Porting Windows App to Android and iOS

We have a Windows 8 App roughly 80% developed in HTML5 and JavaScript. And, we would like to port it to Winows Phone App, Android, and iOS platforms. It is a simple menu program showing information and photos from the server. The program connects to our server program via WebSocket which is a Windows desktop application. The communication between the server and clients are using JSON messages. The main objectives are: - Port UI to Windows, Android and Apple mobile platforms and maintained in one project as possible. The UI menu should function like Windows’ app that would support dynamic updates. - Add PhoneGap plugin for Android RFID reader (SKD in Java provided). Program should be activated when RFID data is detected. - Add PhoneGap plugin for iOS RFID reader, [login to view URL] - Connect to server via WebSocket and display images via HTTP (working) - Using PhoneGap library wherever possible for portability. (working) - Use PhoneGap camera function to capture and upload photo to server via WebSocket. (working) - Build process needs to be documented for different platforms. The project can be built by PhoneGap build service also. (working) - Display simple JSON controls in the fly out window: support radio button, check box, text editor, label, image and basic button. (working) - Send user input back to the server in JSON data format. (working) - Maintain program performance is mandatory. jQuery might not be a good choice. We expect there would be a lot of customization requests by our clients. We would like to outsource most client side developments. We hope the porting project will be a good beginning of our cooperation.