anychart.onDocumentReady(function () {
var chart = anychart.line([2, 5, 1, 8], [6, 3, 8, 4], [10, 6, 13, 1]);
var series1 = chart.getSeries(0);
var series2 = chart.getSeries(1);
var series3 = chart.getSeries(2);
var palette = anychart.palettes.markers();
palette.itemAt(1, 'cross');
chart.markerPalette(palette);
chart.title('Set marker by index');
chart.container('container');