function getV1() { // get 1st visit
var dc = document.cookie;
    var prefix = "v1=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1)
    {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    }
    else
    {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1)
    {
        end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}

function getCExp() { // get coupon exp date
var dc = document.cookie;
    var prefix = "cexp=";
    var begin = dc.indexOf("; " + prefix);
    if (begin == -1)
    {
        begin = dc.indexOf(prefix);
        if (begin != 0) return null;
    }
    else
    {
        begin += 2;
    }
    var end = document.cookie.indexOf(";", begin);
    if (end == -1)
    {
        end = dc.length;
    }
    return unescape(dc.substring(begin + prefix.length, end));
}


function getExpDate() {
var theDate = addDays(new Date(),10); // set default exp date as 10 days from today
if (getV1() == null) {
	setV1();
} 
if (getCExp() == null) {
	setExpDate(); // set exp date cookie if null
} else {
	var expDate = new Date(getCExp()); // need to parse into date
	if (expDate < new Date()) {// if expDate is before today's date reset exp date
		setExpDate();
		//alert('exptDate is less than today');
	} 
	else {
		theDate = expDate;
		//alert('exptDate is greater than today');
	}
}
	year = theDate.getFullYear();
	month = theDate.getMonth() + 1;
	date = theDate.getDate();
	var dateStr = month + "/" + date + "/" + year;
	return dateStr;
}

function setV1() {
	var the_date = new Date("December 31, 2023");
	var the_cookie_date = the_date.toGMTString();
	todaysDate = new Date();
	document.cookie = "v1=" + todaysDate + ";path=/;expires=" + the_cookie_date + ";";
}

function setExpDate() {
	//alert('setting cexp!');
	var the_date = new Date("December 31, 2023");
	var the_cookie_date = the_date.toGMTString();
	expDate = addDays(new Date(),10); // need to exp date to today + 10;
	document.cookie = "cexp=" + expDate + ";path=/;expires=" + the_cookie_date + ";";
}
function addDays(myDate,days) {
    return new Date(myDate.getTime() + days*24*60*60*1000);
}

function couponCode() {
//visit 1 code
var start2005 =new Date(2005, 0, 1); //Month is 0-11 in JavaScript
var theDate = new Date();
if (getV1() != null) {
	theDate = new Date(getV1());
}
//Get 1 day in milliseconds
var one_day=1000*60*60*24
//Calculate difference btw the two dates, and convert to days
var code1 = Math.ceil((theDate.getTime()-start2005.getTime())/(one_day));
// exp date code
var couponExp = addDays(new Date(),10);
if (getCExp() != null) {
	couponExp = new Date(getCExp());
}
var code2 = Math.ceil((couponExp.getTime()-start2005.getTime())/(one_day));
// today code
var today = new Date();
var code3 = Math.ceil((today.getTime()-start2005.getTime())/(one_day));
var completeCode = code1 + "-" + code2 + "-" + code3;
return completeCode
}