title: HTML Button with up/over/down states from png
body: <p>I have three png files for my up/over/down button states.  </p>
  
  <p>How do I make such a button in html?</p>
  
  <p>Looking for something like:</p>
  
  <pre><code>&lt;button id="myButton" upState="upstate.png" downState="downstate.png" overState="overState.png" onClick="someFunction()"/&gt;
  </code></pre>
  
  <p>Obviously that's not how it works.  But that's how I want it to work.  What is the easiest/best way to make such a button.  No flash allowed.</p>