Help with display elapsed time for flv

[sledneck]

Hey guys,
I'm new to using video with flash( so bare with);
I'm using version flash 8 pro;
I've been using the series goto and learn (which is great!);
One thing I would like to add is elapsed time for the flv, here is the flv file(ignore the video it's just a test);
http://www.chrissandersdesign.com/night1.flv

Right now I have two dynamic text boxes setup to display the time
the first is called - time_txt
the second is called - length_txt

I'm just not sure how of the right script to use to display how far into the video the user is and what the total length of the video is. I would like to contuine building on the goto and learn series.

Here is the code I'm using from that series:
var nc:NetConnection = new NetConnection();
nc.connect(null);

var ns:NetStream = new NetStream(nc);

theVideo.attachVideo(ns);

ns.play("http://www.chrissandersdesign.com/night1.flv");

rewindButton.onRelease = function(){
ns.seek(0);
}

playButton.onRelease = function(){//plays and pauses the movie
ns.pause();
}

var videoInterval = setInterval(videoStatus, 100);
var amountLoaded:Number;
var duration:Number;

ns["onMetaData"] = function(obj) {
duration = obj.duration;
}

function videoStatus() {
amountLoaded = ns.bytesLoaded / ns.bytesTotal;
loader.loadbar._width = amountLoaded * 274;
loader.scrub._x = ns.time / duration * 274;
}

var scrubInterval;

loader.scrub.onPress = function() {
clearInterval(videoInterval);
scrubInterval = setInterval(scrubit,10);
this.startDrag(false,0,this._y,274,this._y);
}

loader.scrub.onRelease = loader.scrub.onReleaseOutside = function() {
clearInterval(scrubInterval);
videoInterval = setInterval(videoStatus,100);
this.stopDrag();
}

function scrubit() {
ns.seek(Math.floor((loader.scrub._x/274)*duration));
}

Thank You
Chris