Hello Sir/ Ma'am,

Whenever I log into teenchat.com and enter into any of it's javasscript chatrooms; the users over there know instantly where i am from. On asking, they say, that they have a javascript running ontheir machine which enables them to know the IP of a user, the moment he enters that room.

Please help me out by guiding me about how to write such a code/ and or give the code and guide me about how to use it effectively.

Thanking in in advance!