function promo() {
	if(promo.readCookie() != "true") {
		var a = document.getElementsByTagName('a');
		for(var i=0; i<a.length; i++) {
			a[i].onclick = function() {
				promo.openPromo();
				promo.setCookie();
			}
		}
	}
}
promo.openPromo = function() {
	var promoWindow = window.open('http://www.betthe.net/__promo/melbournecup_720x300.html','melbournecuppromo','width=720,height=300');
	window.focus();
}
promo.setCookie = function() {
	document.cookie = "promo=true;";
}
promo.readCookie = function() {
	var theCookie= document.cookie;
	var ind = theCookie.indexOf("promo");
	if (ind == -1) {
		return "false"; 
	}
	var ind1 = theCookie.indexOf(';',ind);
	if (ind1 == -1) {
		ind1 = theCookie.length;
	}
	return unescape(theCookie.substring(ind+"promo".length+1,ind1));
}