$.fn.banners = function()
{
  var reload = function(id, f)
  {
    var $o = $('#' + id);
    var l = top.location;
    f = f || id;

    if ($o.length)
      $o
        .find('iframe')
        .attr('src', l.protocol + '\/\/' + l.host + '/' + f + '.php?pgr=1&rnd=' + (new Date()).getTime());
  };

  reload('banner1', 'bn-top');
  reload('bn-direct-top');
  reload('bn-left-top');
  reload('bn-direct-bottom');
  reload('bn-left-bottom');
};