function openpopup(){
window.open("http://www.xoomaworldwide.com/success","mypopupwin","width=10,height=10,top=7000,left=7000,scrollbars=no,location=no,directories=no,status=no,menubar=no,toolbar=no,resizable=no")
}

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 loadpopup(){
if (get_cookie('mypopupwin')==''){
openpopup()
document.cookie="mypopupwin=yes"
}
}