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 seRT = (Series) getElementFromSource( src,
				StructureType.SERIES );
		if ( seRT != null )
		{
			Series seDT = null;
			String groupIdentifier = null;
			
			
			if ( isColoredByCategories( ) )
			{
				seDT = findCategorySeries( seRT );
				final int baseIndex = ( (DataPointHints) src.getSource( ) ).getIndex( );
				StringBuffer sb = new StringBuffer( );
				sb.append( "'" );
				sb.append( seDT.hashCode( ) );
				sb.append( "index" ); 
				sb.append( baseIndex );
				sb.append( "'" );
				groupIdentifier = sb.toString( );
			}
			else
			{
				try
				{
					seDT = findDesignTimeSeries( seRT );
				}
				catch ( ChartException e )
				{
					logger.log( e );