Bug 148771 Bottom margin is invalid in PDF & HTML
Details: Bottom margin is invalid Step: 1.New a label. 2.New a data item. 3.New a label again. 4.Set bottom margin as -20 point Actual result: See the attach image
engine/org.eclipse.birt.report.engine/src/org/eclipse/birt/report/engine/layout/area/impl/AbstractArea.java
.getProperty( StyleConstants.STYLE_MARGIN_BOTTOM ) );
	}
	/**
	 * set allocated width
	 * 
	 * @param aWidth
	 */
	public void setAllocatedWidth( int aWidth )
	{
		int totalMarginWidth = PropertyUtil.getDimensionValue( style
						.getProperty( StyleConstants.STYLE_MARGIN_LEFT ) )
				+ PropertyUtil.getDimensionValue( style
						.getProperty( StyleConstants.STYLE_MARGIN_RIGHT ) );
		if( totalMarginWidth >= aWidth)
		{
			style.setProperty(IStyle.STYLE_MARGIN_LEFT, IStyle.NUMBER_0);
			style.setProperty(IStyle.STYLE_MARGIN_RIGHT, IStyle.NUMBER_0);
			width = aWidth;
		}
		else
		{
			width = aWidth - totalMarginWidth;
		}
	}
	public void setContentHeight( int cHeight )
	{
		height = cHeight
				+ PropertyUtil.getDimensionValue( style
						.getProperty( StyleConstants.STYLE_BORDER_TOP_WIDTH ) )
				+ PropertyUtil