Integrate a Google maps solution

Hello, I have 2 versions of my website : [login to view URL] and the mobile version [login to view URL] (They are currently designed by someone, almost finish) I would like to integrate in my submit form, the search module of google maps. (not necessary google). Then when the user start tapping a street name, he sees adress suggestions. I want the same for mobile version. But I want also the geolocation option (for people who have an integrated GPS smartphone). User can choose by pushing geolocation button which display adress OR tap by hismelf the adress (then suggestions appears) I have not a big budget for that. Best prices are recommended !