title: How to set background image for button?
body: <pre><code>&lt;mx:Button id="callButton" x="35" y="6" width="202" height="45" label="Call" alpha="1.0"
  borderColor="#FFF600" click="callOneClick(event)"
  fillAlphas="[0.94, 1.0, 0.47, 0.47]" fillColors="[#FEDC00, #FEBC00]" fontSize="16"/&gt;
  </code></pre>
  
  <p>This is the button I'm using in my mxml file. How can I set <code>.png</code> background image to my button and still have button label?</p>