function cshow(id){
  chide();
  document.getElementById(id).style.display = "block"
}

function selectcourse(thisform) {
    selecteditem = thisform.course.selectedIndex ;
    cshow(thisform.course.options[selecteditem].value)
}

function chide() {
  document.getElementById("JAAType").style.display = "none"
  document.getElementById("JAAInst").style.display = "none"
  document.getElementById("JAATRI").style.display = "none"
  document.getElementById("JAAIRI").style.display = "none"
  document.getElementById("AS332").style.display = "none"
  document.getElementById("SPMEIR").style.display = "none"
  document.getElementById("AS355TR").style.display = "none"
  document.getElementById("QSPIR").style.display = "none"
  document.getElementById("FTJIC").style.display = "none"
  document.getElementById("FWTRIC").style.display = "none"
  document.getElementById("IRIC").style.display = "none"
}