var control1 = new longdo.MenuBar({ button: [
  { label: 'first', value: 1 },
  { label: 'second', value: 2 }
], change: menuChange });
map.Ui.add(control1);

var control3 = new longdo.TagPanel();

var control5 = new longdo.CustomControl({ html: '<button>go</button>' })

map.Ui.remove(control1);

var buttonTh = longdo.MapTheme.ui.layerSelectorOption.th.button;
var buttonEn = longdo.MapTheme.ui.layerSelectorOption.en.button;
var layer1 = { label: 'OSM', value: longdo.Layers.OSM };
if (buttonTh.length > 2 && buttonEn.length > 2) {
  buttonTh[2] = layer1;
  buttonEn[2] = layer1;
}

var dropdown = longdo.MapTheme.ui.layerSelectorDropdown;
var layer2 = { label: 'Open Cycle', value: longdo.Layers.OPENCYCLE };
dropdown.unshift(layer2);