Copyright: Copyright 1998-2005  W3C (MIT, ERCIM, Keio), All Rights Reserved.
See http://www.w3.org/Consortium/Legal/.
Author: Kenichi Kubota, Panasonic
Version: Jan. 31, 2000, v1
Module: SMIL Timing & Sync Module
Feature: computing active duration attribute
File Name: begin-marker.smil
Media Components: 1 JPG
Expected Behavior: image shown for 3s 
<t:par dur="5s">
<t:img style="width:100;height:100" src="../images/smile.jpg" begin="2s" dur="5s" />
</t:par>