Need help with as3 for popup window

Question

I am nearing the end of the semester in my Flash Animation class. I have learned very simple AS3 things, code snippets etc. I am trying to find the actionscript for coding a very simple popup window, but have not found a clue.
Here's what I want to do...I have a white box with some type on the stage. When a person clicks on the white box, I want a popup to open that is larger, that will contain the same type but larger. That box will have an x so it can be dismissed. I don't want to do this in html, only in Flash CS5. I don't want a browser window, I just want a bigger version of the smaller box. I know how to build both boxes, just don't know how to write the code. I know there will be an on-click mouse event listener, and then I am lost.
Can anyone help with the code I might use? It would be most appreciated.

Answer 1

It would be something along the lines of... (using instance names relative to your description)...
popup.visible = false;
whiteBox.addEventListener(MouseEvent.CLICK, showPopup);
function showPopup(evt:MouseEvent):void {
     popup.visible = true;
popup.popupX.addEventListener(MouseEvent.CLICK, hidePopup);
function hidePopup(evt:MouseEvent):void {
     popup.visible = false;