Reset bootstrap multi-select dropdownlist using jquery

///////////////////////////////// HTML

<select size="4" multiple="multiple" id=" ddl_Stations" class="multiselect">

                     <option value="Alagawadi">Alagawadi</option>

                     <option value="Attigundi">Attigundi</option>

                     <option value="Balehonnur.M">Balehonnur</option>

                     <option value="Bannur">Bannur</option>

                     <option value="Bennur">Bannur</option>

                     <option value="Chandapur">Chandapur</option>

                     <option value="Chapoli (M)">Chapoli</option>

                     <option value="Chikkalgud">Chikkalgud</option>

                     <option value="Chincholi.M">Chincholi</option>

              </select>

//////////////////////////////// JS

<script>

function Fill_DropdownLists(fnName) {

                        $.ajax({

                            type: 'POST',

                            dataType: 'json',

                            contentType: 'application/json; charset=utf-8',

                            url: Page.aspx/' + fnName,

                            data: ''

                            dataType: "json",

                            success: function (data) {

                                debugger;

                                var $ddls = $('[id$=' + ddlFillID + ']');

                                $ddls.empty();

                                $.each(data.d, function () {

                                    $ddls.append($("<option></option>")

                                         .val(this['id']).html(this['Name']));

                                });

                           $ddls.multiselect('destroy');////destroy ul li from select option

                                Ddl_Multiselect(ddlFillID);///bind again multiselect

                            },

                            error: function (result) {

                                alert("Error");

                            }

                        });

                    }

function Ddl_Multiselect(ddlFillID) {

                                            $('[id$='+ddlFillID+']').multiselect({

                                                enableFiltering: true,

                                                maxHeight: 400,

                                                enableCaseInsensitiveFiltering: true,

                                                nonSelectedText: 'Select Stations',

                                                numberDisplayed: 2,

                                                selectAll: false,

                                                onChange: function (option, checked) {

                                                    // Get selected options.

                                                    var selectedOptions = jQuery('.multiselect option:selected');

                                                    if (selectedOptions.length >= 5) {

                                                        // Disable all other checkboxes.

                                                        var nonSelectedOptions = jQuery('.multiselect option').filter(function () {

                                                            return !jQuery(this).is(':selected');

                                                        });

                                                        nonSelectedOptions.each(function () {

                                                            var input = jQuery('input[value="' + jQuery(this).val() + '"]');

                                                            input.prop('disabled', true);

                                                            input.parent('li').addClass('disabled');

                                                        });

                                                    }

                                                    else {

                                                        // Enable all checkboxes.

                                                        jQuery('.multiselect option').each(function () {

                                                            var input = jQuery('input[value="' + jQuery(this).val() + '"]');

                                                            input.prop('disabled', false);

                                                            input.parent('li').addClass('disabled');

                                                        });

                                                    }

                                                }

                                            });

                                        }

                </script>

Reference -  http://davidstutz.de/bootstrap-multiselect/