google maps API highlight areas

Question

Is there a way to highlight areas with Google Map JS API v3?

I've seen some websites do it

here are some examples:

• http://www.streetadvisor.com/new-allakaket-yukon-koyukuk-alaska
• http://www.homely.com.au/werribee-wyndham-melbourne-greater-victoria
• http://www.realestate.com.au/neighbourhoods/upwey-3158-vic

Answer 1

This is called a polygon.

See the Google Docs for information.

You can manually set polygon points in JS.