Bug 206603 Table column is not rendered in pdf if its width is set in ems
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/PDFAbstractLM.java
((PDFBlockStackingLM)parent).setKeepWithNext(true);
			}
		}
		
	}
	protected boolean canPageBreak( )
	{
		if ( !context.allowPageBreak( ) )
		{
			return false;
		}
		
		PDFAbstractLM p = parent;
		while ( p != null )
		{
			if ( !p.allowPageBreak( ) )
			{
				return false;
			}
			p = p.getParent( );
		}
		return true;
	}
	protected boolean needPageBreakBefore(String pageBreak )
	{
		boolean ret = hasMasterPageChanged( );
		if ( IStyle.CSS_ALWAYS_VALUE == pageBreak
				|| IStyle.CSS_LEFT_VALUE == pageBreak
				|| IStyle.CSS_RIGHT_VALUE == pageBreak
				|| IStyle.CSS_SOFT_VALUE == pageBreak)