I'm trying to create a Flash video that loads a movie clip placeholder to fill the black space before a user clicks the video start button. Once the user clicks the start button on the control panel, I want the placeholder to fade out (using tween-lite). The code attached loads the movie, the controls and the placeholder, but I can't get the placeholder to disappear when I click the start button (the movie plays onclick but behind the placeholder.) A tip on what's wrong with this code (action script 3.0) would be welcomed. Thanks.

(This code loads the movie without playing it
but onclick does not remove placeholder)

import fl.video.*;
import com.greensock.*;

import com.greensock.easing.*;



function isPlaying(e:VideoEvent): void

{ TweenLite.to(poster, 4,{alpha:0}); }

function hidePoster(){