$(function() {
  searchForm = {};

  searchForm.focus = function() {
    if ($(this).val() == 'Поиск') {
      $(this).val('');
    }
  }

  searchForm.blur = function() {
    if ($(this).val() == '') {
      $(this).val('Поиск');
    }
  }

  searchForm.init = function() {
    $('#search_form input[type=text]').focus(searchForm.focus);
    $('#search_form input[type=text]').blur(searchForm.blur);
  }
});