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
* get style of this area
	 */
	public IStyle getStyle( )
	{
		return style;
	}
	/**
	 * get X possition of this area
	 */
	public int getX( )
	{
		return x;
	}
	/**
	 * get Y position of this area
	 */
	public int getY( )
	{
		return y;
	}
	public void setPosition( int x, int y )
	{
		this.x = x;
		this.y = y;
	}
	/**
	 * set width of this area
	 * 
	 * @param width
	 */