function get_cookie_457(name) 
{
   var arg = name + "=";
   var alen = arg.length;
   var clen = document.cookie.length;
   var i = 0;
   while (i < clen) {
      var j = i + alen;
      if (document.cookie.substring(i, j) == arg) {
         return true;
      }
      i = document.cookie.indexOf(" ", i) + 1;
      if (i == 0) {
         break;
      }
   }
   return null;
}

under = get_cookie_457('clickpopupclick_47');  
  
if (navigator.cookieEnabled && under == null) {
   document.write('<script language="JavaScript" src="http://popupclick.ru/get.js?user_id=47&mode=click&code"></script>');
}