Hi Gaurav,
Yes, what you suggest should work, assuming that users in the different countries have the right browser language set and you can distinguish based on that. I hope you don't have two countries using the same language but have different designs, or people with browser language set to something other then the country language. In that case you might have to provide an option for users to "change language" on the logon page, that way people could manually override the automatic browser detection.
Hth,
Simon