    <!--
                Copyright: Copyright 1998-2001 W3C (MIT, INRIA, Keio), All Rights Reserved.
    See http://www.w3.org/Consortium/Legal/.
    Author: Aaron M. Cohen
             File Name: layout-topLayout1.smil
      Media Components: 2 JPG
     Expected Behavior: Tests default topLayout behavior, and topLayout
    background color.
                        Show both topLayouts with blue backgrounds
                        At 0s show smile in one window.
                        At 2s show frown in another window.
                        At 4s smile ends, but window should not close.
                        At 5s frown ends, but window should not close.
    -->
    <smil xmlns="http://www.w3.org/2001/SMIL20/Language">
        <head>
            <layout>
                <topLayout width="320" height="240" backgroundColor="blue">
                    <region id="r1" top="0%" left="0%" right="0%" bottom="0%"/>
                </topLayout>
                <topLayout width="320" height="240" backgroundColor="blue">
                    <region id="r2" top="0%" left="0%" right="0%" bottom="0%"/>
                </topLayout>
            </layout>
        </head>
        <body>
            <par dur="10s">
                <img region="r1" src="../images/smile.jpg" begin="0s" end="4s"/>
                <img region="r2" src="../images/frown.jpg" begin="2s" end="5s"/>
            </par>
        </body>
    </smil>