Bug 315035 [Automation][Regression]Error happened while merge cells in grid when preview as pdf/ppt/ps
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/nLayout/area/impl/TableLayout.java
}
				}
			}
		}
	}
	/**
	 * get column style
	 * 
	 * @param columnID
	 * @return
	 */
	private IStyle getColumnStyle( int columnID )
	{
		
		return null;
	}
	private int getAllocatedHeight( AbstractArea area )
	{
		if ( area instanceof ContainerArea )
		{
			return ( (ContainerArea) area ).getAllocatedHeight( );
		}
		return area.getHeight( );
	}
	private int getAllocatedWidth( AbstractArea area )
	{
		if ( area instanceof ContainerArea )
		{
			return ( (ContainerArea) area ).getAllocatedWidth( );
		}