Configuring a key to execute a button

Hi guys,

i'm pretty sure this is quite simple to do, but i'm very newbie in Flash yet...

I just wanna easy way to add a function integrated in my button script (in the timeline, not inside the button)

e.g.: When i press "right arrow", it'll execute the "btn_next" button ("play();")

at moment, my AS in the timeline is:

stop();

btn_next.onRelease = function(){

          play()

}

btn_recu.onRelease = function(){

          gotoAndStop(1)

};

i'm looking for something like:

stop();

btn_next.onRelease = function(){

    if(Key.isDown(Key.RIGHT)) {

          play();

    }

}

btn_recu.onRelease = function(){

    if(Key.isDown(Key.LEFT)) {

       gotoAndStop(1)

     }

};

This is obviously wrong, just an exemple!