title: Float a div above page content
body: <p>I've implemented a popup box that dynamically displays search options.  I want the box to "float" above all of the site content.  Currently, when the box is displayed it displaces all of the content below it and looks bad.  </p>
  
  <p>I believe I've already tried setting the z-index of the box's div to above that of the remaining page content, but still no luck.</p>