anychart.onDocumentReady(function () {
var chart = anychart.radar();
var series = chart.area([
{x: "January", value: 3},
{x: "February", value: 6},
series.tooltip({background: {stroke: "2 #cc8800", fill: "#808080 0.5"}});
chart.title("Set tooltip parameter as an object");
chart.container("container");