Hello:

I am working on building a weather application.
The home screen is going to be just a bunch of boxes such as temperature, precipitation, date/time etc. that update every few seconds.
It will also have a button where you can save preferences like a zip code or update frequency.

Now when the user clicks on one of those boxes, it should take him to a more detailed screen where he can view more information. He will be able to take a look at a graph (i.e. see how the temperature has progressed during the last 24h).
In case he click the "Setup" button, it should take him to the widget configuration screen.

My question is:
What is the best way to program this kind of behavior for this app.
Everytime, the user clicks on a button, should I load an external SWF or keep doing everything on the same SWF?