title: back button in lwuit with blackberry
body: <p>I developed an mobile application using LWUIT and it works fine in devices with J2ME.
  I want to run the same application in Blackberry also.
  I saw some samples about LWUIT on Blackberry but none of them answered me.</p>
  
  <p>How can I handle the back button on the device to make back movements?
  What I mean is that, when I press the back button on the device, I want the application move to the previous screen.</p>
  
  <p>I used regular buttons to handle back movements just for now, but when we think of user side, it is not so friendly.</p>
  
  <p>I dont want to use commands like I did in j2ME app., because it seems not so nice.</p>
  
  <p>Is there anyone who can solve it?</p>