Help to Resize and move a box with Actionscript please

Hi! Id like to make a semi-transparent box with Actionscript move around the stage and resize when you click a button with actionscript. Id like it to fade in and move upon opening, then move and resize depending on the button you push. Ive attached a sample of what Id like it to look like.

Im thinking Id like it to be a function like…

MovieClip.prototype.backBox = function (boxHeight, boxWidth ,NewPosX, NewPosY)

so I can call it from a button instance something like …

MenuNav.b1.onRelease = function ()
{
    backBox(300, 400, 100, 100);
};

This is going to be the background box for my pages. I assume it will have to have something in there that remembers the old position, and size and gradually resizes it and moves it to a new position. But youre the experts :slight_smile:

TIA,
Rich