[ef1]

в принципе решение нарисовалось без ajax

<script>
var str_href = {
    sort_byDir:"asc",
    sort_byName: "Наименование"
  }

  $('#sort_hover_byDir').on('beforehide', function () {
    str_href.sort_byDir = this.getElementsByClassName('uk-active')[0].textContent;

    document.getElementById('sort_click_byDir').getElementsByClassName('uk-active')[0].getElementsByTagName('a')[0].setAttribute("href","?byDir=" + str_href.sort_byDir + "&byName=" + str_href.sort_byName);
  });

  $('#sort_hover_byName').on('beforehide', function () {
    str_href.sort_byName = this.getElementsByClassName('uk-active')[0].textContent;

    document.getElementById('sort_click_byName').getElementsByClassName('uk-active')[0].getElementsByTagName('a')[0].setAttribute("href","?byDir=" + str_href.sort_byDir + "&byName=" + str_href.sort_byName);
  });
</script>

или можно проще?