title: What kind of CSS attributes are these?
body: <p>What are these types of attributes called?</p>
  
  <pre><code>data-role=
  data-theme=
  data-position=
  data-display=
  </code></pre>
  
  <p>Those specific attributes are coming out of Phonegap but I've seen these in other web frameworks.  Are these custom or part of CSS3?</p>