title: how to add an info window on kml layer in a google map using javascript
body: <p>I want to add an info window on a kml layer in a google map, It should be display when mouseover on a country. I tried to add info window but it was not successful I can add info window any point of google map and on a marker, but I need to add an info window on a kml layer when mouseover on a country.</p>