var ds1 = new Spry.Data.XMLDataSet("xmlg_latest_chart_1.xml", "chart/track",  {useCache: false, loadInterval: 50000});
var ds2 = new Spry.Data.XMLDataSet("xmlg_latest_chart_2.xml", "chart/track",  {useCache: false, loadInterval: 50000});
var ds3 = new Spry.Data.XMLDataSet("xmlg_latest_chart_3.xml", "chart/track",  {useCache: false, loadInterval: 50000});
var ds4 = new Spry.Data.XMLDataSet("xmlg_latest_chart_4.xml", "chart/track",  {useCache: false, loadInterval: 50000});
var ds5 = new Spry.Data.XMLDataSet("xmlg_latest_chart_5.xml", "chart/track",  {useCache: false, loadInterval: 50000});