I am analyzing phonegap usage for 4 mobile apps which will be created for 

* iOS (iPhone & iPad 4.2.1+)
* Android (2.2+)
* Blackberry(5.0+)
* Windows phone (7+)

I could not find native support for push notifications in phonegap. Though I could google for push notification support for iOS and Android using different frameworks like pushwoosh and urban air. 

Is there a common framework which can address push notifications for all the above mentioned platforms?