Bug 178519 Problems in multi-rows header
Please see the attachments.
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/pdf/BorderConflictResolver.java
{
				case POSITION_LEFT :
					style.setProperty( StyleConstants.STYLE_BORDER_LEFT_WIDTH,
							value );
					break;
				case POSITION_RIGHT :
					style.setProperty( StyleConstants.STYLE_BORDER_RIGHT_WIDTH,
							value );
					break;
				case POSITION_TOP :
					style.setProperty( StyleConstants.STYLE_BORDER_TOP_WIDTH,
							value );
					break;
				case POSITION_BOTTOM :
					style.setProperty(
							StyleConstants.STYLE_BORDER_BOTTOM_WIDTH, value );
					break;
				default :
					assert false;
			}
		}
		public void setBorder(CSSValue style, CSSValue width, CSSValue color)
		{
			setBorderStyle( style );
			setBorderWidth( width );
			setBorderColor( color );
		}
	}
}