Can't stop a Tween, for the life of me!

Here’s my Problem…

I have been writing a Flash Web App that basically reads a master XML file, which is just a list of XML files that are scenarios for a client. Its like an image Gallery, except instead of Images its a series of Scenarios that show all the great abilities of the Product.

My problem is that I have created an interval based animation with the Tween Class, and it works fine except when the User Clicks the next Scenario Button, there is always an Object or two that stays behind and animates.

Here’s a link to test version, Click Next Scenario while Scenario Is Animating.
http://www.baysdesign.com/OTRBweb/physician.html

Here’s an Attached .as File that contains all the code for the Scenario Builder