function do_search(submit) {

  if ($('#search_text').val() == "" || $('#search_text').val() == "." || $('#search_text').val() == "Search..." || $('#search_text').val() == "Поиск..." || $('#search_text').val() == "Пошук...") {
    $('#search_text').focus();
    alert('Please enter search text');
  } else {
    document.location = $('#search_form').attr('action') + $('#search_text').val().replace(/(\s+$)|(^\s+)/g, "").replace(/[^A-Za-z0-9 +-]/g, "").replace(/[ ]/g, "_").toLowerCase() + ".html";
  }

}

$(function() {
  $('#search_text').coolinput();
  });