Bug 139391 [Regression]Chart interactivity didn't work well
Steps to reproduce: 1.Add a chart, add a drill-through interactivity to chart title 2.Preview in Web Viewer, click chart title Expected result: Link to the target report, and the report display in a new window correctly Actual result: Link to the target report in the "_self" window, and display the target report incorrectly (see the sreenshot)
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGInteractiveRenderer.java
}
	/**
	 * Prepare event handling
	 */
	public void prepareInteractiveEvent( Element elm, InteractionEvent ie,
			Trigger[] triggers )
	{
		
		cacheEvents.add( new CacheEvent( elm,
				ie.getStructureSource( ),
				triggers ) );
	}
	/**
	 * Process events that have been prepared and apply them to the SVG Elements
	 */
	public void addInteractivity( )
	{
		for ( Iterator iter = cacheEvents.iterator( ); iter.hasNext( ); )
		{
			CacheEvent cEvent = ( (CacheEvent) iter.next( ) );
			addEventHandling( cEvent.getElement( ),
					cEvent.getSource( ),
					cEvent.getTriggers( ) );
		}
	}
	/**
	 * Add event handling to the hotspot
	 */
	private void addEventHandling( Element elm, StructureSource src,
			Trigger[] triggers )