Countdown with getTimezoneOffset for CST

Hello All,
I found a tutorial on how to create a countdown timer using AS2. It works great but now I need to add more actionscript. Our company is releasing a brand launch in Chicago (CST) so I want the countdown timer to be the same for everyone’s computer, even if they are in NY for example. I did a trace for the offset and it returned -6hr (360min). How do I add the offset, can someone show me how to do this in actionscript please? I looked everywhere but I could not find it. I want to grab the time from the user’s computer and then add the getTimezoneOffset and subtract -6hr or 360min right?
Also, I just thought of this - when the clock hits 0 or a negative value… I want to tell my flash piece to go to the next frame so they don’t see the clock counting backwards. :slight_smile:
I pasted my AS code below and attached is my fla.
I appreciate any help.
Thank you,

this.onEnterFrame = function() {
var today:Date = new Date();
var currentYear = today.getFullYear();
var currentTime = today.getTime();
var targetDate:Date = new Date(currentYear,01,19);//12 am Feb 19th

var targetTime = targetDate.getTime();

var timeLeft = targetTime - currentTime;
var sec = Math.floor(timeLeft/1000);
var min = Math.floor(sec/60);
var hrs = Math.floor(min/60);
var days = Math.floor(hrs/24);
sec = string(sec % 60);
// would like to check if seconds are 0 or negative, if they are go to another frame
if (sec.length < 2) {
sec = “0” + sec;
min = string(min % 60);
if (min.length < 2) {
min = “0” + min;
hrs = string(hrs % 24);
if (hrs.length < 2) {
hrs = “0” + hrs;
days = string(days);
var counter:String = days + " " + hrs + " " + min + " " + sec;
time_txt.text = counter;