This is a product of the work of Krishnamurthy and family, who are trying to bring this epic text to the online community.
This version of the Bhagavad Gita is written in Kannada. To view the Online Bhagavad Gita you'll have to download and install the fonts required to display the webpage, they are available here. The instructions to install the fonts are here.
This font was created by Mr. Sheshadrivasu Chandrashekaran, Bangalore.
He has also created a windows text editor to write, publish, and e-mail documents in Kannada.
It is a very good editor and will help you write online letters, e-mails, and even webpages (like I've done here).