[ОлегА]

var date = new Date();
var mSec = 5*1000;

function show_fancybox(){
  if( ! $.cookie('fancybox_show')  ){
    // запускаем fancybox
   
   date.setTime(date.getTime() +mSec);
   
   $.cookie('fancybox_show', date.getTime(),{ path: "/personal/carts/content.html", expires: date});
  }
}

$(function(){

   show_fancybox()

   setInterval(show_fancybox, mSec)

})