
<smil xmlns="http://www.w3.org/2005/SMIL21/Language">
  <head>
    <layout>
      <root-layout backgroundColor="#eeffcc" width="150" height="150"/>
      <region id="r" fit="fill"/>
    </layout>
  </head>
  <body>
    <par dur="indefinite">
      <img region="r" dur="indefinite" id="img1" src="../images/smile.jpg" width="150" height="150">
        <set attributeName="src" to="../images/frown.jpg" begin="2" dur="2" repeatCount="2"/>
      </img>
    </par>
  </body>
</smil>