title: Add get directions link to InfoWindow Google maps V3
body: <p>Back with another google maps V3 question.
   Here’s the background; I now have a map populated by a number of markers with info windows and what I want to do is add a link in the info Window that when pressed opens another browser window with google maps directions info in it.
  I'v read a number of tutorials including the one by Mike Williams but most of them are either written for V2 of the API or just plain don’t seem to work, so do any of you good people know of a good noob tutorial that can give me some idea how to do this?</p>
  
  <p>Thanks in advance      </p>