HTML and JavaScript Documents in tree view and Preview functionality

Hello,
I want to build an html control that will be having two sides.

- Left hand side will show all the files in a tree view. The file can be of any type like: word, Text etc.
- Right Hand side will show the preview of the document selected in Tree view on the left hand side.

I didn't find FileReader working in IE 10. On chrome it reads xml and text files only. Can you please confirm what types of file FileReader supports?

Please help.

Thanks!