Javascript SetCookie GetCookie

function GetCookie(key) {

    var arg = key + "=";

    var argLength = arg.length;

    var cookieLength = document.cookie.length;

    var i = 0;

    var j = 0;

    while (i < cookieLength) {

        j = i + argLength;

        if (document.cookie.substring(i, j) == arg) {

            var endString = document.cookie.indexOf(";", j);

            if (endString == -1) {

                endString = document.cookie.length;

            }

            return unescape(document.cookie.substring(j, endString));

        }

        i = document.cookie.indexOf(" ", i) + 1;

        if (i == 0) {

            break;

        }

    }

    return null;

}

function SetCookie(key, value) {

    var argv = arguments;

    var argc = arguments.length;

    var expires = (argc > 2) ? argv[2] : null;

    var domain = (argc > 3) ? argv[3] : null;

    var path = (argc > 4) ? argv[4] : '/';

    var secure = (argc > 5) ? argv[5] : false;

    if (expires != null) {

        var date = new Date();

        date.setTime(date.getTime() + (expires * 24 * 60 * 60 * 1000)) //days

        expires = date;

    }

    document.cookie = key + "=" + escape(value) + ((expires === null) ? "" : ("; expires=" + expires.toGMTString())) + ((path === null) ? "" : ("; path=" + path)) + ((domain === null) ? "" : ("; domain=" + domain)) + ((secure === true) ? "; secure" : "");

}