Display message and Save record

Hi Folks,
Is there a way to display a message to a user before saving a record using custom javascript?

Has anyone done this before?

Requirement:
User Creates a New Contact and Clicks "Save"
--> Message will be displayed: Are you sure you want to set the Status to Gold?
--> User Clicks "OK" --> record will be saved.
--> User Clicks "Cancle" --> back to edit mode.

Thanks,
Royston