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
IUIServiceProvider
{
	private static int iInstanceCount = 0;
	private transient ExtendedItemHandle extendedHandle = null;
	private transient String taskId = null;
	private static ILogger logger = Logger.getLogger( "org.eclipse.birt.chart.reportitem/trace" ); 
	/**
	 * The constructor.
	 */
	public ChartReportItemBuilderImpl( )
	{
		super( );
	}
	/**
	 * Open the chart with specified task
	 * 
	 * @param taskId
	 *            specified task to open
	 */
	public ChartReportItemBuilderImpl( String taskId )
	{
		super( );
		this.taskId = taskId;
	}
	/*