title: Blackberry App for OS 7.0 and earlier, with blackberry 10 support
body: <p>I have to develop a BlackBerry application which runs on all the devices running blackberry OS 7.0 and earlier, and can run on BlackBerry 10 devices, too. How can I do that? </p>
  
  <p>Is a WebWorks application able to support all the above platforms? If yes, there's no IDE for WebWorks development .. how shall I code for that?</p>