTimeField1 = user enter
DateTimeField2 = util.printd("mm/dd/yyyy", DateUtils.addMonth(new Date(Date.parse(DateTimeField1.formattedValue)),5));
DateTimeField3 = util.printd("mm/dd/yyyy", DateUtils.addMonth2(new Date(Date.parse(DateTimeField2 .formattedValue)),4));
DateTimeField4 = util.printd("mm/dd/yyyy", DateUtils.addMonth(new Date(Date.parse(DateTimeField3.formattedValue)),5));
function 
addMonth(date, months){
var year = date.getFullYear();
var month = date.getMonth();
var day = date.getDate();month =  ((month + months - 1) % 12) + 1;
year += parseInt(month / 12);
var days = daysInMonth(month, year);
return new Date(year, month, days);}
function
addMonth2(date, months){
var year = date.getFullYear();
var month = date.getMonth();
var day = 1;month = ((month + months - 1) % 12) + 1;
year += parseInt(month / 12);
return new Date(year, month, day);}
function daysInMonth(month, year) 
 return 32 - new Date(year, month, 32).getDate();}
When I enter 01/01/2010 in DateTimeField1, the following is that results:
DateTimeField2 = 06/30/2010
DateTimeField3 = 10/01/2010
DateTimeField4 = 03/31/2010
The desired result is:
DateTimeField2 = 06/30/2010
DateTimeField3 = 10/01/2010
DateTimeField4 = 03/31/2011

Answer 1

Hi,  I'm not sure I understand the result required here.  Wont 6 months on from 01/01/2010 be 01/07/2010, then 4 months be 11/01/2010 and another six months be 05/01/2011.  Your desired results have gaps of 180 days, 93 days then 181 days.
Not sure why the script isn't working for you, maybe you should try Date.parse(DateTimeField1.rawValue).  The rawValue will always be in yyyy-mm-dd format, where the formattedValue will vary depending on locale and display patterns.
Regards
Bruce