function js_controller_destinationTiles(sender, evt) {
  var objBtn = document.getElementById(sender);
  switch (sender.toLowerCase()) {
    case "destal":
      if (evt.type == "mouseover") {
        swapImage(document.getElementById('destAlOn'), document.getElementById('destAl'));
      }
      if (evt.type == "mouseout") {
        swapImage(document.getElementById('destAl'), document.getElementById('destAlOn'));
      }
      break;
    case "destco":
      if (evt.type == "mouseover") {
        swapImage(document.getElementById('destCoOn'), document.getElementById('destCo'));
      }
      if (evt.type == "mouseout") {
        swapImage(document.getElementById('destCo'), document.getElementById('destCoOn'));
      }
      break;
    case "destke":
      if (evt.type == "mouseover") {
        swapImage(document.getElementById('destKeOn'), document.getElementById('destKe'));
      }
      if (evt.type == "mouseout") {
        swapImage(document.getElementById('destKe'), document.getElementById('destKeOn'));
      }
      break;
    case "destcy":
      if (evt.type == "mouseover") {
        swapImage(document.getElementById('destCyOn'), document.getElementById('destCy'));
      }
      if (evt.type == "mouseout") {
        swapImage(document.getElementById('destCy'), document.getElementById('destCyOn'));
      }
      break;
    case "destsp":
      if (evt.type == "mouseover") {
        swapImage(document.getElementById('destSpOn'), document.getElementById('destSp'));
      }
      if (evt.type == "mouseout") {
        swapImage(document.getElementById('destSp'), document.getElementById('destSpOn'));
      }
      break;
    case "destbl":
      if (evt.type == "mouseover") {
        swapImage(document.getElementById('destBlOn'), document.getElementById('destBl'));
      }
      if (evt.type == "mouseout") {
        swapImage(document.getElementById('destBl'), document.getElementById('destBlOn'));
      }
      break;
    case "destme":
      if (evt.type == "mouseover") {
        swapImage(document.getElementById('destMeOn'), document.getElementById('destMe'));
      }
      if (evt.type == "mouseout") {
        swapImage(document.getElementById('destMe'), document.getElementById('destMeOn'));
      }
      break;
    case "destma":
      if (evt.type == "mouseover") {
        swapImage(document.getElementById('destMaOn'), document.getElementById('destMa'));
      }
      if (evt.type == "mouseout") {
        swapImage(document.getElementById('destMa'), document.getElementById('destMaOn'));
      }
      break;
    case "destla":
      if (evt.type == "mouseover") {
        swapImage(document.getElementById('destLaOn'), document.getElementById('destLa'));
      }
      if (evt.type == "mouseout") {
        swapImage(document.getElementById('destLa'), document.getElementById('destLaOn'));
      }
      break;
  }
}