Copyright: Copyright 1998-2005  W3C (MIT, ERCIM, Keio), All Rights Reserved.
See http://www.w3.org/Consortium/Legal/.
Author: Aaron M. Cohen   
         File Name: layout-subregion1.smil
  Media Components: 1 JPG
 Expected Behavior: Tests subregion positioning layout with topLayout element.
                    Show one topLayout.
                    At 0s show smile image with upper-left at upper-left corner for 2s.
                    At 2s show smile image with upper-left at upper-mid corner for 2s.
                    At 4s show smile image with upper-left at mid-left corner for 2s.
                    At 6s show smile image with upper-left at mid-mid corner for 2s.
<smil xmlns="http://www.w3.org/2005/SMIL21/Language">
           <topLayout width="640px" height="480px">
               <region id="whole" top="0px" left="0px" width="640px" height="480px" />
                <img id="img1" region="whole" src="../images/smile.jpg" top="0%" left="0%" dur="2s"/>
                <img id="img2" region="whole" src="../images/smile.jpg" top="0%" left="50%" dur="2s"/>
                <img id="img3" region="whole" src="../images/smile.jpg" top="50%" left="0%" dur="2s"/>
                <img id="img4" region="whole" src="../images/smile.jpg" top="50%" left="50%" dur="2s"/>