want to setup a dropdown menu in header for subdomains (cities and regions)

[vivekshan]

some days before i saw a website oozz.in and i like that pick your city dropdown menu
if you select city as hyderabad then hyderabad will we shown instead of pick your city

i am a leaner and dont have much knowledge about javascript
so please guide me how to that
i want to setup a dropdown menu in header for subdomains (cities and regions)
please help

[vivekshan]

is there no one to help me on this topic

[Aficionado]

We can't help you, what you ask is not an easy task.

Maybe hire someone to do it for you.