title: AS3 TweenLite Issue
body: <p>I'm using tweenlite to move several objects around in my flash, however I have a weird issue that seems to only affect Firefox. Chrome/IE play the swf no problem.</p>
  
  <p>In my fla, I have a function that executes around 10 different tweens, some of them with onComplete callbacks to execute other tweens and change some variables. It seems in firefox only those tweens with callbacks are not getting executed. I was considering using timelinelite however a lot of variables get changed/set so I'm not sure if the timeline class can do that.</p>
  
  <p>Below is a bit of sample code, none of the ExternalInterface.call("debug","x"); commands inside the onComplete callbacks execute in firefox. In chrome/ie it does.</p>
  
  <p>If someone can take a look and let me know what I'm doing wrong I'd appreciate it!</p>
  
  <pre><code>function expandPanel():void {
              // I've removed a lot of code, but again none of the debug queries are executed in firefox
      ExternalInterface.call("debug","1");
      Content_2.MainImage.alpha = 0;
      Content_2.Text_Title.alpha = 0;
      ExternalInterface.call("debug","2");
      Content_2.visible=true;
      tmpTimer.stop();
      Controller.y = -140;
      ExternalInterface.call("debug","3");
      TweenLite.to(HoverBG, .5, {delay:0, y:-70, alpha:0, onComplete:function():void{
          ExternalInterface.call("debug","4");
          // some code here
      }});
      Content_2.Text_1.x = 940;
      Content_2.Text_2.x = 940;
      ExternalInterface.call("debug","5");
      TweenLite.to(Content_2.MainImage, 1, {delay:0, alpha:1});
      TweenLite.to(Content_2.Text_Title, 1, {delay:0, alpha:1});
      ExternalInterface.call("debug","6");
      TweenLite.to(Content_2, .5, {delay:0, alpha:1, y:0, onComplete:function():void{
          ExternalInterface.call("debug","7");
          TweenLite.to(Content_2.Text_1, 1, {delay:.3, x:310, ease:Back.easeOut});
          TweenLite.to(Content_2.Text_2, 1, {delay:.6, x:310, ease:Back.easeOut});
          ExternalInterface.call("debug","8");
      }});
      ExternalInterface.call("debug","9");
  }
  </code></pre>