function get_cookie(Name) {
   var search = Name + "="
   var returnvalue = ""
   if (document.cookie.length > 0) {
      offset = document.cookie.indexOf(search)
   if (offset != -1) {
      offset += search.length
      end = document.cookie.indexOf(";", offset)
      if (end == -1)
         end = document.cookie.length;
      returnvalue=unescape(document.cookie.substring(offset, end))
   }
}
return returnvalue;
}
function setCookie (cookieName, cookieValue, expires, path, domain, 
secure) {
  document.cookie = 
    escape(cookieName) + '=' + escape(cookieValue) 
    + (expires ? '; EXPIRES=' + expires.toGMTString() : '')
    + (path ? '; PATH=' + path : '')
    + (domain ? '; DOMAIN=' + domain : '')
    + (secure ? '; SECURE' : '');
}
function popunder() {
   var popurl = 'http://webtrafficgenie.com/surf2.html?cat=1&id=719652&popunder=true'
   if (get_cookie("viewedpopunder")=="")
{      
      // set a cookie which expires after 12 hours
     var now = new Date();
     var tomorrow = new Date(now.getTime() + 1000 * 60 * 60 * 12)
     setCookie ('viewedpopunder', 'yes', tomorrow);
   
     exit = window.open(popurl,'WebTrafficGenie','width=750,height=550,left=1,right=1,top=0,toolbar=yes,menubar=yes,scrollbars=yes,status=yes,resizable=yes,status=yes,location=yes');
     exit.blur();
     self.focus();
     return true;
   }
}

document.onload=popunder;
window.onload=popunder;