Make an image appear and disappear after x time

Question

If I have a button on my screen that I want to make a box appear when clicked, how would I go about doing that? It also needs to disappear after 10 seconds. I am not sure if this is an issue, but it needs to appear on the screen while everything else is happening underneath it. So the rest of the animation must continue on as this appears above it.
Thanks in advance.

Answer 1

yourbutton.addEventListener(MouseEvent.CLICK,btnF);
function btnF(e:MouseEvent){
vizF(yourbox,true);
setTimeout(vizF,10000,yourbox,false);
function vizF(dobj:DisplayObject,b:Boolean){
dobj.visible=b;