Bug 144077 Throw exception when generate SVG chart which has inteactive
There is a program mistake in "org.eclipse.birt.chart.device.svg" project. In "SVGInteractiveRenderer" class, "findCategorySeries" method, "getSeries( ).get( 1 )" should be changed to "getSeries( ).get( 0 )". It will throw exception when generate SVG chart which has inteactive. And i find this in 2.1RC3a.
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGInteractiveRenderer.java
}
	
	public Node getHotspotLayer( )
	{
		return hotspotLayer;
	}
	public void createHotspotLayer( Document dom )
	{
		hotspotLayer = dom.createElement( "g" ); 
		hotspotLayer.setAttribute( "id", "hotSpots" ); 
		hotspotLayer.setAttribute( "style", "fill-opacity:0.01;fill:#FFFFFF;" ); 
	}
	private ULocale getULocale( )
	{
		return locale;
	}
	private boolean isColoredByCategories( )
	{
		return this._iun.getRunTimeModel( ).getLegend( ).getItemType( ) == LegendItemType.CATEGORIES_LITERAL;
	}
	
	private void addJSCodeOnElement( StructureSource src, Trigger tg, Element elm, String scriptEvent, int type )
	{
		final Series seRT = (Series) getElementFromSource( src,
				StructureType.SERIES );
		if ( seRT != null )
		{
			Series seDT = null;
			String groupIdentifier = null;