reduced functionality of: https://gist.github.com/755139

application.js

$(function() {
  $('#products_search input').keyup(function() {
      $.bbq.pushState($('#products_search').serialize() + '&page=1');
    }, 250);
  });
  $('#products th a, #products .pagination a').live('click', function(e) {
    e.preventDefault();
    $.bbq.pushState($.param.querystring(this.href));
  });
  $(window).bind('hashchange', function() {
    $.getScript($.param.querystring(document.location.href, $.param.fragment()));
  });
  $(window).trigger('hashchange');
});
// TODO: changing the hash by hand does not work (jumps to last history)