ems
  // note that months are zero-based in the JavaScript Date object, so month 3 is April
  var items = new vis.DataSet([
	{start: new Date(2015, 0, 10), end: new Date(2015, 0, 11), group:"Formula E", className:"openwheel", content:"Argentina",id:"531@motocal.net"},
	{start: new Date(2015, 0, 22), end: new Date(2015, 0, 26), group:"WRC", className:"rally", content:"Rallye Monte-Carlo",id:"591@motocal.net"},
	{start: new Date(2015, 1, 4), end: new Date(2015, 1, 8), group:"MotoGP", className:"motorcycle", c