Abstraction of Adobe AIR File API for HTML5

We are currently developing a HTML5 based mobile app and we want to make this app runnable in Adobe AIR. For this reason we are looking for a programmer to build an abstraction of the PhoneGap (HTML5) File class for the implementation in Adobe AIR so that we are able to use the existing PhoneGap based Javascript functions for accessing the filesystem without modification. The specifications for the PhoneGap File implementation can be found here: [login to view URL] The Adobe AIR Javascript API can be found here: [login to view URL] The work can be done completely offline (@home)