/*jslint browser: true */ /*global jQuery: true */

/**
 * jQuery Cookie plugin
 *
 * Copyright (c) 2010 Klaus Hartl (stilbuero.de)
 * Dual licensed under the MIT and GPL licenses:
 * http://www.opensource.org/licenses/mit-license.php
 * http://www.gnu.org/licenses/gpl.html
 *
 */

// TODO JsDoc

/**
 * Create a cookie with the given key and value and other optional parameters.
 *
 * @example $.cookie('the_cookie', 'the_value');
 * @desc Set the value of a cookie.
 * @example $.cookie('the_cookie', 'the_value', { expires: 7, path: '/', domain: 'jquery.com', secure: true });
 * @desc Create a cookie with all available options.
 * @example $.cookie('the_cookie', 'the_value');
 * @desc Create a session cookie.
 * @example $.cookie('the_cookie', null);
 * @desc Delete a cookie by passing null as value. Keep in mind that you have to use the same path and domain
 *       used when the cookie was set.
 *
 * @param String key The key of the cookie.
 * @param String value The value of the cookie.
 * @param Object options An object literal containing key/value pairs to provide optional cookie attributes.
 * @option Number|Date expires Either an integer specifying the expiration date from now on in days or a Date object.
 *                             If a negative value is specified (e.g. a date in the past), the cookie will be deleted.
 *                             If set to null or omitted, the cookie will be a session cookie and will not be retained
 *                             when the the browser exits.
 * @option String path The value of the path atribute of the cookie (default: path of page that created the cookie).
 * @option String domain The value of the domain attribute of the cookie (default: domain of page that created the cookie).
 * @option Boolean secure If true, the secure attribute of the cookie will be set and the cookie transmission will
 *                        require a secure protocol (like HTTPS).
 * @type undefined
 *
 * @name $.cookie
 * @cat Plugins/Cookie
 * @author Klaus Hartl/klaus.hartl@stilbuero.de
 */

/**
 * Get the value of a cookie with the given key.
 *
 * @example $.cookie('the_cookie');
 * @desc Get the value of a cookie.
 *
 * @param String key The key of the cookie.
 * @return The value of the cookie.
 * @type String
 *
 * @name $.cookie
 * @cat Plugins/Cookie
 * @author Klaus Hartl/klaus.hartl@stilbuero.de
 */
jQuery.cookie = function (key, value, options) {
    
    // key and at least value given, set cookie...
    if (arguments.length > 1 && String(value) !== "[object Object]") {
        options = jQuery.extend({}, options);

        if (value === null || value === undefined) {
            options.expires = -1;
        }

        if (typeof options.expires === 'number') {
            var days = options.expires, t = options.expires = new Date();
            t.setDate(t.getDate() + days);
        }
        
        value = String(value);
        
        return (document.cookie = [
            encodeURIComponent(key), '=',
            options.raw ? value : encodeURIComponent(value),
            options.expires ? '; expires=' + options.expires.toUTCString() : '', // use expires attribute, max-age is not supported by IE
            options.path ? '; path=' + options.path : '',
            options.domain ? '; domain=' + options.domain : '',
            options.secure ? '; secure' : ''
        ].join(''));
    }

    // key and possibly options given, get cookie...
    options = value || {};
    var result, decode = options.raw ? function (s) { return s; } : decodeURIComponent;
    return (result = new RegExp('(?:^|; )' + encodeURIComponent(key) + '=([^;]*)').exec(document.cookie)) ? decode(result[1]) : null;
};



//check age
function displayAge(){
	 var one_day=1000*60*60*24;
var one_month=1000*60*60*24*30;
var one_year=1000*60*60*24*30*12;
var ageErrorMsg ='You are not old enough to purchase wine on this site';
var unit = "years"
var yr, mon, day

day=document.getElementById("dob-day").value;

mon=document.getElementById("dob-month").value;

yr=document.getElementById("dob-year").value;

today=new Date()
var tomorrow = new Date();
tomorrow.setDate(today.getDate() + 1);//get tomorrow's date
var pastdate=new Date(yr, mon-1, day)

var countunit= unit
var decimals=0
var rounding="rounddown"

finalunit=(countunit=="days")? one_day : (countunit=="months")? one_month : one_year
decimals=(decimals<=0)? 1 : decimals*10

if (unit!="years"){
if (rounding=="rounddown")
document.write(Math.floor((tomorrow.getTime()-pastdate.getTime())/(finalunit)*decimals)/decimals+" "+countunit)
else
document.write(Math.ceil((tomorrow.getTime()-pastdate.getTime())/(finalunit)*decimals)/decimals+" "+countunit)
}
else{
yearspast=tomorrow.getFullYear()-yr-1
tail=(tomorrow.getMonth()>mon-1 || tomorrow.getMonth()==mon-1 && tomorrow.getDate()>=day)? 1 : 0
pastdate.setFullYear(tomorrow.getFullYear())
pastdate2=new Date(tomorrow.getFullYear()-1, mon-1, day)
tail=(tail==1)? tail+Math.floor((tomorrow.getTime()-pastdate.getTime())/(finalunit)*decimals)/decimals : Math.floor((tomorrow.getTime()-pastdate2.getTime())/(finalunit)*decimals)/decimals
 var permittedAge = yearspast+tail;
 
 if(permittedAge < 21){
	alert( ageErrorMsg)
	jQuery.cookie('age', 'underage', {expires: 30, path: '/'});
 }else{
	jQuery.cookie('age', 'valid', {expires: 30, path: '/'});
	window.location = "home.html";
 }
}
}