title: Google maps v2 vs. v3
body: <p>I am using mostly google maps version 2 on my pages, but now I am trying to work from an example which is v3.  Should that be ok?  Will it have any strange effects on my application?</p>
  
  <p>What is the best way to smoothly upgrade in versions of google maps in an application?</p>
  
  <p>Thanks,
  Alex</p>