Bug 312531 Highlight works differently when run SvgInteractivityViewer.java [13]
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGInteractiveRenderer.java
private String defaultCursor = "cursor:pointer"; 
		
	/**
	 * Indicates if onload method of data points has been added. This map is
	 * used for saving states of multiple series and data points.
	 */
	private Map<Object, Boolean> mapOnloadAdded = new HashMap<Object, Boolean>( );
	
	private int iFirstDataPointIndex = -1;
	public SVGInteractiveRenderer( ULocale locale )
	{
		if ( locale == null )
			this.locale = ULocale.getDefault( );
		else
			this.locale = locale;
	}
	public void setIUpdateNotifier( IUpdateNotifier iun )
	{
		this._iun = iun;
	}
	public void setSVG2D( SVGGraphics2D svg2D )
	{
		this.svg_g2d = svg2D;
	}
	/**
	 * Groups the svg drawing instructions that represents this primitive
	 * events. Each group is assigned an id that identifies the source object of
	 * the primitive event
	 * 
	 * @param pre