function showDet(DetId) {
  if (document.getElementById(DetId)) {
    document.getElementById(DetId).style.visibility = "visible";
  }
}

function hideDet(DetId) {
  if (document.getElementById(DetId)) {
    document.getElementById(DetId).style.visibility = "hidden";
  }
}

function setActive(DivId) {
  if (document.getElementById(DivId)) {
    document.getElementById(DivId).className = "subtext";
  }
}

function setPassive(DivId) {
  if (document.getElementById(DivId)) {
    document.getElementById(DivId).className = "date";
  }
}