Sorry by my english

I'm doing a web page, with combo-box off same data.

I need to know wich record the client get, how to take
the value and name off the selection see that.

Como-box  at the browser 

City         Buenos Aires
             Capital        --- >  they take this
             Cordoba
             
I need the name, and a hiden value that is a number
off city perhaps  15.-

Thanks to all sorry by my english

Julio Oliveira - Buenos Aires Argentina.