[away3d] detect loaded model

[andrew barry]

How do I detect if my model has been completely  loaded ?
I have  game loop with collision detection etc and if the models are
not all loaded then I am entering a game loop beofre all models have
been loaded?

The below is how i load a model but it doesnt tell me much when it is
loaded.

model5 = new Cube2( 1);
                        model5.material = modelMaterial2;
                        model5.z =100;
                        model5.y=50;
                        model5.x=0;
                        view.scene.addChild(model5);