                shadowBlur: 40,
                        shadowOffsetX: 0,
                        shadowOffsetY: 0,
                        shadowColor: 'rgba(0, 0, 0, 0.4)',
                        borderWidth: 2
                    }
                };

                chart.setOption({
                    title : {
                        text: '漏斗图',
                        subtext: '纯属虚构'
                    },
                    tooltip : {
                        trigger: 'item',
     