Copyright: Copyright 1998-2005  W3C (MIT, ERCIM, Keio), All Rights Reserved.
See http://www.w3.org/Consortium/Legal/.
Author: Alain Uginet, Oratrix
   File Name: linking-ext-show-def.smil
   Media Components: 1 JPG
   Goal: test the default value of the show attribute with an external link
   Expected behavior: if you click on the smile image, you should render an external document 
		(with the 'destination' text inside), and the smile should be disapeared. 
<smil xmlns="http://www.w3.org/2005/SMIL21/Language">
        <region id="region1" width="400" height="400" />
		<img id="test" region="region1" src="../images/smile.jpg" dur="5s" >
			<area title="shapetest" href="destination.smil" />