Flash date and time and coutdown timer

does any one know of any good countdown timer's for flash which i can use to be implemented in a flash game or quiz ?

also i have 开发者_如何转开发the following line of code

var endDate:Date = new Date(2010,7,30);

how would i go about having the endDate to be the current time and date + 30 minutes ?

thanks

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this is to add 30 minutes to the current time

var min:Number = 30;
var mSecs:Number = min * 60 * 1000;
var sum:Number = mSecs + date.getTime();

var newTime:Date = new Date(sum);