function loadContentBack() {
  var begDiv=0;
  var endDiv=2;
  // hide all	
  for (x = begDiv; x <= endDiv; x++) {
    document.getElementById("content"+x).style.visibility = "hidden";
  }

  i=0;
  while (i < 3) {
    if (document.frm.wdywtd[i].checked) {
      obj = eval("document.getElementById('content"+i+"')");
      if (obj) {obj.style.visibility = 'visible';}
    }
    i++;
  }
}