//var balloons:Array = [mcBalloonPink, mcBalloonGreen, mcBalloonRed];
//class names in library: Balloon1, Balloon2, Balloon3

var balloons:Array=[];
var tweens:Array = [];

function spawnRandomBalloons(te:TimerEvent):void
{
    var i:uint = Math.floor(Math.random() * 3)
    var cls:Class = getDefinitionByName( "Balloon" + i ) as Class;
    var balloon = new cls();

    balloon.x = 450;
    balloon.y = Math.floor(Math.random()*(1 + topBoundary - bottomBoundary)) + bottomBoundary;

    var tween:Tween = new Tween(balloon, "x", None.easeNone, 450, -450, 3, true);
    tween.addEventListener(TweenEvent.MOTION_FINISH, destroyTweenedObj);

    mcGullGame.addChild(balloon);
    balloons.push(balloon);
    tweens.push(tween);
}

function checkBalloons(event:Event):void
{
    for(var i:uint=0; i balloons.length; i++)
    {
        if(balloons[i].hitTest(bird))
        {
            mcGullGame.removeChild(balloons[i]);
            balloons.splice(i,1);
            break;
        }
    }
}