Most documents on this site have been created using ITRANS or JTRANS for getting Devanagari output. These files can also be modified to get output in other Indian languages. You can refer to the Devanagari transliteration map for details of the transliteration scheme.
The ITRANS devanagari output is available in multiple formats - postscript or gif or as XDVNG web pages.
You will need a postscript viewer to view and print .ps files or these can be directly printed on a postscript printer.
The XDVNG web pages use the FONT FACE feature of the browsers to display the page using Devanagari script. Please download and install XDVNG fonts for your system.