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                <div id='mainElem' width="100%" height="100%">
  <button id="createCombo" onclick="showCombo()">Create ComboBox</button>
  <button id="removeCombo" onclick="destroyCombo()">Remove ComboBox</button>


                label {
  display: block;



                var _extensions = [
  { title: "All types (*.first, *.second, *.third, *.fourth, *.fifth, *.sixth)", extension: "" },
  { title: "First", extension: "*.first" },
  { title: "Second", extension: "*.second" },
  { title: "Third", extension: "*.third" },
  { title: "Fourth", extension: "*.fourth" },
  { title: "Fifth", extension: "*.fifth" },
  { title: "Sixth", extension: "*.sixth" }

var selectedExtension = _extensions[4].extension;

var _soloElement = null;
var _soloCombo = null;

var showCombo = function() {
  _soloElement = $('<div />')
    .attr('id', 'soloComboDiv');
  _soloElement.append($('<label />')
                      .attr('for', 'soloComboSelect')
                      .addClass('control-label col-sm-2')
                      .html('A jqueryui ComboBox:'));
  _soloCombo = $('<select />').addClass('soloComboSelect');    
  for (var i = 0; i < _extensions.length; i++) {
    var opt = $('<option />')
    .attr('value', _extensions[i].extension);
    if (selectedExtension == _extensions[i].extension) {
      $(opt).prop('selected', true);
  _soloCombo.selectmenu({style : 'dropdown'});

var destroyCombo = function() {
  if (_soloCombo != null) {
    // If i remove the options i added in 'showCombo'
    // and call selectmen('refresh') to re-render an empty 
    // list I avoid detached HTMLOptionElements that correspond to 
    // each option added
    if (_soloElement != null) {
      // If we try to remove this before the selectmenu 'destroy'
      // call we get an error from selectmenu code, presumably as it
      // relies on the element being present, as far a i can tell           
      // this is the ealriest opportunity after destroy to explicitly
      // remove the select node
    _soloCombo = null;    
  if (_soloElement != null) {
    // The select node will already be gone from the DOM by now
    // (selectmenu('destroy') call does this)
    _soloElement = null;