Unable to detect localized date formatted cells

What steps will reproduce the problem?
1. open an excel file and create a cell with this value 40025.64539621528
2. apply on excel a date formatter using localized format (the formatter
shows an asterisk before the formatter in excel, see picture attached)
3. use getCell on the cell. 

What is the expected output? What do you see instead?
The code in sheet.as that analyzes and tries to guess the cell formatter
fails detecting date and returns the number version, also forcing the date
detection fails due to the +1 in the "d.date += cellValue +1" code row.

What version of the product are you using? On what operating system?
Latest (from download section) Mac and Windows, i've checked on the svn and
the code is the same.

Please provide any additional information below.
I had to do copy and paste from the cell.as area and also remove the "+1"
from the d.date += cellvalue to let the code work flawlessy, otherwise it
was wrong regarding the day (it was some days forward).

var d:Date = new Date();
d.hours = 0;
d.minutes = 0;
d.seconds = 0;
d.milliseconds = 0;
d.fullYear = 1899;
d.month = 11;
d.date = 30;
d.date += cellValue; //removed +1

Original issue reported on code.google.com by neog...@gmail.com on 9 Aug 2009 at 6:54

Attachments:

[Picture 22.png](https://storage.googleapis.com/google-code-attachments/as3xls/issue-18/comment-0/Picture 22.png)
wrongdates.xls

aoiu / as3xls

Unable to detect localized date formatted cells #18