title: Put custom icon on Polyline / Polygon etc
body: <p>Well, I am not new to google map, but not very much experienced in it.</p>
  
  <p>I want to know how to put a CUSTOM ICON right on the middle of a polyline ?</p>
  
  <p>For clarity I attached an image, where you can see RED TRIANGLE is my custom icon, that I want to place right in the middle. I want this triangle to be CLICKABLE that will open a popup etc where I will place some form etc.</p>
  
  <p>Here is the image: </p>
  
  <p><a href="http://oi61.tinypic.com/amxhkh.jpg" rel="nofollow">http://oi61.tinypic.com/amxhkh.jpg</a></p>
  
  <p>Please Guide me / help me with code etc.</p>
  
  <p>Best Wishes and Billion Thanks in Advance !</p>
  
  <p>ZH.!</p>