title: How to trigger refresh of a div unit on a page (Example given)
body: <p>I am checking out this link : <a href="http://www.businessinsider.com/the-worlds-weirdest-etfs-that-you-can-trade-today-2011-10#market-vectors-gaming-etf-nyse-bjk-1" rel="nofollow">http://www.businessinsider.com/the-worlds-weirdest-etfs-that-you-can-trade-today-2011-10#market-vectors-gaming-etf-nyse-bjk-1</a></p>
  
  <p>The page is a slideshow where the user can either press the Next/Previous button or use the right/left arrow keys to navigate through the slideshow. Everytime the user does a navigation, the ad unit on the right sidebar does a refresh. Any idea how this can be effected? </p>