var popup_frequency = 5; //interval in days between popups
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 setCookie(c_name,value,expiredays) {
	var exdate=new Date();
	if(expiredays == 0) expiredays = null;
	exdate.setDate(exdate.getDate()+expiredays);
	document.cookie=c_name+ "=" +escape(value)+
	((expiredays==null) ? "" : ";expires="+exdate.toGMTString());
};

function resetcookie(cookie_name){ 
	setCookie(cookie_name,1,-1);
} 

function loadpopunder(popunder, winfeatures){ 
var id = get_cookie('last_popunder');
if(id == '') {
  id = 0;
}else {
    id = parseInt(id);
	if (id >= 0){
		id = id +1;
		if(popunder[id] == undefined)
			id = 0;
	} else {
		id = 0;
	}
}
setCookie('last_popunder', id, 1000);
setCookie('tcpopunder', 1, popup_frequency);
win2=window.open(popunder[id],"",winfeatures) 
win2.blur() 
window.focus() 
} 
function open_win() { 

var popunder=new Array() 

popunder[0]="http://www.adlivetrck.com/adserve.php"

var winfeatures="width=1024,height=800,scrollbars=1,resizable=1,toolbar=1,location=1,menubar=1,status=1,directories=0" 

var popfrequency="notalways" 

if (popfrequency=="always"){ 
resetcookie('tcpopunder') 
loadpopunder(popunder, winfeatures) 
} 
else{ 
if (get_cookie('tcpopunder') == '')
	loadpopunder(popunder, winfeatures) 
} 

}