title: Adding more than one destination on google map using googlemap javascript apiv3
body: <p>I want to add more than one destination  keeping the same source and get route directions to all destinations in a single time...here is the source code i want to modify it <a href="https://stackoverflow.com/questions/3896871/google-map-driving-direction-source-code-for-their-example/3898785#3898785">Google map driving direction source code for their example?</a> </p>
  
  <p>please suggest me, thanks</p>