
  var clickNames = [];
  for(var i=0;i<n;i++) {
    var chname = ui_utils.generateString(2,8);
    var label = div.append('label')
    label.append('input').attr('type', 'radio').attr('id', 'ch'+i).attr('name', 'radio');
    label[0][0].innerHTML += chname;
    div.append('br');
    clickNames.push(chname);
  }
  var ix = core.randi(0, n);
  var qstr = clickNames[ix];
  return {query: qstr, index: ix};
}

// enter-text
var randomizeInputs = function(){
  // move the text field around
  var s = '';
  s += '