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
}
	}
	/*
	 * (non-Javadoc)
	 * 
	 * @see org.eclipse.birt.chart.ui.swt.interfaces.IUIServiceProvider#invoke(int,
	 *      java.lang.String, java.lang.Object, java.lang.String)
	 */
	public String invoke( int command, String value, final Object context,
			String sTitle ) throws ChartException
	{
		final ExpressionProvider ep = new ChartExpressionProvider( (ExtendedItemHandle) context,
				getExpressionBuilderStyle( command ) );
		Shell shell = null;
		switch ( command )
		{
			case COMMAND_HYPERLINK :
			case COMMAND_HYPERLINK_DATAPOINTS :
				shell = new Shell( Display.getDefault( ), SWT.DIALOG_TRIM
						| SWT.RESIZE | SWT.APPLICATION_MODAL );
				ChartUIUtil.bindHelp( shell,
						ChartHelpContextIds.DIALOG_EDIT_URL );
				HyperlinkBuilder hb = new HyperlinkBuilder( shell, true ) {
					protected void configureExpressionBuilder(
							ExpressionBuilder builder )
					{
						builder.setExpressionProvier( ep );
					}
				};
				try