How to get Time Zone abbreviation from client?

Hello Friends, We are trying to make our web site as timezone compatible means if any client ask for web page then it page shows its current time and that page should return me timezone details for further processing. That means if I am requesting any page from India with Time zone setting as "India" on my machine than I should able to get that TimeZone information at server side. At server side I should able to get request location, if anyone can tell me how to get TimeZone abbreviation from client side than also i could satisfy Waiting for your kind help. Sachin Jopasana Software & Systems Ltd Pune India