Bug 128590 Tooltip of chart didn't show completely.
Description: Tooltip of chart didn't show completely. Steps to reproduce: 1. Preview attached report. 2. Move mouse from bottom/right into the chart. Expected result: Tooltip shows. Actual result: Tooltip didn't show completely.
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGRendererImpl.java
}
			if ( !bFound )
			{
				throw new ChartException( ChartDeviceExtensionPlugin.ID,
						ChartException.OUT_OF_SYNC,
						"info.cannot.find.series", 
						new Object[]{
							seRT
						},
						ResourceBundle.getBundle( Messages.DEVICE_EXTENSION,
								getLocale() ) );
			}
			if ( i == -1 )
			{
				elSD = cwoaDT.getSeriesDefinitions( );
			}
			else
			{
				elSD = ( (SeriesDefinition) cwoaDT.getSeriesDefinitions( )
						.get( 0 ) ).getSeriesDefinitions( );
			}
			sd = (SeriesDefinition) elSD.get( j );
			elSE = sd.getSeries( );
			seDT = (Series) elSE.get( k );
		}
		return seDT;
	}
	protected void processDataPointHotspot(){	
		Iterator iter = cacheSeriesHotspots.keySet().iterator();
		Iterator valIter = cacheSeriesHotspots.values().iterator();