$.fn.serializeObject = function() {
  var o = {};
  var a = this.serializeArray();
  $.each(a, function() {
    if (o[this.name] !== undefined) {
      if (!o[this.name].push) {
        o[this.name] = [o[this.name]];
      }
      o[this.name].push(this.value || '');
    } else {
      o[this.name] = this.value || '';
    }
  });
  return o;
};

var etk_search_token = '';
var etk_search_total_results = 0;
var etk_ajax_loading = false;
var etk_specs_loading = false;
var etk_specs_loaded_token = '';
var etk_specs_locked = false;
var etk_specs_base_token = '';
var etk_specs_retry_count = 0;
var etk_initial_filter_specs = null;
var etk_merged_filter_specs = null;
var etk_filter_seen_products = {};
var etk_filter_seen_fallback_nodes = 0;
var f_last_page_url_update = 0;
var etk_results_cache_prefix = 'etk_search_results_cache_v17:';
var etk_results_cache_ttl = 30 * 60 * 1000;
var etk_results_scroll_restore = null;
var etk_results_cache_restored = false;
var etk_prefetch_loading = false;
var etk_prefetch_data = null;
var etk_prefetch_key = '';
var etk_prefetch_req = null;
var etk_prefetch_consume_requested = false;
var etk_prefetch_last_attempt = 0;
var etk_infinite_preload_distance = 3200;
var etk_infinite_load_distance = 800;
var etk_filter_option_limit = 5;
var etk_filter_default_open_category_limit = 5;
var etk_filter_option_expanded = {};
var etk_filter_cat_open_state = {};
var etk_filter_cat_user_state = {};
var etk_filter_top_open_state = {};
var etk_filter_top_user_state = {};

function f_parse_etk_search_meta(data) {
  var m;
  if (!data) return;
  m = data.match(/<!--\s*ETK_SEARCH_TOKEN\s+([a-zA-Z0-9_\-]+)\s*-->/);
  if (m && m[1]) {
    etk_search_token = m[1];
    window.etk_search_token = etk_search_token;
  }
  m = data.match(/<!--\s*ETK_SEARCH_TOTAL\s+(\d+)\s*-->/);
  if (m && m[1]) {
    etk_search_total_results = parseInt(m[1], 10) || 0;
    window.etk_search_total_results = etk_search_total_results;
  }
}

function f_build_ajax_request_url(load_page, page_start_override) {
  var url = get_url;
  var page_start = pages_loaded;
  if (typeof page_start_override != 'undefined') {
    page_start = page_start_override;
  }
  if (url.indexOf('?') == -1) {
    url += '?';
  } else {
    url += '&';
  }
  url += 'filters=' + encodeURIComponent($('#id_field_filters').val() || '') + '&page_start=' + encodeURIComponent(page_start) + '&page_count=' + encodeURIComponent(load_page);
  if (etk_search_token != '') {
    url += '&search_token=' + encodeURIComponent(etk_search_token);
  }
  return url;
}

function f_get_checked_filters_string() {
  var filters_string = '';
  var filters_cats = '';
  var filters_subs = '';
  var check_name;
  var matches;

  $('#id_products_filters_form input:checked').each(function() {
    check_name = $(this).attr('name') || '';
    if (check_name.indexOf('products_top_categories_id') != -1) {
      matches = check_name.match(/products_top_categories_id\[(\d+)\]/);
      if (matches && matches[1]) {
        filters_cats += (filters_cats == '' ? '' : ',') + matches[1];
      }
    }
    if (check_name.indexOf('products_filters_id') != -1) {
      matches = check_name.match(/products_filters_id\[(\d+)\]\[(\d+)\]/);
      if (matches && matches[2]) {
        filters_subs += (filters_subs == '' ? '' : ',') + matches[2];
      }
    }
  });

  if ($('#id_products_filters_form input[name^=products_top_categories_id]').length == $('#id_products_filters_form input:checked[name^=products_top_categories_id]').length) {
    if ((filter_type == 0) && (filters_subs.length == 0)) {
      filters_cats = '';
    }
    if ((filter_type == 1) && (filters_subs == '')) {
      filters_cats = '';
    }
  }

  if ((filters_cats != '') || (filters_subs != '')) {
    filters_string = filters_cats + '-' + filters_subs;
  }
  return filters_string;
}

function f_set_page_url(action) {
  var setpage = 1;
  var scroll_top;
  var base_url;
  if (is_spider) return;
  if (!window.history || !window.history.replaceState) return;
  if (action == 'scroll') {
    var now = (new Date()).getTime();
    if ((now - f_last_page_url_update) < 250) return;
    f_last_page_url_update = now;
  }
  scroll_top = $(window).scrollTop();
  $('.ajax-page-header').each(function() {
    if ($(this).offset().top - scroll_top > 0) return false;
    setpage = $(this).attr('id').replace('id_page_', '');
  });
  base_url = browser_url;
  if ($('#id_field_filters').val() != '') {
    base_url += (base_url.indexOf('?') == -1 ? '?' : '&') + 'filters=' + encodeURIComponent($('#id_field_filters').val());
  }
  window.history.replaceState({scrollpos: scroll_top, ajax_page: setpage, pages_loaded: pages_loaded}, $(document).find('title').text(), base_url);
}

function f_collect_shipping_filters() {
  var obj = {};
  $('input[id^="id_shipping_filters_"]').each(function(){
    obj = $.extend({}, obj, $(this).serializeObject());
  });
  return obj;
}

function f_show_loading_more() {
  if (!$('#etk_loading_more').length) {
    $('#id_ajax_filters').after('<div id="etk_loading_more" style="display:none;clear:both;width:100%;text-align:center;padding:8px 0 12px 0;font-family:Arial, Helvetica, sans-serif;"><div style="display:inline-flex;align-items:center;justify-content:flex-start;gap:10px;max-width:330px;width:auto;box-sizing:border-box;background:#ffffff;border:1px solid #d7e4d3;border-radius:8px;box-shadow:0 4px 12px rgba(20,70,35,0.12);padding:7px 13px;color:#1f4f25;text-align:left;margin:0 auto;"><img src="images/giphy.gif" alt="Loading" height="62" width="62" style="display:block;flex:0 0 auto;vertical-align:middle;"><div style="display:block;text-align:left;min-width:0;"><div style="font-size:14px;line-height:18px;font-weight:bold;color:#0f3d23;text-align:left;white-space:nowrap;">Loading More Results</div><div style="font-size:11px;line-height:15px;font-weight:normal;color:#56705b;margin-top:1px;text-align:left;">Please wait...</div></div></div></div>');
  }
  $('#etk_loading_more').show();
}

function f_hide_loading_more() {
  $('#etk_loading_more').hide();
}


function f_build_results_request_data() {
  return $.extend({}, $('#id_filters_products_form').serializeObject(), $('#id_products_filters_form').serializeObject(), f_collect_shipping_filters(), possible_products);
}

function f_results_request_signature() {
  var sig = '';
  try { sig += $('#id_filters_products_form').serialize(); } catch (e1) {}
  sig += '|';
  try { sig += $('#id_products_filters_form').serialize(); } catch (e2) {}
  sig += '|';
  try { sig += $('input[id^="id_shipping_filters_"]').serialize(); } catch (e3) {}
  sig += '|f=' + ($('#id_field_filters').val() || '');
  sig += '|m=' + ($('#id_max_search_weight').val() || '0');
  sig += '|t=' + (etk_search_token || window.etk_search_token || '');
  return sig;
}

function f_results_prefetch_key(page_start, load_page) {
  return String(page_start) + '|' + String(load_page) + '|' + f_results_request_signature();
}

function f_clear_results_prefetch(abort_request) {
  if (abort_request) {
    try { if (etk_prefetch_req) etk_prefetch_req.abort(); } catch (e) {}
  }
  etk_prefetch_loading = false;
  etk_prefetch_data = null;
  etk_prefetch_key = '';
  etk_prefetch_req = null;
  etk_prefetch_consume_requested = false;
}

function f_results_show_more_distance() {
  var show_more = $('#id_ajax_filters_show_more');
  if (!show_more.length || show_more.css('display') == 'none') return 999999;
  return show_more.offset().top - $(window).scrollTop() - $(window).height();
}

function f_handle_loaded_results_data(data, load_page) {
  f_parse_etk_search_meta(data);
  if (data.indexOf('<!-- max search weight') > -1) {
    var max_search_weight = data.match(/<!-- max search weight (.*) -->/);
    if (max_search_weight && max_search_weight[1]) $('#id_max_search_weight').val(max_search_weight[1]);
  }

  if (((data.indexOf('<!-- next chunk -->') > -1) || (data.indexOf('<!-- end of list -->') > -1)) && (pages_loaded > 0)) {
    pages_loaded += load_page;
    $('#id_ajax_filters').append(data);
  } else {
    pages_loaded += load_page;
    $('#id_ajax_filters').stop(true, true).html(data).show();
  }

  if ((data.indexOf('<!-- last chunk -->') == -1) && (data.indexOf('<!-- end of list -->') == -1) && (data.indexOf('<!-- no result -->') == -1)) {
    $('#id_ajax_filters_show_more').css('opacity','').show();
  } else {
    $('#id_ajax_filters_show_more').hide();
  }

  f_load_filter_specs(false);
  f_set_page_url('load');
  window.setTimeout(function(){ try { f_save_results_cache('load'); } catch (e3) {} }, 250);
  window.setTimeout(function(){
    try { f_init_safe_filter_float(); } catch (e) {}
    try { f_maybe_start_results_prefetch(); } catch (e2) {}
  }, 120);
}

function f_use_results_prefetch() {
  var key = f_results_prefetch_key(pages_loaded, 1);
  var data;
  if (!etk_prefetch_data || etk_prefetch_key != key) return false;
  data = etk_prefetch_data;
  f_clear_results_prefetch(false);
  f_hide_loading_more();
  f_handle_loaded_results_data(data, 1);
  return true;
}

function f_start_results_prefetch() {
  var key;
  var data_obj;
  var now;

  if (is_spider) return;
  if (!$('#id_ajax_filters_show_more').length) return;
  if ($('#id_ajax_filters_show_more').css('display') == 'none') return;
  if (pages_loaded < 1) return;
  if (etk_ajax_loading) return;

  key = f_results_prefetch_key(pages_loaded, 1);
  if (etk_prefetch_data && etk_prefetch_key == key) return;
  if (etk_prefetch_loading && etk_prefetch_key == key) return;

  now = (new Date()).getTime();
  if ((now - etk_prefetch_last_attempt) < 500) return;
  etk_prefetch_last_attempt = now;

  if (etk_prefetch_loading) {
    f_clear_results_prefetch(true);
  }

  data_obj = f_build_results_request_data();
  etk_prefetch_loading = true;
  etk_prefetch_data = null;
  etk_prefetch_key = key;
  etk_prefetch_req = $.ajax({
    type: 'POST',
    url: f_build_ajax_request_url(1, pages_loaded),
    data: data_obj
  }).done(function(data) {
    if (etk_prefetch_key == key) {
      etk_prefetch_data = data;
    }
  }).fail(function() {
    if (etk_prefetch_key == key) {
      etk_prefetch_data = null;
    }
  }).always(function() {
    var should_consume = etk_prefetch_consume_requested;
    etk_prefetch_loading = false;
    etk_prefetch_req = null;
    if (should_consume) {
      etk_prefetch_consume_requested = false;
      if (!f_use_results_prefetch()) {
        f_clear_results_prefetch(false);
        f_filter_form_submit(false);
      }
    }
  });
}

function f_maybe_start_results_prefetch() {
  var distance;
  if (etk_ajax_loading) return;
  distance = f_results_show_more_distance();
  if (distance < etk_infinite_preload_distance) {
    f_start_results_prefetch();
  }
}


function f_get_filter_scroll_box() {
  var box = $('#epi_search_deferred_filters').closest('table.infoBox');
  if (box.length) return box;
  box = $('#c-modal__filter .c-sidebox').first();
  return box;
}

function f_supports_results_cache() {
  try {
    if (!window.sessionStorage || !window.JSON) return false;
    sessionStorage.setItem('etk_cache_test', '1');
    sessionStorage.removeItem('etk_cache_test');
    return true;
  } catch (e) {
    return false;
  }
}

function f_results_cache_base_url() {
  var url = '';
  if (window.location && window.location.href) {
    url = window.location.href;
  } else if (typeof browser_url != 'undefined') {
    url = browser_url;
  }
  if (url.indexOf('#') > -1) {
    url = url.split('#')[0];
  }
  return url;
}

function f_results_cache_key() {
  return etk_results_cache_prefix + f_results_cache_base_url();
}

function f_results_prune_cache() {
  var keys = [];
  var i;
  var k;
  var raw;
  var obj;
  if (!f_supports_results_cache()) return;
  try {
    for (i = 0; i < sessionStorage.length; i++) {
      k = sessionStorage.key(i);
      if (k && k.indexOf(etk_results_cache_prefix) == 0) {
        raw = sessionStorage.getItem(k);
        obj = null;
        try { obj = JSON.parse(raw); } catch (e1) { obj = null; }
        if (!obj || !obj.saved_at || (((new Date()).getTime() - parseInt(obj.saved_at, 10)) > etk_results_cache_ttl)) {
          sessionStorage.removeItem(k);
          i--;
        } else {
          keys.push({key:k, saved_at:parseInt(obj.saved_at, 10)});
        }
      }
    }
    keys.sort(function(a,b){ return a.saved_at - b.saved_at; });
    while (keys.length > 4) {
      sessionStorage.removeItem(keys[0].key);
      keys.shift();
    }
  } catch (e2) {}
}

function f_save_results_cache(reason) {
  var list;
  var html;
  var cache;
  var key;
  var scroller;
  if (!f_supports_results_cache()) return;
  if (!$('#id_ajax_filters').length) return;
  if (typeof pages_loaded == 'undefined') return;
  if (pages_loaded < 1) return;

  list = $('#id_ajax_filters');
  html = list.html() || '';
  if (html == '' || html.indexOf('Please wait') > -1 || html.indexOf('Searching') > -1) return;

  scroller = f_get_filter_scroll_box();
  cache = {
    saved_at: (new Date()).getTime(),
    reason: reason || '',
    html: html,
    pages_loaded: pages_loaded,
    search_token: etk_search_token || window.etk_search_token || '',
    total_results: etk_search_total_results || window.etk_search_total_results || 0,
    field_filters: $('#id_field_filters').val() || '',
    max_search_weight: $('#id_max_search_weight').val() || '0',
    show_more_visible: ($('#id_ajax_filters_show_more').length && $('#id_ajax_filters_show_more').css('display') != 'none') ? 1 : 0,
    scroll_top: $(window).scrollTop(),
    filter_scroll_top: scroller.length ? scroller.scrollTop() : 0,
    title: $(document).find('title').text()
  };

  key = f_results_cache_key();
  try {
    sessionStorage.setItem(key, JSON.stringify(cache));
    f_results_prune_cache();
  } catch (e) {
    f_results_prune_cache();
    try { sessionStorage.setItem(key, JSON.stringify(cache)); } catch (e2) {}
  }
}

function f_restore_results_cache() {
  var key;
  var raw;
  var cache;
  var now;
  if (!f_supports_results_cache()) return false;
  if (!$('#id_ajax_filters').length) return false;

  key = f_results_cache_key();
  raw = null;
  try { raw = sessionStorage.getItem(key); } catch (e) { raw = null; }
  if (!raw) return false;

  try { cache = JSON.parse(raw); } catch (e2) { cache = null; }
  if (!cache || !cache.html || !cache.saved_at) return false;

  now = (new Date()).getTime();
  if ((now - parseInt(cache.saved_at, 10)) > etk_results_cache_ttl) {
    try { sessionStorage.removeItem(key); } catch (e3) {}
    return false;
  }

  $('#id_ajax_filters').stop(true, true).html(cache.html).show();
  if ($('#id_field_filters').length) $('#id_field_filters').val(cache.field_filters || '');
  if ($('#id_max_search_weight').length) $('#id_max_search_weight').val(cache.max_search_weight || '0');
  if (cache.search_token) {
    etk_search_token = cache.search_token;
    window.etk_search_token = cache.search_token;
  }
  if (cache.total_results) {
    etk_search_total_results = parseInt(cache.total_results, 10) || 0;
    window.etk_search_total_results = etk_search_total_results;
  }
  pages_loaded = parseInt(cache.pages_loaded, 10) || 1;
  if (cache.show_more_visible) {
    $('#id_ajax_filters_show_more').css('opacity','').show();
  } else {
    $('#id_ajax_filters_show_more').hide();
  }
  f_parse_etk_search_meta(cache.html);
  f_load_filter_specs(false);
  f_style_filter_controls();
  f_init_filter_groups();
  etk_results_cache_restored = true;
  etk_results_scroll_restore = {
    scroll_top: parseInt(cache.scroll_top, 10) || 0,
    filter_scroll_top: parseInt(cache.filter_scroll_top, 10) || 0
  };
  setTimeout(function(){
    var scroller;
    try { f_init_safe_filter_float(); } catch (e4) {}
    if (etk_results_scroll_restore) {
      $(window).scrollTop(etk_results_scroll_restore.scroll_top);
      scroller = f_get_filter_scroll_box();
      if (scroller.length) scroller.scrollTop(etk_results_scroll_restore.filter_scroll_top);
      etk_results_scroll_restore = null;
      f_set_page_url('load');
    }
  }, 120);
  return true;
}


function f_etk_html_escape(value) {
  if (value === null || value === undefined) return '';
  return String(value).replace(/&/g, '&amp;').replace(/</g, '&lt;').replace(/>/g, '&gt;').replace(/"/g, '&quot;').replace(/'/g, '&#039;');
}


function f_empty_filter_specs() {
  return {tops:{}, cats:{}, filters:{}, products:{}};
}

function f_filter_specs_has_data(meta) {
  var top_id;
  if (!meta || !meta.tops) return false;
  for (top_id in meta.tops) {
    if (meta.tops.hasOwnProperty(top_id)) return true;
  }
  return false;
}

function f_find_filter_location(meta, filter_id) {
  var top_id;
  var cat_id;
  if (!meta || !meta.filters) return null;
  filter_id = String(filter_id);
  for (top_id in meta.filters) {
    if (meta.filters.hasOwnProperty(top_id)) {
      for (cat_id in meta.filters[top_id]) {
        if (meta.filters[top_id].hasOwnProperty(cat_id) && meta.filters[top_id][cat_id][filter_id]) {
          return {top_id: String(top_id), cat_id: String(cat_id)};
        }
      }
    }
  }
  return null;
}

function f_merge_filter_specs_object(meta) {
  var changed = false;
  var top_id;
  var cat_id;
  var filter_id;
  var pid;
  var i;
  var loc;
  var filter;
  var seen_products_in_meta = false;

  if (!meta || !meta.tops || !meta.cats || !meta.filters) return false;
  if (!etk_merged_filter_specs) {
    etk_merged_filter_specs = f_empty_filter_specs();
  }

  for (top_id in meta.tops) {
    if (meta.tops.hasOwnProperty(top_id)) {
      top_id = String(top_id);
      if (!etk_merged_filter_specs.tops[top_id]) {
        etk_merged_filter_specs.tops[top_id] = {
          id: meta.tops[top_id].id || top_id,
          name: meta.tops[top_id].name || 'Product Type',
          spec_count: 0
        };
        changed = true;
      }
    }
  }

  for (top_id in meta.cats) {
    if (meta.cats.hasOwnProperty(top_id)) {
      top_id = String(top_id);
      if (!etk_merged_filter_specs.cats[top_id]) etk_merged_filter_specs.cats[top_id] = {};
      for (cat_id in meta.cats[top_id]) {
        if (meta.cats[top_id].hasOwnProperty(cat_id)) {
          cat_id = String(cat_id);
          if (!etk_merged_filter_specs.cats[top_id][cat_id]) {
            etk_merged_filter_specs.cats[top_id][cat_id] = {
              id: meta.cats[top_id][cat_id].id || cat_id,
              name: meta.cats[top_id][cat_id].name || 'Specification'
            };
            changed = true;
          }
        }
      }
    }
  }

  for (top_id in meta.filters) {
    if (meta.filters.hasOwnProperty(top_id)) {
      top_id = String(top_id);
      if (!etk_merged_filter_specs.filters[top_id]) etk_merged_filter_specs.filters[top_id] = {};
      if (!etk_merged_filter_specs.tops[top_id] && meta.tops[top_id]) {
        etk_merged_filter_specs.tops[top_id] = {id: top_id, name: meta.tops[top_id].name || 'Product Type', spec_count: 0};
      }
      for (cat_id in meta.filters[top_id]) {
        if (meta.filters[top_id].hasOwnProperty(cat_id)) {
          cat_id = String(cat_id);
          if (!etk_merged_filter_specs.filters[top_id][cat_id]) etk_merged_filter_specs.filters[top_id][cat_id] = {};
          for (filter_id in meta.filters[top_id][cat_id]) {
            if (meta.filters[top_id][cat_id].hasOwnProperty(filter_id)) {
              filter_id = String(filter_id);
              filter = meta.filters[top_id][cat_id][filter_id] || {};
              if (!etk_merged_filter_specs.filters[top_id][cat_id][filter_id]) {
                etk_merged_filter_specs.filters[top_id][cat_id][filter_id] = {
                  id: filter.id || filter_id,
                  name: filter.name || '',
                  count: 0
                };
                if (etk_merged_filter_specs.tops[top_id]) {
                  etk_merged_filter_specs.tops[top_id].spec_count = (parseInt(etk_merged_filter_specs.tops[top_id].spec_count, 10) || 0) + 1;
                }
                changed = true;
              }
            }
          }
        }
      }
    }
  }

  if (meta.products) {
    for (pid in meta.products) {
      if (meta.products.hasOwnProperty(pid)) {
        seen_products_in_meta = true;
        pid = String(pid);
        if (etk_filter_seen_products[pid]) continue;
        etk_filter_seen_products[pid] = 1;
        if (!etk_merged_filter_specs.products) etk_merged_filter_specs.products = {};
        etk_merged_filter_specs.products[pid] = meta.products[pid];
        for (i = 0; i < meta.products[pid].length; i++) {
          filter_id = String(meta.products[pid][i]);
          loc = f_find_filter_location(meta, filter_id);
          if (loc && etk_merged_filter_specs.filters[loc.top_id] && etk_merged_filter_specs.filters[loc.top_id][loc.cat_id] && etk_merged_filter_specs.filters[loc.top_id][loc.cat_id][filter_id]) {
            etk_merged_filter_specs.filters[loc.top_id][loc.cat_id][filter_id].count = (parseInt(etk_merged_filter_specs.filters[loc.top_id][loc.cat_id][filter_id].count, 10) || 0) + 1;
            changed = true;
          }
        }
      }
    }
  }

  if (!seen_products_in_meta) {
    // Fallback for older metadata blocks that only contain aggregate counts.
    for (top_id in meta.filters) {
      if (meta.filters.hasOwnProperty(top_id)) {
        top_id = String(top_id);
        for (cat_id in meta.filters[top_id]) {
          if (meta.filters[top_id].hasOwnProperty(cat_id)) {
            cat_id = String(cat_id);
            for (filter_id in meta.filters[top_id][cat_id]) {
              if (meta.filters[top_id][cat_id].hasOwnProperty(filter_id)) {
                filter_id = String(filter_id);
                if (etk_merged_filter_specs.filters[top_id] && etk_merged_filter_specs.filters[top_id][cat_id] && etk_merged_filter_specs.filters[top_id][cat_id][filter_id]) {
                  etk_merged_filter_specs.filters[top_id][cat_id][filter_id].count = (parseInt(etk_merged_filter_specs.filters[top_id][cat_id][filter_id].count, 10) || 0) + (parseInt(meta.filters[top_id][cat_id][filter_id].count, 10) || 0);
                  changed = true;
                }
              }
            }
          }
        }
      }
    }
  }

  return changed;
}

function f_merge_filter_specs_from_dom() {
  var changed = false;
  var nodes = $('.etk_filter_specs_data, #etk_filter_specs_data');
  nodes.each(function(){
    var node = $(this);
    var txt;
    var obj = null;
    if (node.data('etkProcessed')) return;
    node.data('etkProcessed', true);
    txt = $.trim(node.text() || '');
    if (txt == '') return;
    try {
      if ($.parseJSON) {
        obj = $.parseJSON(txt);
      } else if (window.JSON && window.JSON.parse) {
        obj = window.JSON.parse(txt);
      }
    } catch (e) {
      obj = null;
    }
    if (f_merge_filter_specs_object(obj)) {
      changed = true;
    }
  });
  if (changed && etk_merged_filter_specs) {
    etk_initial_filter_specs = etk_merged_filter_specs;
    window.etk_initial_filter_specs = etk_merged_filter_specs;
  }
  return changed;
}

function f_collect_filter_check_state() {
  var state = {};
  $('#id_products_filters_form input[name^="products_filters_id"],#id_products_filters_form input[name^="products_top_categories_id"],#id_products_filters_form input[name^="products_categories_id"]').each(function(){
    var id = $(this).attr('id') || '';
    if (id != '') state[id] = ($(this).prop('checked') ? 1 : 0);
  });
  return state;
}

function f_restore_filter_check_state(state) {
  var id;
  if (!state) return;
  for (id in state) {
    if (state.hasOwnProperty(id)) {
      $('#' + id).prop('checked', state[id] ? true : false).attr('checked', state[id] ? 'checked' : false);
    }
  }
}

function f_get_initial_filter_specs_from_dom() {
  var holder;
  var txt;
  var obj;

  f_merge_filter_specs_from_dom();
  if (etk_merged_filter_specs && f_filter_specs_has_data(etk_merged_filter_specs)) {
    return etk_merged_filter_specs;
  }
  if (etk_initial_filter_specs) return etk_initial_filter_specs;
  if (window.etk_initial_filter_specs) {
    etk_initial_filter_specs = window.etk_initial_filter_specs;
    f_merge_filter_specs_object(etk_initial_filter_specs);
    return etk_merged_filter_specs || etk_initial_filter_specs;
  }
  holder = $('#etk_filter_specs_data,.etk_filter_specs_data').first();
  if (!holder.length) return null;
  txt = $.trim(holder.text() || '');
  if (txt == '') return null;
  try {
    if ($.parseJSON) {
      obj = $.parseJSON(txt);
    } else if (window.JSON && window.JSON.parse) {
      obj = window.JSON.parse(txt);
    }
  } catch (e) {
    obj = null;
  }
  if (!obj || !obj.tops || !obj.cats || !obj.filters) return null;
  f_merge_filter_specs_object(obj);
  etk_initial_filter_specs = etk_merged_filter_specs || obj;
  window.etk_initial_filter_specs = etk_initial_filter_specs;
  return etk_initial_filter_specs;
}

function f_render_initial_filter_specs(meta) {
  var html = '';
  var top_ids = [];
  var top_id;
  var cat_ids;
  var cat_id;
  var filter_ids;
  var filter_id;
  var top;
  var cat;
  var filter;
  var i;
  var j;
  var k;

  if (!meta || !meta.tops || !meta.cats || !meta.filters) return false;

  for (top_id in meta.tops) {
    if (meta.tops.hasOwnProperty(top_id)) top_ids.push(top_id);
  }
  if (top_ids.length < 1) return false;

  top_ids.sort(function(a, b){
    var ta = meta.tops[a] || {};
    var tb = meta.tops[b] || {};
    var ca = parseInt(ta.spec_count, 10) || 0;
    var cb = parseInt(tb.spec_count, 10) || 0;
    if (cb != ca) return cb - ca;
    return (parseInt(a, 10) || 0) - (parseInt(b, 10) || 0);
  });

  html += '<div class="etk-filter-specs" data-etk-filter-source="initial-dom">';
  for (i = 0; i < top_ids.length; i++) {
    top_id = top_ids[i];
    top = meta.tops[top_id] || {};
    html += '<label class="epi-filter-top etk-filter-top-label" for="id_products_filters_top_categories_id_' + f_etk_html_escape(top_id) + '">';
    html += '<input type="checkbox" name="products_top_categories_id[' + f_etk_html_escape(top_id) + ']" value="1" checked="checked" id="id_products_filters_top_categories_id_' + f_etk_html_escape(top_id) + '">';
    html += f_etk_html_escape(top.name || 'Product Type');
    html += '</label>';
    html += '<div class="etk-filter-top-body" id="id_sub_products_filters_top_categories_id_' + f_etk_html_escape(top_id) + '" data-etk-spec-count="' + f_etk_html_escape(top.spec_count || 0) + '">';

    cat_ids = [];
    if (meta.cats[top_id]) {
      for (cat_id in meta.cats[top_id]) {
        if (meta.cats[top_id].hasOwnProperty(cat_id)) cat_ids.push(cat_id);
      }
    }
    cat_ids.sort(function(a, b){
      var ca = (meta.cats[top_id][a] || {}).name || '';
      var cb = (meta.cats[top_id][b] || {}).name || '';
      if (ca < cb) return -1;
      if (ca > cb) return 1;
      return 0;
    });

    for (j = 0; j < cat_ids.length; j++) {
      cat_id = cat_ids[j];
      cat = meta.cats[top_id][cat_id] || {};
      html += '<label class="epi-filter-cat lfad" for="id_products_filters_categories_id_' + f_etk_html_escape(cat_id) + '">&nbsp;' + f_etk_html_escape(cat.name || 'Specification');
      html += '<input type="checkbox" name="products_categories_id[' + f_etk_html_escape(cat_id) + ']" value="1" checked="checked" id="id_products_filters_categories_id_' + f_etk_html_escape(cat_id) + '">';
      html += '</label>';
      html += '<div id="id_sub_products_filters_categories_id_' + f_etk_html_escape(cat_id) + '" style="padding:5px 5px 10px 5px;">';

      filter_ids = [];
      if (meta.filters[top_id] && meta.filters[top_id][cat_id]) {
        for (filter_id in meta.filters[top_id][cat_id]) {
          if (meta.filters[top_id][cat_id].hasOwnProperty(filter_id)) filter_ids.push(filter_id);
        }
      }
      filter_ids.sort(function(a, b){
        var fa = meta.filters[top_id][cat_id][a] || {};
        var fb = meta.filters[top_id][cat_id][b] || {};
        var ca = parseInt(fa.count, 10) || 0;
        var cb = parseInt(fb.count, 10) || 0;
        if (cb != ca) return cb - ca;
        if ((fa.name || '') < (fb.name || '')) return -1;
        if ((fa.name || '') > (fb.name || '')) return 1;
        return 0;
      });
      for (k = 0; k < filter_ids.length; k++) {
        filter_id = filter_ids[k];
        filter = meta.filters[top_id][cat_id][filter_id] || {};
        html += '<div class="epi-filter-option" id="id_div_products_filters_' + f_etk_html_escape(filter_id) + '">';
        html += '<label for="id_products_filters_' + f_etk_html_escape(filter_id) + '">';
        html += '<input type="checkbox" name="products_filters_id[' + f_etk_html_escape(top_id) + '][' + f_etk_html_escape(filter_id) + ']" value="1" id="id_products_filters_' + f_etk_html_escape(filter_id) + '"> ' + f_etk_html_escape(filter.name || '');
        html += '</label><div class="c-filter__counter">(' + f_etk_html_escape(filter.count || 0) + ')</div>';
        html += '</div>';
      }
      html += '</div>';
    }
    html += '</div>';
  }
  html += '</div>';

  $('#epi_search_deferred_filters').html(html);
  return true;
}

function f_collect_visible_product_ids_for_specs() {
  var ids = [];
  var seen = {};
  var href;
  var m;
  $('#id_ajax_filters a[href]').each(function(){
    href = $(this).attr('href') || '';
    m = href.match(/[?&]products_id=(\d+)/);
    if (m && m[1]) {
      if (!seen[m[1]]) {
        seen[m[1]] = 1;
        ids.push(m[1]);
      }
    } else {
      m = href.match(/-p-(\d+)\.html/i);
      if (m && m[1]) {
        if (!seen[m[1]]) {
          seen[m[1]] = 1;
          ids.push(m[1]);
        }
      }
    }
  });
  return ids;
}

function f_load_filter_specs(force) {
  var token = etk_specs_base_token || etk_search_token || window.etk_search_token || '';
  var data_obj;
  var visible_ids;

  if (!$('#epi_search_deferred_filters').length) return;

  /*
    Search filter specs are intentionally loaded once from the first full search
    result set. Do not recalculate this sidebar after users choose filters, or
    they lose the ability to undo a spec/category choice that disappears from a
    narrower filtered result set.
  */
  if (etk_specs_locked) {
    var state_locked = f_collect_filter_check_state();
    if (f_merge_filter_specs_from_dom()) {
      f_render_initial_filter_specs(etk_merged_filter_specs || etk_initial_filter_specs);
      f_restore_filter_check_state(state_locked);
      $('#epi_search_deferred_filters').data('etkGroupsInitialized', false);
    }
    f_style_filter_controls();
    f_init_filter_groups();
    return;
  }

  if (etk_specs_loading) return;
  if (token != '' && !force && etk_specs_loaded_token == token) return;

  if (f_render_initial_filter_specs(f_get_initial_filter_specs_from_dom())) {
    etk_specs_loaded_token = 'initial_dom';
    etk_specs_locked = true;
    etk_specs_retry_count = 0;
    $('#epi_search_deferred_filters').data('etkGroupsInitialized', false);
    f_style_filter_controls();
    f_init_filter_groups();
    window.setTimeout(function(){
      try { f_init_safe_filter_float(); } catch (e) {}
    }, 60);
    return;
  }

  if (token != '') {
    data_obj = {search_token: token};
    etk_specs_base_token = token;
  } else {
    visible_ids = f_collect_visible_product_ids_for_specs();
    if (visible_ids.length < 1) {
      etk_specs_retry_count++;
      if (etk_specs_retry_count < 40) {
        window.setTimeout(function(){ f_load_filter_specs(force); }, 250);
      } else {
        $('#epi_search_deferred_filters').html('<div style="padding:5px 0;color:#777;">Filter specifications are unavailable for this result set.</div>');
      }
      return;
    }
    data_obj = {product_ids: visible_ids.join(',')};
    /* Fallback only. The preferred full-result path is the search token emitted by advanced_search_result_ajax_chunks.php. */
    etk_specs_base_token = 'visible_' + visible_ids.join('_');
  }

  etk_specs_loading = true;
  $('#epi_search_deferred_filters').html('<div style="padding:5px 0;color:#777;">Loading filter specifications...</div>');
  $.ajax({
    type: 'POST',
    url: 'filter_specs_ajax.php',
    data: data_obj,
    timeout: 15000
  }).done(function(html) {
    if ($.trim(html) != '') {
      $('#epi_search_deferred_filters').html(html);
    } else {
      $('#epi_search_deferred_filters').html('<div style="padding:5px 0;color:#777;">Filter specifications are unavailable for this result set.</div>');
    }
    $('#epi_search_deferred_filters').data('etkGroupsInitialized', false);
    etk_specs_loaded_token = etk_specs_base_token;
    etk_specs_locked = true;
    etk_specs_retry_count = 0;
    f_style_filter_controls();
    f_init_filter_groups();
    window.setTimeout(function(){
      try { f_init_safe_filter_float(); } catch (e) {}
    }, 60);
  }).fail(function() {
    $('#epi_search_deferred_filters').html('<div style="padding:5px 0;color:#777;">Filter specifications are temporarily unavailable.</div>');
  }).always(function() {
    etk_specs_loading = false;
  });
}


function f_init_mobile_filter_drawer() {
  var sidebar = $('#c-modal__filter');
  var sidebox;
  var toggle;
  var overlay;
  var close_button;
  var min_desktop_width = 760;

  if (!sidebar.length) return;
  sidebox = sidebar.find('.c-sidebox').first();
  if (!sidebox.length) sidebox = sidebar;

  sidebox.find('tr').each(function(){
    var row = $(this);
    var row_text = $.trim(row.text()).replace(/\s+/g, ' ');
    if ((row_text == 'Refine Your Results' || row_text == 'Refine Results') && row.find('#id_products_filters_form,#epi_search_deferred_filters,input,select,textarea').length < 1) {
      row.addClass('etk-filter-original-title-row');
    }
  });

  if (!$('#etk_mobile_filter_style').length) {
    $('head').append('<style id="etk_mobile_filter_style" type="text/css">@media screen and (max-width:759px){body.etk-mobile-filter-open{overflow:hidden!important;}#c-modal__filter.etk-mobile-filter-ready,#c-modal__filter.etk-filter-following.etk-mobile-filter-ready{display:block!important;position:fixed!important;top:0!important;left:-90%!important;right:auto!important;bottom:0!important;width:86%!important;max-width:360px!important;height:100%!important;max-height:100%!important;z-index:10002!important;background:#ffffff!important;box-shadow:10px 0 28px rgba(12,48,25,0.28)!important;overflow-y:auto!important;overflow-x:hidden!important;-webkit-overflow-scrolling:touch!important;transition:left 220ms ease!important;transform:none!important;-webkit-transform:none!important;margin:0!important;padding:0!important;border-right:1px solid #cfe0ca!important;border-left:0!important;}#c-modal__filter.etk-mobile-filter-ready.etk-mobile-filter-open,#c-modal__filter.etk-filter-following.etk-mobile-filter-ready.etk-mobile-filter-open{left:0!important;right:auto!important;}#c-modal__filter.etk-mobile-filter-ready .c-sidebox{display:block!important;width:100%!important;max-width:none!important;max-height:none!important;height:auto!important;overflow:visible!important;box-shadow:none!important;border-radius:0!important;padding:52px 9px 18px 9px!important;background:#ffffff!important;margin:0!important;}#c-modal__filter.etk-mobile-filter-ready .c-sidebox>table.infoBox{display:block!important;width:100%!important;max-width:100%!important;max-height:none!important;overflow:visible!important;padding-right:0!important;margin:0!important;}#c-modal__filter.etk-mobile-filter-ready .c-sidebox>table.infoBox>tbody,#c-modal__filter.etk-mobile-filter-ready .c-sidebox>table.infoBox>tbody>tr,#c-modal__filter.etk-mobile-filter-ready .c-sidebox>table.infoBox>tbody>tr>td{display:block!important;width:100%!important;max-width:100%!important;box-sizing:border-box!important;}#c-modal__filter.etk-mobile-filter-ready table,#c-modal__filter.etk-mobile-filter-ready tbody,#c-modal__filter.etk-mobile-filter-ready tr,#c-modal__filter.etk-mobile-filter-ready td{max-width:100%!important;box-sizing:border-box!important;}#c-modal__filter.etk-mobile-filter-ready .etk-filter-original-title-row{display:none!important;}#c-modal__filter.etk-mobile-filter-ready .infoBoxHeading,#c-modal__filter.etk-mobile-filter-ready td.infoBoxHeading,#c-modal__filter.etk-mobile-filter-ready th.infoBoxHeading{display:none!important;}#etk_mobile_filter_overlay{display:none!important;position:fixed!important;top:0!important;right:0!important;bottom:0!important;left:0!important;background:rgba(9,32,18,0.42)!important;z-index:10001!important;}body.etk-mobile-filter-open #etk_mobile_filter_overlay{display:block!important;}#etk_mobile_filter_toggle{display:block!important;position:fixed!important;left:14px!important;right:auto!important;bottom:16px!important;z-index:10000!important;border:0!important;border-radius:999px!important;background:#20a843!important;color:#ffffff!important;font-family:Arial, Helvetica, sans-serif!important;font-size:14px!important;line-height:18px!important;font-weight:bold!important;padding:12px 17px!important;box-shadow:0 8px 22px rgba(13,70,31,0.28)!important;cursor:pointer!important;text-align:center!important;min-width:112px!important;}#etk_mobile_filter_toggle:hover,#etk_mobile_filter_toggle:focus{background:#168737!important;outline:2px solid rgba(32,168,67,0.22)!important;outline-offset:2px!important;}#etk_mobile_filter_close{display:block!important;position:absolute!important;top:8px!important;right:10px!important;z-index:3!important;border:1px solid #cfe0ca!important;border-radius:999px!important;background:#f7fbf5!important;color:#174826!important;font-family:Arial, Helvetica, sans-serif!important;font-size:13px!important;line-height:18px!important;font-weight:bold!important;padding:7px 12px!important;cursor:pointer!important;}#etk_mobile_filter_close:hover,#etk_mobile_filter_close:focus{background:#eaf5e7!important;outline:none!important;}#etk_mobile_filter_title{display:block!important;position:absolute!important;top:0!important;left:0!important;right:0!important;height:44px!important;padding:13px 82px 10px 14px!important;border-bottom:1px solid #dce9d8!important;background:#ffffff!important;color:#0f3d23!important;font-family:Arial, Helvetica, sans-serif!important;font-size:15px!important;line-height:18px!important;font-weight:bold!important;box-sizing:border-box!important;}#c-modal__filter.etk-mobile-filter-ready form,#c-modal__filter.etk-mobile-filter-ready #id_products_filters_form,#c-modal__filter.etk-mobile-filter-ready #filters_form,#c-modal__filter.etk-mobile-filter-ready #epi_search_deferred_filters,#c-modal__filter.etk-mobile-filter-ready .etk-filter-specs{display:block!important;width:100%!important;max-width:100%!important;box-sizing:border-box!important;}#c-modal__filter.etk-mobile-filter-ready .etk-filter-top-body,#c-modal__filter.etk-mobile-filter-ready .etk-filter-cat-body,#c-modal__filter.etk-mobile-filter-ready div[id^="id_sub_products_filters_top_categories_id_"],#c-modal__filter.etk-mobile-filter-ready div[id^="id_sub_products_filters_categories_id_"]{width:100%!important;max-width:100%!important;box-sizing:border-box!important;}#c-modal__filter.etk-mobile-filter-ready .epi-filter-top,#c-modal__filter.etk-mobile-filter-ready label[for^="id_products_filters_top_categories_id_"]{margin-top:6px!important;padding:7px 8px!important;width:100%!important;max-width:100%!important;display:block!important;}#c-modal__filter.etk-mobile-filter-ready .epi-filter-cat,#c-modal__filter.etk-mobile-filter-ready label[for^="id_products_filters_categories_id_"],#c-modal__filter.etk-mobile-filter-ready label[for^="shipping_filters"]{padding-top:3px!important;padding-bottom:3px!important;min-height:22px!important;width:100%!important;max-width:100%!important;display:block!important;background-color:#f2f6ee!important;}#c-modal__filter.etk-mobile-filter-ready .epi-filter-option,#c-modal__filter.etk-mobile-filter-ready div[id^="id_div_products_filters_"]{font-size:12px!important;line-height:20px!important;padding-top:2px!important;padding-bottom:2px!important;}}@media screen and (min-width:760px){#etk_mobile_filter_toggle,#etk_mobile_filter_overlay,#etk_mobile_filter_close,#etk_mobile_filter_title{display:none!important;}#c-modal__filter.etk-mobile-filter-ready{right:auto!important;left:auto!important;height:auto!important;max-width:none!important;transition:none!important;box-shadow:none!important;border-left:0!important;border-right:0!important;}}</style>');
  }

  if (!$('#etk_mobile_filter_overlay').length) {
    $('body').append('<div id="etk_mobile_filter_overlay"></div>');
  }
  if (!$('#etk_mobile_filter_toggle').length) {
    $('body').append('<button type="button" id="etk_mobile_filter_toggle" aria-controls="c-modal__filter" aria-expanded="false">Filter Results</button>');
  }
  $('#etk_mobile_filter_title').remove();
  sidebox.prepend('<div id="etk_mobile_filter_title">Refine Results</div>');
  if (!$('#etk_mobile_filter_close').length) {
    sidebox.prepend('<button type="button" id="etk_mobile_filter_close" aria-label="Close filters">Close</button>');
  }

  sidebar.addClass('etk-mobile-filter-ready');
  toggle = $('#etk_mobile_filter_toggle');
  overlay = $('#etk_mobile_filter_overlay');
  close_button = $('#etk_mobile_filter_close');

  function viewport_width() {
    if (window.innerWidth) return window.innerWidth;
    if (document.documentElement && document.documentElement.clientWidth) return document.documentElement.clientWidth;
    return 0;
  }

  function is_mobile() {
    return viewport_width() < min_desktop_width;
  }

  function selected_count() {
    var count = 0;
    $('#id_products_filters_form input[name^="products_filters_id"]:checked').each(function(){ count++; });
    $('#id_products_filters_form input[name^="shipping_filters_id"]:checked').each(function(){ count++; });
    return count;
  }

  function update_toggle() {
    var count = selected_count();
    if (count > 0) {
      toggle.html('Filter Results (' + count + ')');
    } else {
      toggle.html('Filter Results');
    }
    if (is_mobile()) {
      toggle.show();
    } else {
      toggle.hide();
      close_drawer();
    }
  }

  function open_drawer() {
    if (!is_mobile()) return;
    sidebar.addClass('etk-mobile-filter-open');
    $('body').addClass('etk-mobile-filter-open');
    toggle.attr('aria-expanded', 'true');
  }

  function close_drawer() {
    sidebar.removeClass('etk-mobile-filter-open');
    $('body').removeClass('etk-mobile-filter-open');
    toggle.attr('aria-expanded', 'false');
  }

  toggle.off('click.etkMobileFilter').on('click.etkMobileFilter', function(e){
    e.preventDefault();
    if (sidebar.hasClass('etk-mobile-filter-open')) {
      close_drawer();
    } else {
      open_drawer();
    }
    return false;
  });
  overlay.off('click.etkMobileFilter').on('click.etkMobileFilter', function(){ close_drawer(); return false; });
  close_button.off('click.etkMobileFilter').on('click.etkMobileFilter', function(e){ e.preventDefault(); close_drawer(); return false; });
  $(document).off('keyup.etkMobileFilter').on('keyup.etkMobileFilter', function(e){
    e = e || window.event;
    if ((e.keyCode || e.which) == 27) close_drawer();
  });
  $('#id_products_filters_form').off('change.etkMobileFilterBadge').on('change.etkMobileFilterBadge', 'input', function(){ window.setTimeout(update_toggle, 30); });
  $(window).off('resize.etkMobileFilter').on('resize.etkMobileFilter', function(){ window.setTimeout(update_toggle, 80); window.setTimeout(function(){ try { f_sync_filter_widths(); } catch (e) {} }, 90); });

  update_toggle();
}


function f_sync_filter_widths() {
  var sidebar = $('#c-modal__filter');
  var sidebox;
  var table;
  var is_mobile;
  var available;
  var edge_pad;
  var scrollbar_pad;
  var content_width;
  var bar_width;
  var option_width;
  var selectors;
  var body_selectors;
  var bar_selectors;
  var option_selectors;

  if (!sidebar.length) return;
  sidebox = sidebar.find('.c-sidebox').first();
  if (!sidebox.length) sidebox = sidebar;
  table = sidebox.find('table.infoBox').first();
  is_mobile = ($(window).width() < 760);

  if (!is_mobile) {
    available = 190;
    sidebox.css('width','190px').css('max-width','190px').css('box-sizing','border-box').css('padding-right','0');
    if (table.length) {
      table.css('width','190px').css('max-width','190px').css('box-sizing','border-box').css('padding-right','0');
    }
  } else {
    available = 0;
    if (table.length) available = table.innerWidth();
    if (!available || available < 140) available = sidebox.innerWidth();
    if (!available || available < 140) return;
  }

  edge_pad = is_mobile ? 0 : 4;
  scrollbar_pad = is_mobile ? 0 : 8;
  content_width = available - scrollbar_pad;
  if (content_width < 140) content_width = available;
  bar_width = content_width - (edge_pad * 2);
  option_width = content_width - (edge_pad * 2);
  if (bar_width < 120) bar_width = content_width;
  if (option_width < 120) option_width = content_width;

  selectors = '#id_products_filters_form,#filters_form,#epi_search_deferred_filters,.etk-filter-specs';
  body_selectors = '.etk-filter-top-body,div[id^="id_sub_products_filters_top_categories_id_"],.etk-filter-cat-body,div[id^="id_sub_products_filters_categories_id_"]';
  bar_selectors = '.epi-filter-top,label[for^="id_products_filters_top_categories_id_"],.epi-filter-cat,label[for^="id_products_filters_categories_id_"],label[for^="shipping_filters"]';
  option_selectors = '.epi-filter-option,div[id^="id_div_products_filters_"],div[id^="id_div_shipping_filters_"],.etk-filter-show-more-row';

  sidebar.find(selectors).css('display','block').css('width', available + 'px').css('max-width', available + 'px').css('box-sizing','border-box');
  sidebar.find(body_selectors).css('width', available + 'px').css('max-width', available + 'px').css('box-sizing','border-box');

  /* Category/product headers: extend the background bar, but stop before the scrollbar. */
  sidebar.find(bar_selectors).css('display','block').css('width', bar_width + 'px').css('max-width', bar_width + 'px').css('box-sizing','border-box').css('margin-left', edge_pad + 'px').css('margin-right', edge_pad + 'px');

  /* Option rows and count numbers: keep text/counts inside the readable area, away from the scrollbar. */
  sidebar.find(option_selectors).css('display','block').css('width', option_width + 'px').css('max-width', option_width + 'px').css('box-sizing','border-box').css('margin-left', edge_pad + 'px').css('margin-right', edge_pad + 'px').css('padding-right','56px').css('position','relative');
  sidebar.find(option_selectors).find('.c-filter__counter').css('right','16px').css('z-index','2');

  if (!is_mobile) {
    sidebar.find('label[for^="shipping_filters"]').css('margin-top','3px').css('margin-bottom','2px');
    sidebar.find('#shipping_filters_div').css('width', option_width + 'px').css('max-width', option_width + 'px').css('box-sizing','border-box').css('margin-left', edge_pad + 'px').css('margin-right', edge_pad + 'px').css('padding','4px 56px 8px 0').css('overflow','hidden');

    /* Runtime desktop sizing must be !important because legacy osCommerce CSS and injected filter CSS can override normal inline values. */
    $('#etk_filter_width_runtime').remove();
    $('head').append('<style id="etk_filter_width_runtime" type="text/css">@media screen and (min-width:760px){' +
      '#c-modal__filter .epi-filter-top,#c-modal__filter label[for^="id_products_filters_top_categories_id_"],#c-modal__filter .epi-filter-cat,#c-modal__filter label[for^="id_products_filters_categories_id_"],#c-modal__filter label[for^="shipping_filters"]{display:block!important;width:' + bar_width + 'px!important;max-width:' + bar_width + 'px!important;margin-left:' + edge_pad + 'px!important;margin-right:' + edge_pad + 'px!important;box-sizing:border-box!important;}' +
      '#c-modal__filter .epi-filter-option,#c-modal__filter div[id^="id_div_products_filters_"],#c-modal__filter div[id^="id_div_shipping_filters_"],#c-modal__filter .etk-filter-show-more-row{display:block!important;width:' + option_width + 'px!important;max-width:' + option_width + 'px!important;margin-left:' + edge_pad + 'px!important;margin-right:' + edge_pad + 'px!important;box-sizing:border-box!important;padding-right:56px!important;position:relative!important;overflow:visible!important;}' +
      '#c-modal__filter .c-filter__counter{right:16px!important;z-index:2!important;}' +
      '#c-modal__filter label[for^="shipping_filters"]{margin-top:3px!important;margin-bottom:2px!important;}' +
      '#c-modal__filter #shipping_filters_div{width:' + option_width + 'px!important;max-width:' + option_width + 'px!important;margin-left:' + edge_pad + 'px!important;margin-right:' + edge_pad + 'px!important;box-sizing:border-box!important;padding:4px 56px 8px 0!important;overflow:hidden!important;}' +
      '}</style>');
  }
}
function f_normalize_shipping_filter_labels() {
  $('#shipping_filters_div label').each(function(){
    $(this).contents().each(function(){
      if (this.nodeType == 3 && this.nodeValue) {
        this.nodeValue = this.nodeValue.replace('2 Days', '3 Days').replace('2 days', '3 days');
      }
    });
  });
}
function f_remove_legacy_shipping_filter_ui() {
  var shipping_label = $('label[for="shipping_filters"],label[for^="shipping_filters"]');
  $('#shipping_filters_div').remove();
  shipping_label.remove();
  $('input[name="shipping_filters"],input[name^="shipping_filters_id"]').remove();
}

function f_wrap_static_filter_specs() {
  var form;
  var holder;
  var first_filter;
  var nodes;
  if ($('#epi_search_deferred_filters').length) return;
  if ($('.etk-filter-static-specs').length) return;
  form = $('#id_products_filters_form');
  if (!form.length) return;
  first_filter = form.children('label[for^="id_products_filters_top_categories_id_"],.epi-filter-top,label[for^="id_products_filters_categories_id_"],.epi-filter-cat,div[id^="id_sub_products_filters_top_categories_id_"],div[id^="id_sub_products_filters_categories_id_"],div[id^="id_div_products_filters_"],div[id^="id_sub_arr_products_filters_categories_id_"]').first();
  if (!first_filter.length) return;
  holder = $('<div class="etk-filter-specs etk-filter-static-specs"></div>');
  holder.css({
    'padding':'6px 5px 10px 5px',
    'font-size':'11px',
    'line-height':'16px',
    'color':'#555555'
  });
  nodes = form.children().filter(function(){
    var node = $(this);
    var tag = (this.tagName || '').toLowerCase();
    var id = node.attr('id') || '';
    var html_for = node.attr('for') || '';
    if (tag == 'script') return false;
    if (tag == 'input' && (node.attr('type') || '').toLowerCase() == 'hidden') return false;
    if (id == 'etk_filter_specs_data' || node.hasClass('etk_filter_specs_data')) return false;
    if (html_for.indexOf('id_products_filters_top_categories_id_') == 0) return true;
    if (html_for.indexOf('id_products_filters_categories_id_') == 0) return true;
    if (id.indexOf('id_sub_products_filters_top_categories_id_') == 0) return true;
    if (id.indexOf('id_sub_products_filters_categories_id_') == 0) return true;
    if (id.indexOf('id_div_products_filters_') == 0) return true;
    if (id.indexOf('id_sub_arr_products_filters_categories_id_') == 0) return true;
    if (node.hasClass('epi-filter-top') || node.hasClass('epi-filter-cat') || node.hasClass('epi-filter-option')) return true;
    if (tag == 'div' && $.trim(node.text() || '') == '' && !node.children().length) return true;
    return false;
  });
  if (!nodes.length) return;
  first_filter.before(holder);
  holder.append(nodes);
}
function f_style_filter_controls() {
  if (!$('#etk_filter_ui_style').length) {
    $('head').append('<style id="etk_filter_ui_style" type="text/css">#c-modal__filter,#c-modal__filter *{box-sizing:border-box!important;}#c-modal__filter{left:auto!important;right:auto!important;bottom:auto!important;transform:none!important;-webkit-transform:none!important;}#c-modal__filter .c-sidebox{background:#fff!important;overflow:visible!important;padding-right:0!important;}#c-modal__filter .c-sidebox>table.infoBox{width:100%!important;max-width:100%!important;border-collapse:collapse!important;scrollbar-width:thin!important;scrollbar-color:#8e9c89 #f3f7f1!important;}#c-modal__filter .c-sidebox>table.infoBox>tbody,#c-modal__filter .c-sidebox>table.infoBox>tbody>tr,#c-modal__filter .c-sidebox>table.infoBox>tbody>tr>td{width:100%!important;max-width:100%!important;box-sizing:border-box!important;}#c-modal__filter .c-sidebox form,#c-modal__filter .c-sidebox #id_products_filters_form,#c-modal__filter .c-sidebox #filters_form,#c-modal__filter .c-sidebox #epi_search_deferred_filters,#c-modal__filter .c-sidebox .etk-filter-specs{display:block!important;width:100%!important;max-width:100%!important;box-sizing:border-box!important;}#c-modal__filter .c-sidebox .etk-filter-top-body,#c-modal__filter .c-sidebox .etk-filter-cat-body,#c-modal__filter .c-sidebox div[id^="id_sub_products_filters_top_categories_id_"],#c-modal__filter .c-sidebox div[id^="id_sub_products_filters_categories_id_"]{width:100%!important;max-width:100%!important;box-sizing:border-box!important;}#c-modal__filter .epi-filter-top,#c-modal__filter label[for^="id_products_filters_top_categories_id_"],#c-modal__filter label[for^="id_products_filters_categories_id_"],#c-modal__filter .epi-filter-cat,#c-modal__filter label[for="shipping_filters"]{display:block!important;width:100%!important;max-width:100%!important;box-sizing:border-box!important;margin-right:0!important;}#c-modal__filter .c-sidebox>table.infoBox::-webkit-scrollbar{width:5px!important;}#c-modal__filter .c-sidebox>table.infoBox::-webkit-scrollbar-track{background:#f3f7f1!important;}#c-modal__filter .c-sidebox>table.infoBox::-webkit-scrollbar-thumb{background:#9cab96!important;border-radius:10px!important;}#c-modal__filter .epi-filter-option,#c-modal__filter div[id^="id_div_products_filters_"]{position:relative!important;padding-right:56px!important;min-width:0!important;overflow:visible!important;}#c-modal__filter .c-filter__counter{position:absolute!important;right:16px!important;top:0!important;color:#6c756c!important;white-space:nowrap!important;z-index:2!important;}#c-modal__filter label{max-width:100%!important;overflow-wrap:break-word!important;}#c-modal__filter .etk-filter-group-toggle{float:right!important;display:inline-block!important;width:18px!important;height:18px!important;line-height:17px!important;text-align:center!important;border:1px solid #cbd8c7!important;border-radius:3px!important;background:#fff!important;color:#2b5e30!important;font-size:12px!important;font-weight:bold!important;cursor:pointer!important;margin-left:4px!important;}#c-modal__filter .etk-filter-group-toggle:hover{background:#f0f7ed!important;}#c-modal__filter .etk-filter-top-label{cursor:default!important;padding-right:4px!important;}#c-modal__filter .etk-filter-top-label input{margin-right:4px!important;}#c-modal__filter .etk-filter-top-body{clear:both!important;}#c-modal__filter label[for^="id_products_filters_categories_id_"],#c-modal__filter .epi-filter-cat,#c-modal__filter label[for="shipping_filters"]{background:#f2f6ee!important;background-image:none!important;position:relative!important;padding-left:22px!important;overflow:hidden!important;}#c-modal__filter label[for^="id_products_filters_categories_id_"]:before,#c-modal__filter .epi-filter-cat:before,#c-modal__filter label[for="shipping_filters"]:before{content:""!important;position:absolute!important;left:7px!important;top:6px!important;width:0!important;height:0!important;border-style:solid!important;border-width:7px 5px 0 5px!important;border-color:#31a64a transparent transparent transparent!important;}#c-modal__filter label[for^="id_products_filters_categories_id_"]:not(.lfad):before,#c-modal__filter label[for="shipping_filters"]:not(.lfad):before{border-width:5px 0 5px 7px!important;border-color:transparent transparent transparent #31a64a!important;top:5px!important;left:8px!important;}@media screen and (min-width:760px){#c-modal__filter.etk-filter-following{position:relative!important;left:auto!important;right:auto!important;bottom:auto!important;z-index:80!important;background:#fff!important;transform:none!important;-webkit-transform:none!important;}#c-modal__filter .c-sidebox{width:190px!important;max-width:190px!important;margin-left:auto!important;margin-right:auto!important;}#c-modal__filter.etk-filter-following .c-sidebox{overflow:visible!important;padding-right:0!important;box-shadow:0 5px 16px rgba(16,65,34,0.12)!important;border-radius:4px!important;}#c-modal__filter.etk-filter-following .c-sidebox>table.infoBox{display:block!important;width:190px!important;max-width:190px!important;overflow-y:auto!important;overflow-x:hidden!important;padding-right:0!important;}}@media screen and (max-width:759px){#c-modal__filter.etk-filter-following:not(.etk-mobile-filter-ready){position:static!important;top:auto!important;left:auto!important;width:auto!important;max-height:none!important;overflow:visible!important;}#c-modal__filter:not(.etk-mobile-filter-ready) .c-sidebox{width:auto!important;max-width:none!important;max-height:none!important;overflow:visible!important;padding-right:0!important;box-shadow:none!important;}#c-modal__filter:not(.etk-mobile-filter-ready) .c-sidebox>table.infoBox{display:table!important;max-height:none!important;overflow:visible!important;padding-right:0!important;}}</style>');
  }
  if (!$('#etk_filter_clean_wrapper_style').length) {
    $('head').append('<style id="etk_filter_clean_wrapper_style" type="text/css">' +
      '#etkUnifiedFilterBox,#etkUnifiedFilterBox *{box-sizing:border-box!important;}' +
      '#etkUnifiedFilterBox{display:block!important;width:190px!important;max-width:190px!important;min-width:0!important;margin:0 auto 14px auto!important;padding:0!important;background:#ffffff!important;border:0!important;border-radius:4px!important;box-shadow:0 5px 16px rgba(16,65,34,0.12)!important;overflow:visible!important;clear:both!important;float:none!important;color:#111111!important;font-family:Arial, Helvetica, sans-serif!important;}' +
      '#etkUnifiedFilterTitle{display:block!important;width:190px!important;max-width:190px!important;margin:0!important;padding:3px 8px 4px 8px!important;background:#202020!important;color:#ffffff!important;border:0!important;border-radius:4px 4px 0 0!important;font-family:Arial, Helvetica, sans-serif!important;font-size:12px!important;font-weight:bold!important;line-height:16px!important;text-align:left!important;overflow:hidden!important;white-space:nowrap!important;}' +
      '#etkUnifiedFilterBody{display:block!important;width:190px!important;max-width:190px!important;min-width:0!important;margin:0!important;padding:0!important;background:#ffffff!important;border:0!important;border-radius:0 0 4px 4px!important;overflow:visible!important;clear:both!important;float:none!important;}' +
      '#etkUnifiedFilterBox #filters_form,#etkUnifiedFilterBox #id_products_filters_form,#etkUnifiedFilterBox form{display:block!important;width:190px!important;max-width:190px!important;min-width:0!important;margin:0!important;padding:0!important;border:0!important;background:transparent!important;overflow:visible!important;float:none!important;clear:both!important;}#etkUnifiedFilterBox #epi_search_deferred_filters,#etkUnifiedFilterBox .etk-filter-static-specs,#etkUnifiedFilterBox .etk-filter-specs{display:block!important;width:190px!important;max-width:190px!important;min-width:0!important;margin:0!important;padding:6px 5px 10px 5px!important;background:#ffffff!important;border:0!important;color:#555555!important;font-family:Arial, Helvetica, sans-serif!important;font-size:11px!important;line-height:16px!important;box-sizing:border-box!important;overflow:visible!important;}' +
      '#etkUnifiedFilterBox:after,#etkUnifiedFilterBody:after,#etkUnifiedFilterBox #filters_form:after{content:""!important;display:block!important;clear:both!important;}' +
      '@media screen and (max-width:759px){#etkUnifiedFilterBox{width:100%!important;max-width:100%!important;margin:0!important;border-radius:0!important;box-shadow:none!important;}#etkUnifiedFilterTitle{display:none!important;}#etkUnifiedFilterBody,#etkUnifiedFilterBox #filters_form,#etkUnifiedFilterBox #id_products_filters_form,#etkUnifiedFilterBox form,#etkUnifiedFilterBox #epi_search_deferred_filters,#etkUnifiedFilterBox .etk-filter-static-specs,#etkUnifiedFilterBox .etk-filter-specs{width:100%!important;max-width:100%!important;}#etkUnifiedFilterBody,#etkUnifiedFilterBox #epi_search_deferred_filters,#etkUnifiedFilterBox .etk-filter-static-specs{padding:0!important;}}' +
      '</style>');
  }
  if (!$('#etk_filter_collapse_style').length) {
    $('head').append('<style id="etk_filter_collapse_style" type="text/css">#c-modal__filter .etk-filter-top-label,#c-modal__filter .etk-filter-cat-label{cursor:pointer!important;}#c-modal__filter .etk-filter-top-label input[name^="products_top_categories_id"]{cursor:pointer!important;}#c-modal__filter .etk-filter-cat-label input[id^="id_products_filters_categories_id_"]{position:absolute!important;left:-9999px!important;width:1px!important;height:1px!important;opacity:0!important;}#c-modal__filter label.etk-filter-cat-label:before,#c-modal__filter .epi-filter-cat.etk-filter-cat-label:before{content:""!important;position:absolute!important;width:0!important;height:0!important;border-style:solid!important;}#c-modal__filter label.etk-filter-cat-label.etk-filter-cat-collapsed:before,#c-modal__filter .epi-filter-cat.etk-filter-cat-label.etk-filter-cat-collapsed:before{border-width:5px 0 5px 7px!important;border-color:transparent transparent transparent #31a64a!important;top:5px!important;left:8px!important;}#c-modal__filter label.etk-filter-cat-label:not(.etk-filter-cat-collapsed):before,#c-modal__filter .epi-filter-cat.etk-filter-cat-label:not(.etk-filter-cat-collapsed):before{border-width:7px 5px 0 5px!important;border-color:#31a64a transparent transparent transparent!important;left:7px!important;top:6px!important;}#c-modal__filter .etk-filter-top-label .etk-filter-group-toggle{cursor:pointer!important;}#c-modal__filter .etk-filter-cat-body{clear:both!important;overflow:hidden!important;}#c-modal__filter .etk-filter-body-collapsed{display:none!important;}#c-modal__filter.etk-filter-following .c-sidebox{max-width:190px!important;overflow:hidden!important;}#c-modal__filter.etk-filter-following .c-sidebox>table.infoBox{overflow-y:auto!important;overflow-x:hidden!important;}</style>');
  }
  if (!$('#etk_filter_option_limit_style').length) {
    $('head').append('<style id="etk_filter_option_limit_style" type="text/css">#c-modal__filter div[id^="id_div_products_filters_"].etk-filter-option-extra-hidden,#c-modal__filter .epi-filter-option.etk-filter-option-extra-hidden{display:none!important;}#c-modal__filter div[id^="id_div_products_filters_"] label[for^="id_products_filters_"],#c-modal__filter .epi-filter-option label[for^="id_products_filters_"],#c-modal__filter #shipping_filters_div label{display:block!important;box-sizing:border-box!important;max-width:100%!important;padding-left:18px!important;padding-right:0!important;text-indent:-18px!important;line-height:15px!important;white-space:normal!important;overflow-wrap:break-word!important;word-wrap:break-word!important;color:#555555!important;}#c-modal__filter div[id^="id_div_products_filters_"] label[for^="id_products_filters_"] input,#c-modal__filter .epi-filter-option label[for^="id_products_filters_"] input,#c-modal__filter #shipping_filters_div label input{text-indent:0!important;margin-right:3px!important;}#c-modal__filter #shipping_filters_div,#c-modal__filter #shipping_filters_div label{color:#555555!important;font-weight:normal!important;}#c-modal__filter .etk-filter-show-more-row{display:block!important;width:100%!important;max-width:100%!important;box-sizing:border-box!important;position:relative!important;border:0!important;background:transparent!important;color:#31a64a!important;font-family:Arial, Helvetica, sans-serif!important;font-size:11px!important;line-height:16px!important;font-weight:normal!important;text-align:left!important;padding:2px 56px 2px 18px!important;margin:1px 0 4px 0!important;cursor:pointer!important;white-space:normal!important;overflow-wrap:break-word!important;}#c-modal__filter .etk-filter-show-more-row:hover,#c-modal__filter .etk-filter-show-more-row:focus{background:transparent!important;color:#1f7d32!important;text-decoration:underline!important;outline:none!important;}#c-modal__filter .etk-filter-show-more-row .c-filter__counter{position:absolute!important;right:16px!important;top:2px!important;color:#6c756c!important;font-weight:normal!important;white-space:nowrap!important;text-decoration:none!important;}</style>');
  }
  f_remove_legacy_shipping_filter_ui();
  f_normalize_shipping_filter_labels();
  f_wrap_static_filter_specs();
  $('input[id^="id_products_filters_categories_id_"]').css('height','1px').css('width','0px').css('opacity','0');
  $('div[id^="id_sub_arr_products_filters_categories_id_"]').css('display','none').css('cursor','pointer').css('height','18px').css('text-align','right').css('padding-right','10px').css('color','#777777');
  $('label[for^="shipping_filters"]').css('display','block').css('padding-left','20px').css('font-size','11px').css('line-height','18px').css('font-weight','bold').css('background','#f2f6ee').css('margin-top','3px').css('margin-bottom','2px');
  $('input[name^="products_filters_id"],input[name^="products_top_categories_id"]').css('position','relative').css('top','2px').css('background','none');
  $('label[for^="id_products_filters_categories_id_"]').css('display','block').css('padding-left','20px').css('font-size','11px').css('line-height','18px').css('font-weight','bold').css('background','#f2f6ee');
  $('.lfad').css('background-position', '5px 0px');
  $('div[id^="id_div_products_filters_"]').css('position','relative');
  $('div[id^="id_div_products_filters_"] div.c-filter__counter,.epi-filter-option div.c-filter__counter').css('position','absolute').css('right','16px').css('top','0px').css('color','#777777');
  $('label[for^="id_products_filters_top_categories_id_"]').css('display','block').css('font-size','13px').css('line-height','18px').css('font-weight','bold').css('background','url(external/jscookmenu/themeie/gradient.gif) repeat-x top left #eaf0e3').css('padding','3px 4px');
  $('.epi-filter-top').css('display','block').css('font-size','13px').css('line-height','18px').css('font-weight','bold').css('background','url(external/jscookmenu/themeie/gradient.gif) repeat-x top left #eaf0e3').css('padding','3px 4px').css('margin-top','4px');
  $('.epi-filter-cat').css('display','block').css('padding-left','20px').css('font-size','11px').css('line-height','18px').css('font-weight','bold').css('background','#f2f6ee').css('margin-top','2px');
  $('.epi-filter-option').css('position','relative').css('font-size','11px').css('line-height','18px').css('padding-right','56px');
  $('.epi-filter-option input').css('position','relative').css('top','2px').css('background','none');
  try { f_sync_filter_widths(); } catch (e) {}
  try { f_init_mobile_filter_drawer(); } catch (e) {}
  window.setTimeout(function(){ try { f_sync_filter_widths(); } catch (e) {} }, 80);
}

function f_get_filter_cat_id_from_body(body) {
  var id = body.attr('id') || '';
  var m = id.match(/id_sub_products_filters_categories_id_(\d+)/);
  if (m && m[1]) return m[1];
  return '';
}

function f_set_filter_options_expanded(body, expanded) {
  var cat_id = f_get_filter_cat_id_from_body(body);
  if (cat_id != '') {
    etk_filter_option_expanded[cat_id] = expanded ? 1 : 0;
  }
  body.data('etkFilterOptionsExpanded', expanded ? true : false);
}

function f_init_filter_option_limits() {
  var limit = parseInt(etk_filter_option_limit, 10) || 5;

  $('div[id^="id_sub_products_filters_categories_id_"]').each(function(){
    var body = $(this);
    var cat_id = f_get_filter_cat_id_from_body(body);
    var options;
    var total;
    var expanded;
    var hidden_count;
    var button_text;

    body.addClass('etk-filter-cat-body');
    body.children('.etk-filter-show-more-row').remove();

    options = body.children('div[id^="id_div_products_filters_"],.epi-filter-option');
    total = options.length;

    options.each(function(){
      $(this).find('label[for^="id_products_filters_"]').addClass('etk-filter-option-label');
    });

    if (total <= limit) {
      options.removeClass('etk-filter-option-extra-hidden');
      return;
    }

    expanded = (body.data('etkFilterOptionsExpanded') === true || (cat_id != '' && etk_filter_option_expanded[cat_id] == 1));
    hidden_count = total - limit;

    options.each(function(index){
      if (expanded || index < limit) {
        $(this).removeClass('etk-filter-option-extra-hidden');
      } else {
        $(this).addClass('etk-filter-option-extra-hidden');
      }
    });

    button_text = expanded ? 'Show fewer' : 'Show more';
    if (expanded) {
      body.append('<button type="button" class="etk-filter-show-more-row" data-etk-filter-cat-id="' + f_etk_html_escape(cat_id) + '"><span class="etk-filter-show-more-text">' + button_text + '</span></button>');
    } else {
      body.append('<button type="button" class="etk-filter-show-more-row" data-etk-filter-cat-id="' + f_etk_html_escape(cat_id) + '"><span class="etk-filter-show-more-text">' + button_text + '</span><span class="c-filter__counter">(' + f_etk_html_escape(hidden_count) + ')</span></button>');
    }
  });
}

function f_init_filter_groups() {
  var wrap = $('#epi_search_deferred_filters');
  var groups = [];
  var max_index = -1;
  var max_count = -1;
  var i;

  if (!wrap.length) wrap = $('#id_products_filters_form');
  if (!wrap.length) wrap = $('#filters_form');
  if (!wrap.length) wrap = $('#c-modal__filter');
  if (!wrap.length) return;
  if (wrap.data('etkGroupsInitialized') && wrap.find('.etk-filter-group-toggle').length && wrap.find('.etk-filter-cat-label').length) return;

  function schedule_filter_reflow() {
    window.setTimeout(function(){ try { f_init_safe_filter_float(); } catch (ignore) {} }, 50);
    window.setTimeout(function(){ try { f_sync_filter_widths(); } catch (ignore2) {} }, 60);
  }

  function get_top_id_from_label(label) {
    var input = label.find('input[name^="products_top_categories_id"]');
    var id = '';
    var m;
    if (!input.length) return '';
    id = input.attr('id') || '';
    m = id.match(/id_products_filters_top_categories_id_(\d+)/);
    if (!m || !m[1]) return '';
    return m[1];
  }

  function get_top_body_from_label(label) {
    var top_id = get_top_id_from_label(label);
    if (top_id == '') return $();
    return $('#id_sub_products_filters_top_categories_id_' + top_id);
  }

  function set_top_open(label, body, open, user_action) {
    var top_id;
    if (!body.length) return;
    top_id = get_top_id_from_label(label);
    if (user_action && top_id != '') {
      etk_filter_top_open_state[top_id] = open ? 1 : 0;
      etk_filter_top_user_state[top_id] = 1;
    }
    if (open) {
      body.removeClass('etk-filter-body-collapsed').show();
      label.removeClass('etk-filter-top-collapsed');
      label.find('.etk-filter-group-toggle').text('-');
    } else {
      body.addClass('etk-filter-body-collapsed').hide();
      label.addClass('etk-filter-top-collapsed');
      label.find('.etk-filter-group-toggle').text('+');
    }
  }

  function get_cat_id_from_label(label) {
    var input = label.find('input[id^="id_products_filters_categories_id_"]');
    var id = '';
    var m;
    if (input.length) {
      id = input.attr('id') || '';
    } else {
      id = label.attr('for') || '';
    }
    m = id.match(/id_products_filters_categories_id_(\d+)/);
    if (!m || !m[1]) return '';
    return m[1];
  }

  function get_cat_body_from_label(label) {
    var cat_id = get_cat_id_from_label(label);
    if (cat_id == '') return $();
    return $('#id_sub_products_filters_categories_id_' + cat_id);
  }

  function set_cat_open(label, body, open, user_action) {
    var cat_id;
    if (!body.length) return;
    cat_id = get_cat_id_from_label(label);
    if (user_action && cat_id != '') {
      etk_filter_cat_open_state[cat_id] = open ? 1 : 0;
      etk_filter_cat_user_state[cat_id] = 1;
    }
    if (open) {
      body.removeClass('etk-filter-body-collapsed').show();
      label.removeClass('etk-filter-cat-collapsed').addClass('lfad');
    } else {
      body.addClass('etk-filter-body-collapsed').hide();
      label.addClass('etk-filter-cat-collapsed').removeClass('lfad');
    }
  }

  function cat_has_selected_filters(body) {
    return (body.find('input[name^="products_filters_id"]:checked').length > 0);
  }

  function apply_default_open_category_limit() {
    var limit = parseInt(etk_filter_default_open_category_limit, 10) || 5;

    if (limit < 1) return;

    wrap.find('div[id^="id_sub_products_filters_top_categories_id_"]').each(function(){
      var top_body = $(this);
      var open_items = [];
      var open_count = 0;
      var i2;

      if (top_body.data('etkDefaultCatLimitApplied')) return;

      top_body.children('label.etk-filter-cat-label').each(function(){
        var cat_label = $(this);
        var cat_body = get_cat_body_from_label(cat_label);
        var cat_id = get_cat_id_from_label(cat_label);
        if (!cat_body.length) return;
        if (cat_body.css('display') != 'none' && !cat_body.hasClass('etk-filter-body-collapsed')) {
          open_items.push({
            label: cat_label,
            body: cat_body,
            id: cat_id,
            active: cat_has_selected_filters(cat_body),
            user_state: (cat_id != '' && etk_filter_cat_user_state[cat_id] == 1),
            user_open: (cat_id != '' && etk_filter_cat_open_state[cat_id] == 1)
          });
        }
      });

      if (open_items.length > limit) {
        for (i2 = 0; i2 < open_items.length; i2++) {
          if (open_items[i2].user_state) {
            if (open_items[i2].user_open) {
              open_count++;
            }
          } else if (open_items[i2].active) {
            open_count++;
          } else if (open_count < limit) {
            open_count++;
          } else {
            set_cat_open(open_items[i2].label, open_items[i2].body, false, false);
          }
        }
      }

      top_body.data('etkDefaultCatLimitApplied', true);
    });
  }

  wrap.find('label[for^="id_products_filters_top_categories_id_"]').each(function(){
    var label = $(this);
    var input = label.find('input[name^="products_top_categories_id"]');
    var body;
    var count;
    var active;

    if (!input.length) return;
    body = get_top_body_from_label(label);
    if (!body.length) return;

    label.addClass('etk-filter-top-label');
    body.addClass('etk-filter-top-body');
    count = parseInt(body.attr('data-etk-spec-count'), 10);
    if (isNaN(count) || count < 0) {
      count = body.find('input[name^="products_filters_id"]').length;
    }
    active = (body.find('input[name^="products_filters_id"]:checked').length > 0);
    groups.push({label: label, body: body, count: count, active: active});
    if (count > max_count) {
      max_count = count;
      max_index = groups.length - 1;
    }
  });

  if (groups.length) {
    for (i = 0; i < groups.length; i++) {
      if (!groups[i].label.find('.etk-filter-group-toggle').length) {
        groups[i].label.append('<span class="etk-filter-group-toggle" title="Expand or collapse this product type">+</span>');
      }
    }

    for (i = 0; i < groups.length; i++) {
      var group_top_id = get_top_id_from_label(groups[i].label);
      if (group_top_id != '' && etk_filter_top_user_state[group_top_id] == 1) {
        set_top_open(groups[i].label, groups[i].body, etk_filter_top_open_state[group_top_id] == 1, false);
      } else if (groups[i].active || i == max_index) {
        set_top_open(groups[i].label, groups[i].body, true, false);
      } else {
        set_top_open(groups[i].label, groups[i].body, false, false);
      }
    }
  }

  wrap.find('label[for^="id_products_filters_categories_id_"], .epi-filter-cat').each(function(){
    var label = $(this);
    var body = get_cat_body_from_label(label);
    var cat_id;
    if (!body.length) return;
    label.addClass('etk-filter-cat-label');
    body.addClass('etk-filter-cat-body');
    cat_id = get_cat_id_from_label(label);
    if (cat_id != '' && etk_filter_cat_user_state[cat_id] == 1) {
      set_cat_open(label, body, etk_filter_cat_open_state[cat_id] == 1, false);
    } else if (body.css('display') == 'none') {
      set_cat_open(label, body, false, false);
    } else {
      set_cat_open(label, body, true, false);
    }
  });

  apply_default_open_category_limit();
  f_init_filter_option_limits();

  wrap.off('click.etkFilterGroup');

  wrap.on('click.etkFilterGroup', '.etk-filter-group-toggle', function(e){
    var label;
    var body;

    e.preventDefault();
    e.stopPropagation();
    label = $(this).closest('label');
    body = get_top_body_from_label(label);
    if (!body.length) return false;
    set_top_open(label, body, body.css('display') == 'none', true);
    schedule_filter_reflow();
    return false;
  });

  wrap.on('click.etkFilterGroup', 'label.etk-filter-top-label', function(e){
    var target = $(e.target);
    var body;

    if (target.is('input') || target.closest('input').length) return true;
    if (target.hasClass('etk-filter-group-toggle')) return false;
    e.preventDefault();
    e.stopPropagation();
    body = get_top_body_from_label($(this));
    if (!body.length) return false;
    set_top_open($(this), body, body.css('display') == 'none', true);
    schedule_filter_reflow();
    return false;
  });

  wrap.on('click.etkFilterGroup', 'label.etk-filter-cat-label', function(e){
    var target = $(e.target);
    var body;

    if (target.is('a') || target.closest('a').length) return true;
    e.preventDefault();
    e.stopPropagation();
    body = get_cat_body_from_label($(this));
    if (!body.length) return false;
    set_cat_open($(this), body, body.css('display') == 'none', true);
    schedule_filter_reflow();
    return false;
  });

  wrap.on('click.etkFilterGroup', '.etk-filter-show-more-row', function(e){
    var button = $(this);
    var body = button.closest('div[id^="id_sub_products_filters_categories_id_"]');
    var expanded;

    e.preventDefault();
    e.stopPropagation();
    if (!body.length) return false;
    expanded = !(body.data('etkFilterOptionsExpanded') === true || etk_filter_option_expanded[f_get_filter_cat_id_from_body(body)] == 1);
    f_set_filter_options_expanded(body, expanded);
    f_init_filter_option_limits();
    schedule_filter_reflow();
    return false;
  });

  wrap.data('etkGroupsInitialized', true);
}

function f_init_safe_filter_float() {
  var sidebar;
  var sidebox;
  var original_top = 0;
  var resize_timer = null;
  var scroll_timer = null;
  var filter_scroll_box = $();
  var min_desktop_width = 760;
  var last_sticky_state = null;
  var last_spacer_height = -1;
  var last_header_height = -1;

  sidebar = document.getElementById('c-modal__filter');
  if (!sidebar) return;
  sidebox = $('.c-sidebox', sidebar).first();
  if (!sidebox.length) sidebox = $(sidebar);
  filter_scroll_box = $('#epi_search_deferred_filters').closest('table.infoBox');
  if (!filter_scroll_box.length) filter_scroll_box = sidebox.find('table.infoBox').first();
  if (!filter_scroll_box.length) filter_scroll_box = sidebox;

  /* This file is the only owner of desktop filter-follow behavior. Remove old
     template/CSS experiments so the live top value below is not overridden. */
  $('#etk_filter_float_placeholder').remove();
  $('#etk_filter_fixed_placeholder').remove();
  $('#etk_filter_sticky_placeholder').remove();
  $('#etk_filter_sticky_style').remove();
  $('#etk_filter_follow_style').remove();
  $('#etkColumnLeftStickyCss').remove();
  $('#etkSearchResultStickyCss').remove();
  $('#etk_filter_header_offset_override_style').remove();

  $('head').append('<style id="etk_filter_header_offset_override_style" type="text/css">' +
    '@media screen and (min-width:760px){' +
    'body.etkHasFilterBox #c-modal__filter,body.etkHasFilterBox .c-modal__filter{position:relative!important;left:auto!important;right:auto!important;bottom:auto!important;margin-top:0!important;margin-left:0!important;padding-top:0!important;transform:none!important;-webkit-transform:none!important;z-index:80!important;background:#ffffff!important;}' +
    'body.etkHasFilterBox #c-modal__filter.etk-filter-following,body.etkHasFilterBox .c-modal__filter.etk-filter-following{position:relative!important;left:auto!important;right:auto!important;bottom:auto!important;margin-top:0!important;margin-left:0!important;padding-top:0!important;transform:none!important;-webkit-transform:none!important;z-index:80!important;background:#ffffff!important;}' +
    'body.etkHasFilterBox #c-modal__filter .c-sidebox,body.etkHasFilterBox .c-modal__filter .c-sidebox{overflow:visible!important;padding-right:0!important;}' +
    '}@media screen and (max-width:759px){#c-modal__filter,.c-modal__filter{top:auto!important;left:auto!important;right:auto!important;bottom:auto!important;}}' +
    '</style>');

  function has_class(el, cls) {
    if (!el || !el.className) return false;
    return (' ' + el.className + ' ').indexOf(' ' + cls + ' ') > -1;
  }

  function viewport_width() {
    if (window.innerWidth) return window.innerWidth;
    if (document.documentElement && document.documentElement.clientWidth) return document.documentElement.clientWidth;
    return 0;
  }

  function page_y_offset() {
    if (typeof window.pageYOffset == 'number') return window.pageYOffset;
    if (document.documentElement && document.documentElement.scrollTop) return document.documentElement.scrollTop;
    if (document.body && document.body.scrollTop) return document.body.scrollTop;
    return 0;
  }

  function viewport_height() {
    if (window.innerHeight) return window.innerHeight;
    if (document.documentElement && document.documentElement.clientHeight) return document.documentElement.clientHeight;
    return 600;
  }

  function get_sticky_state() {
    return $('body').hasClass('etkHeaderStickyActive') ? 1 : 0;
  }

  function get_spacer_height() {
    var spacer = $('.etkHeaderTopBarSpacer').first();
    return spacer.length ? (spacer.outerHeight() || 0) : 0;
  }

  function get_header_height() {
    var header = $('.etkHeaderTopBarShell.etkHeaderTopBarShellFixed').first();
    if (!header.length) header = $('.etkHeaderTopBarShell').first();
    return header.length ? (header.outerHeight() || 0) : 0;
  }

  function set_filter_style(name, value) {
    if (!sidebar || !sidebar.style) return;
    if (sidebar.style.setProperty) {
      sidebar.style.setProperty(name, value, 'important');
    } else {
      sidebar.style[name] = value;
    }
  }

  function clear_filter_style(name) {
    if (!sidebar || !sidebar.style) return;
    if (sidebar.style.removeProperty) {
      sidebar.style.removeProperty(name);
    } else {
      sidebar.style[name] = '';
    }
  }

  function get_header_offset() {
    var header_height = get_header_height();
    var offset = 8;

    if (get_sticky_state()) {
      offset = header_height > 0 ? header_height + 12 : 150;
      if (offset < 150) offset = 150;
    }

    return offset;
  }

  function is_desktop() {
    if (viewport_width() < min_desktop_width) return false;
    if ($('#c-modal__filter').hasClass('l-notranslate')) return false;
    return true;
  }

  function get_footer_top() {
    var footer = $('table.footer:visible').first();
    var off;
    if (!footer.length) footer = $('table.footer').first();
    if (!footer.length) footer = $('.l-footer__mobile:visible').first();
    if (footer.length) {
      off = footer.offset();
      if (off && off.top) return off.top;
    }
    return $(document).height();
  }

  function clear_follow() {
    $(sidebar).removeClass('etk-filter-following');
    clear_filter_style('position');
    clear_filter_style('top');
    clear_filter_style('left');
    clear_filter_style('right');
    clear_filter_style('bottom');
    clear_filter_style('inset');
    clear_filter_style('-webkit-transform');
    clear_filter_style('transform');
    clear_filter_style('width');
    clear_filter_style('max-height');
    clear_filter_style('overflow-y');
    clear_filter_style('overflow-x');
    clear_filter_style('z-index');
    clear_filter_style('background');
    sidebox.css({'max-height':'','overflow-y':'','overflow-x':'','padding-right':'','overflow':''});
    filter_scroll_box.css({'display':'','max-height':'','overflow-y':'','overflow-x':'','padding-right':''});
  }

  function remember_measure_state() {
    last_sticky_state = get_sticky_state();
    last_spacer_height = get_spacer_height();
    last_header_height = get_header_height();
  }

  function measure_state_changed() {
    var sticky_state = get_sticky_state();
    var spacer_height = get_spacer_height();
    var header_height = get_header_height();

    if (last_sticky_state === null) return true;
    if (sticky_state != last_sticky_state) return true;
    if (Math.abs(spacer_height - last_spacer_height) > 1) return true;
    if (Math.abs(header_height - last_header_height) > 1) return true;
    return false;
  }

  function measure_original() {
    var rect;

    if (!is_desktop()) {
      clear_follow();
      return;
    }

    $(sidebar).removeClass('etk-filter-following');
    clear_filter_style('position');
    clear_filter_style('top');
    clear_filter_style('left');
    clear_filter_style('right');
    clear_filter_style('bottom');
    clear_filter_style('inset');
    clear_filter_style('-webkit-transform');
    clear_filter_style('transform');

    rect = sidebar.getBoundingClientRect ? sidebar.getBoundingClientRect() : null;
    if (rect) {
      original_top = page_y_offset() + rect.top;
    }
    if (!original_top) {
      original_top = $(sidebar).offset() ? $(sidebar).offset().top : 0;
    }
    remember_measure_state();
  }

  function apply_position() {
    var scroll_top;
    var desired_top;
    var max_top;
    var footer_top;
    var sidebar_height;
    var max_height;
    var distance_to_footer;
    var offset;

    if (!is_desktop()) {
      clear_follow();
      return;
    }

    if (!original_top || measure_state_changed()) {
      original_top = 0;
      measure_original();
      if (!original_top) return;
    }

    scroll_top = page_y_offset();
    offset = get_header_offset();
    footer_top = get_footer_top();
    sidebar_height = $(sidebar).outerHeight(true) || sidebox.outerHeight(true) || 1;

    desired_top = scroll_top + offset - original_top;
    if (desired_top < 0) desired_top = 0;

    max_top = footer_top - original_top - sidebar_height - 18;
    if (max_top < 0) max_top = 0;
    if (desired_top > max_top) desired_top = max_top;

    distance_to_footer = footer_top - scroll_top - offset - 18;
    max_height = viewport_height() - offset - 12;
    if (distance_to_footer > 0 && distance_to_footer < max_height) {
      max_height = distance_to_footer;
    }
    if (max_height < 220) max_height = 220;

    $(sidebar).addClass('etk-filter-following');
    set_filter_style('position', 'relative');
    set_filter_style('top', desired_top + 'px');
    set_filter_style('left', 'auto');
    set_filter_style('right', 'auto');
    set_filter_style('bottom', 'auto');
    clear_filter_style('inset');
    set_filter_style('-webkit-transform', 'none');
    set_filter_style('transform', 'none');
    set_filter_style('z-index', '80');
    set_filter_style('background', '#ffffff');
    sidebox.css({'max-height':'', 'overflow':'visible', 'overflow-y':'visible', 'overflow-x':'visible', 'padding-right':'0'});
    filter_scroll_box.css({'display':'block', 'max-height': Math.max(180, max_height - 20) + 'px', 'overflow-y':'auto', 'overflow-x':'hidden', 'padding-right':'5px'});
    sidebar.style.marginLeft = '';
  }

  function schedule_measure() {
    if (resize_timer) window.clearTimeout(resize_timer);
    resize_timer = window.setTimeout(function(){
      original_top = 0;
      measure_original();
      apply_position();
    }, 80);
  }

  window.etkUpdateFilterFloat = apply_position;
  window.etkScheduleFilterFloatMeasure = schedule_measure;

  $(window).off('scroll.etkSafeFilterFloat').on('scroll.etkSafeFilterFloat', function(){
    if (scroll_timer) return;
    scroll_timer = window.setTimeout(function(){
      scroll_timer = null;
      apply_position();
    }, 20);
  });
  $(window).off('resize.etkSafeFilterFloat').on('resize.etkSafeFilterFloat', function(){
    schedule_measure();
  });
  $(sidebar).data('etkFollowInitialized', true);

  measure_original();
  apply_position();
  window.setTimeout(apply_position, 80);
  window.setTimeout(schedule_measure, 350);
  window.setTimeout(schedule_measure, 900);
  window.setTimeout(schedule_measure, 1600);
}

function f_filter_form_submit(list_reset) {
  var load_page = 1;
  var data_obj;
  var prefetch_key;
  if (block_submit || is_spider || etk_ajax_loading) return;

  if (list_reset == true) {
    pages_loaded = 0;
    etk_search_token = '';
    etk_search_total_results = 0;
    window.etk_search_token = '';
    window.etk_search_total_results = 0;
    f_clear_results_prefetch(true);
    if (!etk_specs_locked) {
      etk_specs_loaded_token = '';
    }
    $('#id_field_filters').val(f_get_checked_filters_string());
  } else if (pages_loaded > 0) {
    if (f_use_results_prefetch()) {
      return;
    }
    prefetch_key = f_results_prefetch_key(pages_loaded, 1);
    if (etk_prefetch_loading && etk_prefetch_key == prefetch_key) {
      etk_prefetch_consume_requested = true;
      f_show_loading_more();
      return;
    }
  }

  if (($('#id_subcats').length) && ($('#id_products_filters_form input:checked[name^=products_top_categories_id]').length == 0)) {
    $('#id_subcats').show();
    $('#id_ajax_filters').hide();
    $('#id_ajax_filters_show_more').hide();
    return;
  } else {
    $('#id_subcats').hide();
  }

  if ($('#id_ajax_filters').length) {
    etk_ajax_loading = true;
    $('#id_ajax_filters_show_more').hide();
    if (pages_loaded == 0) {
      $('#id_ajax_filters').stop(true, true).html('<span> Please wait... </span> <img style="vertical-align: middle;" src="images/giphy.gif" alt="Loading" height="80" width="80">').show();
    } else {
      f_show_loading_more();
    }

    try { if (ajax_req) ajax_req.abort(); } catch (e) {}

    data_obj = f_build_results_request_data();

    ajax_req = $.ajax({
      type: 'POST',
      url: f_build_ajax_request_url(load_page),
      data: data_obj
    }).done(function(data) {
      f_handle_loaded_results_data(data, load_page);
    }).fail(function() {
      if (pages_loaded == 0) {
        $('#id_ajax_filters').html('<div class="messageStackError">Search results could not be loaded. Please refresh and try again.</div>').show();
      }
    }).always(function() {
      etk_ajax_loading = false;
      f_hide_loading_more();
      window.setTimeout(function(){ try { f_maybe_start_results_prefetch(); } catch (e) {} }, 100);
    });
  }
}

$(function() {
  f_style_filter_controls();
  f_init_filter_groups();
  $('#filters_form').show();
  try { f_init_mobile_filter_drawer(); } catch (e) {}

  $('#id_ajax_filters_show_more').click(function() {
    f_filter_form_submit(false);
    return false;
  });

  $(window).scroll(function() {
    var show_more = $('#id_ajax_filters_show_more');
    var distance;
    if (show_more.length && show_more.css('display') != 'none' && !etk_ajax_loading) {
      distance = f_results_show_more_distance();
      if (distance < etk_infinite_preload_distance) {
        f_start_results_prefetch();
      }
      if (distance < etk_infinite_load_distance) {
        show_more.css('opacity', '0.01');
        f_filter_form_submit(false);
      }
    }
    f_set_page_url('scroll');
  });

  $('#id_products_filters_form').on('change', 'input[name^="products_filters_id"]', function() {
    f_filter_form_submit(true);
  });

  $('#id_products_filters_form').on('change', 'input[name^="products_top_categories_id"]', function() {
    var new_id = '#' + $(this).attr('id').replace('id_products', 'id_sub_products');
    if ($(this).attr('checked') == 'checked' || $(this).prop('checked')) {
      $(new_id).show();
    } else {
      $(new_id).hide();
      $(new_id + ' input[name^="products_filters_id"]').attr('checked', false);
    }
    f_filter_form_submit(true);
  });

  $('#id_products_filters_form').on('change', 'input[id^="id_products_filters_categories_id_"]', function() {
    var new_id = '#' + $(this).attr('id').replace('id_products', 'id_sub_products');
    if ($(this).attr('checked') == 'checked' || $(this).prop('checked')) {
      $(this).parent().css('background-position','5px 0px');
      $(new_id).show();
    } else {
      $(this).parent().css('background-position','5px -18px');
      $(new_id + ' input[name^="products_filters_id"]').attr('checked', false);
      $(new_id).hide();
    }
  });

  $('input[name="shipping_filters"]').change(function() {
    if(!$(this).prop('checked')) {
      $('#shipping_filters_div').hide();
    } else {
      $('#shipping_filters_div').show();
    }
    f_filter_form_submit(true);
  });

  $('input[name^="shipping_filters_id"]').change(function() {
    f_filter_form_submit(true);
  });

  $(document).on('mousedown click', '#id_ajax_filters a[href]', function() {
    var href = $(this).attr('href') || '';
    if (href.indexOf('action=buy_now') == -1) {
      f_save_results_cache('link');
    }
  });

  if ('onpagehide' in window) {
    $(window).on('pagehide', function() {
      f_save_results_cache('pagehide');
    });
  } else {
    $(window).on('beforeunload', function() {
      f_save_results_cache('beforeunload');
    });
  }

  if (!f_restore_results_cache()) {
    f_filter_form_submit(true);
  }
  function etk_rebind_filter_float_after_sticky_header() {
    try {
      f_init_safe_filter_float();
    } catch (e) {}
  }
  window.setTimeout(etk_rebind_filter_float_after_sticky_header, 250);
  window.setTimeout(etk_rebind_filter_float_after_sticky_header, 1000);
  window.setTimeout(etk_rebind_filter_float_after_sticky_header, 1800);
});