Ajax search Before Post (Freemarker)

At LiNC this year, it was asked how to enhance this version to support an idle time lookup instead of an onBlur lookup.  We have done this in our Tech Zone implementation.  Here are the mods to the version I posted last.  This version will initiate a search after 750 ms of idle time (as well as on blur).

<#assign result_list_size = 3 />
<#assign subject_input_class = "lia-form-subject-input" />
<#assign results_label = text.format("custom.component.ajax_search_before_post.results_label") />

<@liaAddScript> 
    ;(function($) {
        if (typeof LITHIUM.CUSTOMER == "undefined") { 
            LITHIUM.CUSTOMER = {}; 
        }
        if (typeof LITHIUM.CUSTOMER.EXAMPLE == "undefined") { 
            LITHIUM.CUSTOMER.EXAMPLE = {}; 
        }
        LITHIUM.CUSTOMER.EXAMPLE.AjaxSearch = function() {
            $(document).ready(function() {
                $(".${subject_input_class}").each(function(index, subject_input) {
                    var subject_input = $(subject_input);
                    var idleTime = 0;
                    var searchable = false;
                    var last_search = "";
                    subject_input.parent().append("<div class='ajax-message-subject-search-results'></div>");

                    var idleInterval = setInterval(function() {
                        timerIncrement(subject_input);
                    }, 250);
                      
                    $(subject_input).keyup(function(e) {
                        idleTime = 0;
                        searchable = true;
                    });

                    function incrementTimer() {
                        idleTime++;
                        if (idleTime > 2 && searchable && last_search != subject_input.val()) {
                            $(subject_input).trigger("myIdleEvent", [ subject_input ]);
                        }
                    }

                    subject_input.bind('blur myIdleEvent', function(e, field, value) {
                        var subj_input = $(subject_input);
                        var subjectValue = subj_input.val();
                        searchable = false;
                        
                        if (subjectValue.length > 0) {
                            $.ajax({
                                type: "GET",
                                url: "/${community.id}/restapi/vc/search/messages",
                                data: ({
                                    "q":subjectValue,
                                    "page_size":"${result_list_size}",
                                    "restapi.response_style":"view",
                                    "xslt":"json.xsl"
                                }),
                                success: function(result) {
                                    $(subj_input).parent().find(".ajax-message-subject-search-results").each(function(index, results_div) {
                                        if (result.response.messages == null || result.response.messages.message.length < 1) {
                                            $(results_div).empty();
                                        } else {
                                            var msgMarkup = "<div><span>${results_label}</span></div>";
                                            msgMarkup += "<table class='lia-list-wide'>";
                                            if (typeof result.response.messages.message.length === 'undefined') {
                                                msgMarkup += "<tr><td><a href='" + result.response.messages.message.view_href + "'>" + result.response.messages.message.subject.$ + "</a></td></tr>";
                                            } else {
                                                $.each(result.response.messages.message, function(index, msg) {
                                                    msgMarkup += "<tr><td><a href='" + msg.view_href + "'>" + msg.subject.$ + "</a></td></tr>";
                                                });
                                            }
                                            msgMarkup += "</table>";
                                            $(results_div).empty().append(msgMarkup);
                                        }
                                    });
                                }
                                
                            });
                        }
                    });
                });
            });
        };
    })(LITHIUM.jQuery);
    
    LITHIUM.CUSTOMER.EXAMPLE.AjaxSearch();
</@liaAddScript>