/* 
 * Date Format 1.2.3 
 * (c) 2007-2009 Steven Levithan <stevenlevithan.com> 
 * MIT license 
 * 
 * Includes enhancements by Scott Trenda <scott.trenda.net> 
 * and Kris Kowal <cixar.com/~kris.kowal/> 
 * 
 * Accepts a date, a mask, or a date and a mask. 
 * Returns a formatted version of the given date. 
 * The date defaults to the current date/time. 
 * The mask defaults to dateFormat.masks.default. 
 */ 
 
var dateFormat = function () { 
    var token = /d{1,4}|m{1,4}|yy(?:yy)?|([HhMsTt])\1?|[LloSZ]|"[^"]*"|'[^']*'/g, 
        timezone = /\b(?:[PMCEA][SDP]T|(?:Pacific|Mountain|Central|Eastern|Atlantic) (?:Standard|Daylight|Prevailing) Time|(?:GMT|UTC)(?:[-+]\d{4})?)\b/g, 
        timezoneClip = /[^-+\dA-Z]/g, 
        pad = function (val, len) { 
            val = String(val); 
            len = len || 2; 
            while (val.length < len) val = "0" + val; 
            return val; 
        }; 
 
    // Regexes and supporting functions are cached through closure 
    return function (date, mask, utc) { 
        var dF = dateFormat; 
 
        // You can't provide utc if you skip other args (use the "UTC:" mask prefix) 
        if (arguments.length == 1 && Object.prototype.toString.call(date) == "[object String]" && !/\d/.test(date)) { 
            mask = date; 
            date = undefined; 
        } 
 
        // Passing date through Date applies Date.parse, if necessary 
        date = date ? new Date(date) : new Date; 
        if (isNaN(date)) throw SyntaxError("invalid date"); 
 
        mask = String(dF.masks[mask] || mask || dF.masks["default"]); 
 
        // Allow setting the utc argument via the mask 
        if (mask.slice(0, 4) == "UTC:") { 
            mask = mask.slice(4); 
            utc = true; 
        } 
 
        var _ = utc ? "getUTC" : "get", 
            d = date[_ + "Date"](), 
            D = date[_ + "Day"](), 
            m = date[_ + "Month"](), 
            y = date[_ + "FullYear"](), 
            H = date[_ + "Hours"](), 
            M = date[_ + "Minutes"](), 
            s = date[_ + "Seconds"](), 
            L = date[_ + "Milliseconds"](), 
            o = utc ? 0 : date.getTimezoneOffset(), 
            flags = { 
                d:    d, 
                dd:   pad(d), 
                ddd:  dF.i18n.dayNames[D], 
                dddd: dF.i18n.dayNames[D + 7], 
                m:    m + 1, 
                mm:   pad(m + 1), 
                mmm:  dF.i18n.monthNames[m], 
                mmmm: dF.i18n.monthNames[m + 12], 
                yy:   String(y).slice(2), 
                yyyy: y, 
                h:    H % 12 || 12, 
                hh:   pad(H % 12 || 12), 
                H:    H, 
                HH:   pad(H), 
                M:    M, 
                MM:   pad(M), 
                s:    s, 
                ss:   pad(s), 
                l:    pad(L, 3), 
                L:    pad(L > 99 ? Math.round(L / 10) : L), 
                t:    H < 12 ? "a"  : "p", 
                tt:   H < 12 ? "am" : "pm", 
                T:    H < 12 ? "A"  : "P", 
                TT:   H < 12 ? "AM" : "PM", 
                Z:    utc ? "UTC" : (String(date).match(timezone) || [""]).pop().replace(timezoneClip, ""), 
                o:    (o > 0 ? "-" : "+") + pad(Math.floor(Math.abs(o) / 60) * 100 + Math.abs(o) % 60, 4), 
                S:    ["th", "st", "nd", "rd"][d % 10 > 3 ? 0 : (d % 100 - d % 10 != 10) * d % 10] 
            }; 
 
        return mask.replace(token, function ($0) { 
            return $0 in flags ? flags[$0] : $0.slice(1, $0.length - 1); 
        }); 
    }; 
}(); 
 
// Some common format strings 
dateFormat.masks = { 
    "default":      "ddd mmm dd yyyy HH:MM:ss", 
    shortDate:      "m/d/yy", 
    mediumDate:     "mmm d, yyyy", 
    longDate:       "mmmm d, yyyy", 
    fullDate:       "dddd, mmmm d, yyyy", 
    shortTime:      "h:MM TT", 
    mediumTime:     "h:MM:ss TT", 
    longTime:       "h:MM:ss TT Z", 
    isoDate:        "yyyy-mm-dd", 
    isoTime:        "HH:MM:ss", 
    isoDateTime:    "yyyy-mm-dd'T'HH:MM:ss", 
    isoUtcDateTime: "UTC:yyyy-mm-dd'T'HH:MM:ss'Z'" 
}; 
 
// Internationalization strings 
dateFormat.i18n = { 
    dayNames: [ 
        "Sun", "Mon", "Tue", "Wed", "Thu", "Fri", "Sat", 
        "Sunday", "Monday", "Tuesday", "Wednesday", "Thursday", "Friday", "Saturday" 
    ], 
    monthNames: [ 
        "Jan", "Feb", "Mar", "Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec", 
        "January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December" 
    ] 
}; 
 
// For convenience... 
Date.prototype.format = function (mask, utc) { 
    return dateFormat(this, mask, utc); 
}; 
