Long back I had written an article on typing text in indian languages. Check this link.

Now with Bookmarklets Google has made it much simpler. Just follow the tutorial provided by google and you will be able to type in Indian language on any web site without hassles.  You will have to add a Javascript to your browser favorites and enable the bookmarket for the website. Once it is enabled you will get a message saying the same. Once done you can happily type in your language on the website…!

As of now google is provididng bookmarklets for Hindi, Kannada, Malayalam, Tamil, Telugu and Arabic.

Check this link to enable it for your browser.