Cascading DropdownList

Question

Hello Friends, Kindly help me in solving my problem..

 

I have 2 drop-down lists. one is Country & other one is State. i want to display the country name in one of the dropdown lists, when i select a state name.

 

The other way round is happening(i.e- When i select country name, i am able to select state name).

Thanks in Advance..