Bug 214254 Expose Javascript "event" object for interactivity
When doing interactivity with a chart, and specifying a Mouse Click event with an Invoke Script action, the browser event object should be passed into the script. This object should be named "evt", and accompany the other standard category and value series parameters.
chart/org.eclipse.birt.chart.reportitem.ui/src/org/eclipse/birt/chart/reportitem/ui/ChartReportItemBuilderImpl.java
Messages.getString( "ChartReportItemBuilderImpl.log.UnableToLocate" ) ); 
				return Window.CANCEL;
			}
			final CommandStack commandStack = eih.getRoot( ).getCommandStack( );
			final String TRANS_NAME = "chart builder internal transaction"; 
			commandStack.startTrans( TRANS_NAME );
			final ChartReportItemImpl crii = ( (ChartReportItemImpl) item );
			final Chart cm = (Chart) crii.getProperty( ChartReportItemUtil.PROPERTY_CHART );
			final Chart cmClone = ( cm == null ) ? null
					: (Chart) EcoreUtil.copy( cm );
			
			
			final Object[] applyData = new Object[2];
			
			
			this.extendedHandle = eih;
			
			Shell parentShell = null;
			if ( PlatformUI.isWorkbenchRunning( ) )
			{
				parentShell = PlatformUI.getWorkbench( )
						.getDisplay( )
						.getActiveShell( );
			}
			final ChartWizard chartBuilder = new ChartWizard( parentShell );
			ReportDataServiceProvider dataProvider = new ReportDataServiceProvider( eih );
			IChartDataSheet dataSheet = new StandardChartDataSheet( eih,
					dataProvider );
			final ChartWizardContext context = new ChartWizardContext( cmClone,
					this,