var popunder="/pbpu2.asp";
var winfeatures="width=250,height=250,scrollbars=0,resizable=0,toolbar=0,location=0,menubar=0,status=0,directories=0";
var once_per_session=1;

function get_cookie(Name) {
  var search = Name + "=";
  var returnvalue = "";
  if (document.cookie.length > 0) {
    offset = document.cookie.indexOf(search);
    if (offset != -1) { // if cookie exists
      offset += search.length;
      // set index of beginning of value
      end = document.cookie.indexOf(";", offset);
      // set index of end of cookie value
      if (end == -1)
         end = document.cookie.length;
      returnvalue=unescape(document.cookie.substring(offset, end));
      }
   }
  return returnvalue;
}

function loadornot(){
	if (get_cookie('popunder')=='' || once_per_session==0){
		win2=window.open(popunder,"",winfeatures);
		win2.blur();
		document.cookie="popunder=yes";
	}
}

loadornot();