title: Insert an image inside the <a> tag of wp_nav_menu
body: <p>I am trying to build a menu in WordPress that has an image above the link and the text below the link.</p>
  
  <p>I would like it to be dynamic and using the built-in WordPress menu function. I see so many hacks stating use CSS to make it a background image yet that doesn't make the image clickable.</p>
  
  <p>Is there a way to get WordPress to add an <code>&lt;img&gt;</code>- or <code>&lt;span&gt;</code>-tag inside the <code>&lt;a&gt;</code>-tag?</p>