如何使PhoneGap iOS应用的主窗口不可拖动?

As you know, the main window of a native iOS app is usually fixed and it's not draggable, but since PhoneGap apps are browser based, so users can drag the main window up and down. Is there a solution to make a PhoneGap app fixed make it more like a native app?As you know, the main window of a native iOS ap