title: Changing picture caption with onclick
body: <p>I have a thumbnail image that when you click it changes a larger image on the page.  So far I have the Javascript figured out for passing on the .src, .alt, and .title information that makes the picture and tool tip of the picture change.  </p>
  
  <p>The large picture has a caption underneath.  I was wondering how to also have the caption change when the thumbnail is clicked.  I'm assuming I can change it into some sort of Javascript variable but this is my first time using JS so I am still very green.</p>