title: Changing a web page's skin using AJAX
body: <p>I've got a cookie set up to store the user's theme preference, etc., but I've never used AJAX before, so I could use a little help.</p>
  
  <p>I found <a href="http://www.w3schools.com/ajax/default.asp" rel="nofollow">this simple little AJAX tutorial</a>, which is enough to get me started, but I'm not sure if I'd be better off having the server send pretty much the entire web page all over again, with the updated theme, or -- if it is possible -- having the server send a script that would modify the page, keeping the content intact, but changing the div, etc. properties in order to achieve the new look.</p>
  
  <p>Thoughts? Comments? "You're doing it wrong, moron"?</p>
  
  <p>Thanks in advance!</p>