title: what is the best way to toggle two divs in the same area
body: <p>i am loading two divs in a page: divA and divB</p>
  
  <p>i have divB display style = none.</p>
  
  <p>I have a link that says "Show viewB".  When i click this i want div B to show up where divA is and divA to hide.</p>
  
  <p>i then want the link to change to "Show viewA"</p>
  
  <p>what is the most elegant way of doing this in jquery?</p>