Bug 134632 SVG chart visibility interaction does not work correctly.
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGInteractiveRenderer.java
{
			final Series series = (Series) getElementFromSource( (StructureSource) pre.getSource( ),
					StructureType.SERIES );
			if ( series != null )
			{
				if ( drawText )
				{
					svg_g2d.popParent( );
					svg_g2d.popParent( );
				}
				else
				{
					svg_g2d.setDeferStrokColor( null );
					svg_g2d.popParent( );
				}
			}
		}
	}
	/**
	 * Helper function that will determine if the source object is a series
	 * component of the chart.
	 * 
	 * @param src
	 *            StructureSource that is stored in the primitive render event.
	 * @return true if the object or its parent is a series component.
	 */
	private Object getElementFromSource( StructureSource src, StructureType type )
	{
		if ( src instanceof WrappedStructureSource )
		{