mainpanel.add(graphpanel, "Graph");
mainpanel.add(stats_table, "Stats");
mainpanel.add(logs, "Logs");
mainpanel.add(build_data, "Version");
mainpanel.selectTab(0);
mainpanel.addBeforeSelectionHandler(new BeforeSelectionHandler<Integer>() {
public void onBeforeSelection(final BeforeSelectionEvent<Integer> event) {
clearError();
final int item = event.getItem();
switch (item) {
case 1: refreshStats(); return;