Controlling the "zoom" effect

Hey there again,

Is there a way to control the zoom effect in the AC3? I have a zoom effect and I need to adjust how far it goes, is this possible?

This is the code from the function:

     var myTransition2Manager:TransitionManager = new TransitionManager(content_mc);
     myTransition2Manager.startTransition({type:Zoom, direction:Transition.IN, duration:1.5, easing:Regular.easeIn});

And this is the link to the site

Thanks