title: Width of div changes when position becomes fixed from relative
body: <p>The width of the div "topNav" changes by few pixels when its position style is changed from relative to fixed. I found a jquery plugin (http://imakewebthings.github.com/jquery-waypoints/) which can perform the same functionality I'm looking for elegantly, but I feel it is a overkill for this purpose.</p>
  
  <p>EDIT: My question is how to avoid changing the div sizes.</p>
  
  <p>Check out the code at :</p>
  
  <p><a href="http://jsbin.com/azace5/edit">http://jsbin.com/azace5/edit</a></p>