disable the ios5 notification centre pulldown

I am developing a webapp/magazine engine which relies on the pulling down of a titlebar to gain access to the table of contents. The ios5 notification center is causing a huge conflict when the site is saved to the home page. While I can appreciate the feature of having an 'always there' solution for the notification center, is there some way of turning it off?

It's worked so well for the past two months during development, but now it's a crap shoot as to whether they touch the right spot on the screen to get MY function or APPLE's...

I was hoping there would be a viewport setting or one of the 'apple-mobile-web-app' settings.