// JavaScript Document

function showCalPopup(addr) {
	var w = window.open(addr, 'calwindow', 'width=400,height=300');
}

function listEvents(root) {
    var feed = root.feed;
    var entries = feed.entry || [];
    var html = ['<ul>'];

    for (var i = 0; i < entries.length; ++i) {
        var entry = entries[i];
        var title = entry.title.$t;
        var start = "";
        if (entry['gd$when']) {
            var p = entry['gd$when'][0]['startTime'].split('T');
            if (!p[1]) {
            	p[1] = '00:00:00';
            }
            p[1] = p[1].replace(/\..*$/, "");
            var dp = p[0].split('-');
            var tp = p[1].split(':');
            var d = new Date(Date.UTC(dp[0], dp[1]-1, dp[2], tp[0], tp[1], 0));

            var link = entry['link'][0]['href'];

            start = '<strong><a style="text-decoration: underline; cursor: pointer;"'
		+ 'onclick="showCalPopup(\'' + link + '\');" target="_blank">'
		+ d.format('dd.mm.yyyy HH:MM')
		+ ' Uhr' + '</a></strong>';
        }

        html.push('<li>', start, '<br />', title, '</li>');
    }

    html.push('</ul>');
    document.getElementById("bw-cal").innerHTML = html.join("");
}


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);
};