Fullscreen positioning and transition

After looking through some threads in the forum, I’m still not sure on some positioning in full screen flash.

This is one of the coding I copy from one of the thread that is place on the 1st frame.

Stage.scaleMode = “noScale”;
Stage.align = “tl”;
stagebg._height = Stage.height;
stagebg._width = Stage.width;
stagebg._x = Stage.width-stagebg._width;
this.navigation._x = 50;
this.navigation._y = ???

Stage.addListener(this);
this.onResize = function():Void {
stagebg._height = Stage.height;
stagebg._width = Stage.width;
stagebg._x = Stage.width-stagebg._width;
};

  1. Lets say if i have few parts like banner, navigation,footer on the stage. But how could I tell those particular parts to go to the position that is 150px counter from the right or from the bottom? Cause now seems like everything is counted from the top left area.

  2. If, the user were to resize the window, how could I do the transition like this?