function notice_area() {
  document.getElementById("notice_area").style.display='';
  document.getElementById("free_area").style.display='none';
  document.getElementById("plz_area").style.display='none';
//  document.getElementById("gi_area").style.display='none';
}

function free_area() {
  document.getElementById("notice_area").style.display='none';
  document.getElementById("free_area").style.display='';
  document.getElementById("plz_area").style.display='none';
//  document.getElementById("gi_area").style.display='none';
}

function plz_area() {
  document.getElementById("notice_area").style.display='none';
  document.getElementById("free_area").style.display='none';
  document.getElementById("plz_area").style.display='';
//  document.getElementById("gi_area").style.display='none';
}

function gi_area() {
  document.getElementById("notice_area").style.display='none';
  document.getElementById("free_area").style.display='none';
  document.getElementById("plz_area").style.display='none';
//  document.getElementById("gi_area").style.display='';
}