var popunder = function() {

  var URL = null;
  var P_TIMEOUT = 1;
  var REFRESH = true;

  var popUnder = function()
  {
    if (URL != null)
    {
      var loc = location.search;
      if (loc.indexOf('nopopunder') == -1)
      {
        coock = getCookie('epop');
        if (coock == false)
        {
          if (REFRESH)
          {
            window.open(URL);
            REFRESH = false;
            if (P_TIMEOUT > 0) { setCookie('epop','true',P_TIMEOUT); }
          }
        }
      }
    }
    return true;
  }
  
  return {
    init: function(u,day) { 
      URL = u;
      P_TIMEOUT = day;
      window.onclick = popUnder;
      document.body.onclick = popUnder;
    }
  }
     
} ();

//popunder.init('http://google.com.ua/?join&rid=17',1);