Google Transliteration in Rich Text Editor

Question

I need to use Google Transliteration along with rich-text editing support.

The Google Transliteration API docs recommend the rich text-editor offered by Closure library or Yahoo! UI Library.

But, I tried both of them and the transliteration does not work.

Anybody who has implemented a rich-text editor which supports transliteration as well?

[Edit: Answer updated below]