title: Display image on top of another image on rollover
body: <p>I want to display a zoom image (on mouseover) on top of certain images to imply 'click here to zoom'. I don't want to use a cursor.</p>
  
  <p>I'm sure there's a good way to do this with javascript jQuery but I don't know it. </p>
  
  <p>Does anyone have any good ideas?</p>