title: Google maps v3 polyline tooltip
body: <p>A google maps marker object (google.maps.Marker) has a title property, so when a user moves their mouse over the marker a simple tooltip is displayed.</p>
  
  <p>There isn't a title property on a polyline (google.maps.Polyline). Is there a way I can do this / simulate this in V3? <strike>I could do this in V2</strike>, and I can't find an example for V3.</p>