title: showing specific state of a country on gmap highlighted
body: <p>I wants to show specific state of a country as highlighted and remaining area in shadow. </p>
  
  <p>I wants to implement like 
  <a href="http://www.redfin.com/homes-for-sale#!disp_mode=M&amp;lat=29.770534985365693&amp;long=-95.21904093471284&amp;market=houston&amp;sf=1,2&amp;v=8&amp;zoomLevel=8" rel="nofollow">http://www.redfin.com/homes-for-sale#!disp_mode=M&amp;lat=29.770534985365693&amp;long=-95.21904093471284&amp;market=houston&amp;sf=1,2&amp;v=8&amp;zoomLevel=8</a></p>
  
  <p>I had searched about this and what I understand that, I needs to use overlay for that.</p>
  
  <p>I have one question,</p>
  
  <p>Would I needs to provide lat and lng for borders or it can be achieved by providing some 
  parameter like state code etc.</p>
  
  <p>Any example of showing shadow and highlighted area will be great help.</p>