Bug 313882 [Regression]pageoverflow plus pagebreakinternal shows different pdf pages in web viewer and preview
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/nLayout/area/impl/ContainerArea.java
return height - boxStyle.getTopBorderWidth( )
					- boxStyle.getBottomBorderWidth( )
					- localProperties.getPaddingBottom( )
					- localProperties.getPaddingTop( );
		}
		else
		{
			return height;
		}
	}
	/**
	 * get allocated width
	 * 
	 * @return
	 */
	public int getAllocatedWidth( )
	{
		if ( hasStyle )
		{
			return width + localProperties.getMarginLeft( )
					+ localProperties.getMarginRight( );
		}
		else
		{
			return width;
		}
	}
	/**
	 * get allocated height
	 *