Try it Live - HTML5 SVG Animation

​x
 
<!DOCTYPE html>
<html>
  <body>
    <h2>Example of SVG Animation</h2>
    <svg width="300" height="100">
      <rect id="svganimation" width="250" height="70" x="20"
       y="20" stroke-width="5" stroke="red" fill="navy" />
      <animate
        xlink:href="#svganimation"
        attributeName="x"
        from="20"
        to="250" 
        dur="3s"
        repeatCount="indefinite" />
    </svg>
  </body>
</html>
​