function TblPlus() {
  var tbl = document.getElementById('Atext');
  tbl.style.display = 'block';
  var bttn = document.getElementById('Bbutton');
  bttn.style.display = 'none';
}
function TblMinus() {
  var tbl = document.getElementById('Atext');
  tbl.style.display = 'none';
  var bttn = document.getElementById('Bbutton');
  bttn.style.display = 'block';
}

function TblPlus2() {
  var tbl = document.getElementById('Atext2');
  tbl.style.display = 'block';
  var bttn = document.getElementById('Bbutton2');
  bttn.style.display = 'none';
}
function TblMinus2() {
  var tbl = document.getElementById('Atext2');
  tbl.style.display = 'none';
  var bttn = document.getElementById('Bbutton2');
  bttn.style.display = 'block';
}