Beside the google maps api and jquery mapped contact form uses jquery.validate for fancy offline validation. Jquery.form is used to send and ajax request with the entries to a simple php backend. The backend php script just sends an email with the input.
It was a bit tricky to make the form and the jquery plugins playing well inside the map info window. But finally i found a nice solution. Thats how it looks like:
Mapped contact form works really well if you have multiple offices or stores and offer a user friendly way to contact each of them.
It’s available in different flavours for some dollars: