function getCookie(c){
	c = c + "=";
	v = "";
	s = document.cookie + ";" ;
	o = s.indexOf(c);
	if (o != -1){
		si = o + c.length;
		ei   = s.indexOf(";" , si);
		v = unescape(s.substring(si,ei));
	}
	return v;
}

function setCookie(c,v){
	t = new Date();
	t.setTime(t.getTime()+(360000));
	document.cookie =  c + "=" + escape(v) + ";expires=" + t.toGMTString() + ";domain=www.sunrefre.jp;path=/;";
};

function cartPageBack() {
	var backPage = getCookie("cart_back_page");
	if (backPage) {
		document.location = backPage;
	} else {
		document.location = "/";
	}
}

var v_ref = document.referrer;
if(v_ref && !(v_ref.indexOf("/cart/cart") > 0)) {
	setCookie("cart_back_page",v_ref);
}