How to get option id in select box using jquery ?

How to get option id in select box using jquery ?

Hi All,
 
Please any one help to get option id in select box using jquery ?
 
Example
if i will select same4 option i have to get one alert box it will show id of same4 option i.e 4. How we can do it .Please any one give reply

<

select >

<

option id = "1" value = "same" > same1 </ option >

<

option id = "2" value = "same" > same2 </ option >

<

option id = "3" value = "same1" > same3 </ option >

<

option id = "4" value = "same" > same4 </ option >

</
select >
 
Thanks,
Nazeer