Maxthon has long since escaped the days when it was chiefly a customized version of Internet Explorer on the desktop, and nowhere is that more apparent than its just-launched version of the normally WebKit-based browser for the iPhone and iPod touch. All the core features of the app carry over from earlier Android and iPad versions, such as an Opera-like grid of favorite pages, a download manager and a unified address bar, but it's arguably more useful than the iPad edition: conventional browser tabs aren't comin