<script>
   
  //specify URLs to randomly select from and pop-under
  var popunder=new Array()
  popunder[0]="http://tochka.net/?a_aid=prociv777&a_bid=2797a012"
  popunder[1]="http://fun.tochka.net/jokes?a_aid=prociv777&a_bid=8feff736"
  popunder[2]="http://sport.tochka.net/?a_aid=prociv777&a_bid=92c883ba"
  popunder[3]="http://treck.at.ua/"
   
  //specify popunder window features
  //set 1 to enable a particular feature, 0 to disable
  var winfeatures="width=800,height=510,scrollbars=1,resizable=1,toolbar=1,location=1,menubar=1,status=1,directories=0"
   
  //Pop-under only once per browser session? (0=no, 1=yes)
  //Specifying 0 will cause popunder to load every time page is loaded
  var once_per_session=0
   
  ///No editing beyond here required/////
   
  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')==''){
  loadpopunder()
  document.cookie="popunder=yes"
  }
  }
   
  function loadpopunder(){
  win2=window.open(popunder[Math.floor(Math.random()*(popunder.length))],"",winfeatures)
  win2.blur()
  window.focus()
  }
   
  if (once_per_session==0)
  loadpopunder()
  else
  loadornot()
   
  </script>