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
case TriggerCondition.ONKEYDOWN :
				return "onkeydown"; 
			case TriggerCondition.ONKEYPRESS :
				return "onkeypress"; 
			case TriggerCondition.ONKEYUP :
				return "onkeyup"; 
			case TriggerCondition.ONLOAD :
				return "onload"; 
		}
		return null;
	}
	protected void setCursor( Element currentElement, Cursor cursor, String defaultCursor )
	{
		setCursorAttribute( currentElement, cursor, defaultCursor );
	}
	public void clear( )
	{
		labelPrimitives.clear( );
		componentPrimitives.clear( );
		scripts.clear( );
		mapOnloadAdded.clear( );
	}
	public Node getHotspotLayer( )
	{
		return hotspotLayer;
	}
	public void createHotspotLayer( Document dom )
	{
		hotspotLayer = dom.createElement( "g" ); 
		hotspotLayer.setAttribute( "id", "hotSpots" );