Keep an Open Eye was surprised that this demo does not run in IE, Firefox or Opera. The latter is surprising because Opera Mini does run on the iPhone. So both on mobile phones and PCs Sencha Touch generates code only for Webkit browsers which is primarily Apple Safari and Google Chrome [used in the screenshot above]. This is about 15% of all Web browsers in use Worldwide.
In sum, Sencha is one of the first vendors to bring full Touch+Gestures to HTML5 and specifically development for Apple iOS and Google Android on mobile devices. The routines work pretty well in PC Webkit browsers but not at all in Firefox, IE, and Opera PC browsers. Here is one Web Developer praying for rain – i.e. the quick convergence of Touch+Gestures and other mobile browser features with their PC counterparts.