var popurls=new Array()
popurls[0]="sound.php"

function openpopup(popurl){
	var winpops=window.open(popurl,'', 'toolbar=0,scrollbars=0,location=0,statusbar=0,menubar=0,resizable=0,width=10,height=10');
}

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
      end = document.cookie.indexOf(";", offset);
      if (end == -1)
         end = document.cookie.length;
      returnvalue=unescape(document.cookie.substring(offset, end))
      }
   }
  return returnvalue;
}

function playSound(){
	if (get_cookie('jkpopup')==''){
		openpopup(popurls[Math.floor(Math.random()*(popurls.length))])
		document.cookie="jkpopup=yes"
	}
}