Restrict Session In One Browser!

[Alexander Khoo]

Dear users,
 
Can anyone help on restricting 1 session per browser? 
what we are trying to archieve here is when the users sucessfully login to our 
server & establish a session, we want that session to lock in that current 
browser & when another browser is open it show the previous login page again!!!
 
Please Help!!!
 
Regards,
Jujai