Flash CS5 Actionscript 3.0 Go to Next Frame and Play Code

I am coding a simple movie timeline in Flash CS5 actionscript 3.0. I have all my buttons working except for the Play button which I would like to code to say "go to next frame and play". Here is my current actionscript can anyone help me to find the correct code?

fastforwardBtn.addEventListener(MouseEvent.CLICK, fl_ClickToGoToAndStopAtFrame);

function fl_ClickToGoToAndStopAtFrame(event:MouseEvent):void
{
gotoAndStop(4025);
}

stop();

gotoStopBtn.addEventListener(开发者_StackOverflow社区MouseEvent.CLICK, fl_ClickToGoToAndStopAtFrame_2);

function fl_ClickToGoToAndStopAtFrame_2(event:MouseEvent):void
{
    gotoAndStop(1);
}


gotoPlayBtn.addEventListener(MouseEvent.CLICK, fl_ClickToGoToAndPlayFromFrame);

function fl_ClickToGoToAndPlayFromFrame(event:MouseEvent):void
{
    gotoAndPlay(1);
}

stopBtn.addEventListener(MouseEvent.CLICK, fl_ClickToGoToNextFrame_2);

function fl_ClickToGoToNextFrame_2(event:MouseEvent):void
{
    nextFrame();
}

playBtn.on (release) ;{
_root.gotoAndPlay(_currentframe+1);
}

playBtn.addEventListener(MouseEvent.CLICK, fl_Click_Play);

function fl_Click_Play(event:MouseEvent):void
{
    MovieClip(root).play();
}

should work, if you have a simple fla. And if that doesn't seem to work, you may need something like this to target the right path:

MovieClip(this.parent).play();

Without knowing your fla structure, its just a guess ;)

also = _root is AS2, and always targets _level0. This is changed in AS3 to just "root", and targets the timeline of the topmost displayObjectContainer.