Back button on Droid doesn't work right on web app where the iPhone one does

[artsnob]

I have a simple mobile site I developed in Visual Studio 2010 that you can observe at www.tofimfest.ca/tiffwidget. There are two pages -- one for user input and another one for displaying a list based on that input. With an iPhone, you can go back to the first page from the list using the iPhone's built-in back button, put in a new set of criteria, and generate another list; with a Droid, you can go back to the first page in a similar fashion, but the page is no longer functional -- you cannot generate another list without first refreshing the page I've experimented with disabling caching and using pagestatepersister, but I simply cannot overcome this mega-nuisance. Has anyone else encountered this issue and figured out a workaround?