Bug 179880 [Smoke][Automation][Regression] Preview failed in daily build 20070329
steps to reproduce - create a report design - preview report expected behavior: - report is previewed actual behavior: - failed to preview
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/html/HTMLAbstractLM.java
{
		return parent;
	}
	/**
	 * output the content.
	 */
	protected abstract void start( );
	/**
	 * output the content.
	 */
	protected void startContent( )
	{
		if ( parent != null && !parent.isOutput )
		{
			parent.startContent( );
		}
		if ( emitter != null )
		{
			ContentEmitterUtil.startContent( content, emitter );
		}
		isOutput = true;
	}
	/**
	 * end output the content
	 */
	protected void end( )
	{
		if ( emitter != null )
		{
			ContentEmitterUtil.endContent( content, emitter );