autocomplete field simple script

Hi All I need sa simple autocomplete field [login to view URL] like you can see search field at top of [login to view URL] When you type any word in this value related to that comes in dropdown. I want that these value comes from database and from three [login to view URL] country,state and city [login to view URL] somebody type 'A' all country,state and city from 'A' comes in dropdown like in example. This is very simple job and i will not pay more than 10$ Thanks