function showStopovers(idPrefix, stopovers, refId, refContainerId) {
  var stopoverDataId = idPrefix + "StopoverData"; 
  xSetTextval(stopoverDataId, stopovers);

  var stopoverId = idPrefix + "StopoverDiv";
  var xPos = xOffsetX(refId, refContainerId) + 50;
  var yPos = xOffsetY(refId, refContainerId) - 10;
  xMoveTo(stopoverId, xPos, yPos);
  xShow(stopoverId);
}

function hideStopovers(idPrefix) {
  var stopoverId = idPrefix + "StopoverDiv"; 
  xHide(stopoverId);
}