Looking for specific google map function

Looking for specific google map function

 I was wondering if there is a plugin which, if you slide a google map around, it can deliver the location of the center, or maybe provide a location that is clicked on. We need to then reverse geocode (?) that for a town in our database. I looked through the plugins and didn't find this, but it might be an option not listed visibly.

Also, I tried to log in, failed. Asked for a new password, got my link and changed it, but it still wouldn't let me log in.

Thanks for any help.