File management in Windows Store app using JavaScript

I'm developing a Windows Store app for Windows 8 surface with HTML/JavaCript using Visual Studio. I'm new to WinRT.

I have an /images folder next to my default.html when I created the template. How do I:

1. Open an image file from another directory(such as USB drive) and copy it to my images folder?


2. Create a sub-folder inside the images folder?


3. Delete any file/folder in the images folder?