Bug 312531 Highlight works differently when run SvgInteractivityViewer.java [13]
chart/org.eclipse.birt.chart.device.svg/src/org/eclipse/birt/chart/device/svg/SVGInteractiveRenderer.java
*/
	public void addInteractivity( )
	{
		for ( Iterator<CacheEvent> iter = cacheEvents.iterator( ); iter.hasNext( ); )
		{
			CacheEvent cEvent = iter.next( );
			addEventHandling( cEvent.getElement( ),
					cEvent.getSource( ),
					cEvent.getTriggers( ),
					cEvent.getCursor( ) );
		}
	}
	/**
	 * Add event handling to the hotspot
	 */
	private void addEventHandling( Element elm, StructureSource src,
			Trigger[] triggers, Cursor cursor )
	{
		if ( elm != null && triggers != null )
		{
			if ( triggers != null && triggers.length > 0 )
			{
				setCursorAttribute( elm, cursor, defaultCursor );
			}
			
			
			
			boolean redirect = false;
			for ( int x = 0; x < triggers.length; x++ )
			{