Bug 176467 Wrong page break effect for spanned cell
When page break occurs on spanned cell, this cell on next page is lost, which cause incorrect page layout. Report design to reproduce the error is attached.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/html/HTMLAbstractLM.java
}
		return false;
	}
	/**
	 * execute the executor, drip all its children contents.
	 * 
	 * @param executor
	 */
	private void traverse( IReportItemExecutor executor )
	{
		assert executor != null;
		while ( executor.hasNextChild( ) )
		{
			IReportItemExecutor child = (IReportItemExecutor) executor
					.getNextChild( );
			if ( child != null )
			{
				child.execute( );
				traverse( child );
				child.close( );
			}
		}
	}
	/**
	 * execute the report and add all its contents into the content.
	 * 
	 * @param content
	 * @param executor
	 */
	protected void execute( IContent content, IReportItemExecutor executor )