title: how to implement multiprocessing in phonegap
body: <p>I want to implement multiprocessing or background processing in <code>phonegap</code>. I want some solution that can work on iPhone and android. I'm beginner of <code>phonegap</code> and don't have much knowledge.
  But I've come to know about using the plugins to use with native code.
  But I don't want to use anything native, I want to accomplish the task using <code>javascript/phonegap/html</code> so the solution works on all supported platforms.
  I've tried webworkers but it seems that these are not supported.
  Can anybody share their experience in this regard? </p>