I am developing a mobile web site using Sencha Touch. In iOS7 Safari I cannot make the top address bar & the toolbar below go away. Sencha used to handle this upto iOS6 but some recent changes in iOS7 is causing this issue.
http://java.dzone.com/articles/safari-ios-7-and-html5
I read the above link & it seems this is also an issue for HTML5 Games & a few other apps.
The old window.scrollTo() which worked for iOS6 no longer works.