Järjestelmäviesti:Common.js

function firstDayOfWeek (year, week) {

    // Jan 1 of 'year'
    var d = new Date(year, 0, 1),
        offset = d.getTimezoneOffset();

    // ISO: week 1 is the one with the year's first Thursday 
    // so nearest Thursday: current date + 4 - current day number
    // Sunday is converted from 0 to 7
    d.setDate(d.getDate() + 4 - (d.getDay() || 7));

    // 7 days * (week - overlapping first week)
    d.setTime(d.getTime() + 7 * 24 * 60 * 60 * 1000 
        * (week + (year == d.getFullYear() ? -1 : 0 )));

    // daylight savings fix
    d.setTime(d.getTime() 
        + (d.getTimezoneOffset() - offset) * 60 * 1000);

    // back to Monday (from Thursday)
    d.setDate(d.getDate() - 3);

    return d;
}

function toDateFromSecsSince1970(s) {

	var t = new Date(1970, 0, 1);
	t.setMinutes(-t.getTimezoneOffset());
	t.setSeconds(s);
	return t;
}

Date.prototype.getDaysSinceZero = function () {
	var aggregateMonths = [0, // January
        	31, // February
                31 + 28, // March
                31 + 28 + 31, // April
                31 + 28 + 31 + 30, // May
                31 + 28 + 31 + 30 + 31, // June
                31 + 28 + 31 + 30 + 31 + 30, // July
                31 + 28 + 31 + 30 + 31 + 30 + 31, // August
                31 + 28 + 31 + 30 + 31 + 30 + 31 + 31, // September
                31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30, // October
                31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31, // November
                31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30, // December
	];
	return (this.getFullYear()*365.25 + aggregateMonths[this.getMonth()] + this.getDate());
}

Date.prototype.inRelationToToday = function(lang) {
	var today = new Date();
	var days = Math.round(today.getDaysSinceZero() - this.getDaysSinceZero());
	if (days == 0) { 
		return labels( 'today', lang);
	} else if (days == 1) {
		return labels( 'yesterday', lang);
	} else if (days < 11) {
		return days + ' ' + labels( 'daysAgo', lang);
	} else {
		if (lang=='fi') {
			return this.getDate() + '.' + (this.getMonth()+1) + '.' + this.getFullYear();
		} else {
			return this.toLocaleDateString();
		}
	}
        function labels(id, lang) {
		var labs = {
			fi: { today: 'Tänään', yesterday: 'Eilen', daysAgo: 'päivää sitten' },
			sv: { today: 'Idag', yesterday: 'Igår', daysAgo: 'dagar sedan' },
			en: { today: 'Today', yesterday: 'Yesterday', daysAgo: 'days ago' }
		};
		lang = lang && (lang in labs) ? lang : 'fi';
		return labs[lang][id];        
        }
};

Date.prototype.getWeekNumber = function(){
    var d = new Date(+this);
    d.setHours(0,0,0);
    d.setDate(d.getDate()+4-(d.getDay()||7));
    return Math.ceil((((d-new Date(d.getFullYear(),0,1))/8.64e7)+1)/7);
};

Date.prototype.yyyymmdd = function() {
	var yyyy = this.getFullYear().toString();
	var mm = (this.getMonth()+1).toString(); // getMonth() is zero-based
	var dd  = this.getDate().toString();

        return yyyy + '-' + (mm[1]?mm:"0"+mm[0]) + '-' + (dd[1]?dd:"0"+dd[0]);
};

			Date.prototype.getDayOfYear = function () {
    			var aggregateMonths = [0, // January
                	31, // February
                    31 + 28, // March
                    31 + 28 + 31, // April
                    31 + 28 + 31 + 30, // May
                    31 + 28 + 31 + 30 + 31, // June
                    31 + 28 + 31 + 30 + 31 + 30, // July
                    31 + 28 + 31 + 30 + 31 + 30 + 31, // August
                    31 + 28 + 31 + 30 + 31 + 30 + 31 + 31, // September
                    31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30, // October
                    31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31, // November
                    31 + 28 + 31 + 30 + 31 + 30 + 31 + 31 + 30 + 31 + 30, // December
                ];

			    return (aggregateMonths[this.getMonth()] + this.getDate());
			}


			Date.prototype.getMonthName = function(lang) {
			    lang = lang && (lang in Date.locale) ? lang : 'en';
			    return Date.locale[lang].month_names[this.getMonth()];
			};

			Date.prototype.getMonthNameShort = function(lang) {
			    lang = lang && (lang in Date.locale) ? lang : 'en';
			    return Date.locale[lang].month_names_short[this.getMonth()];
			};

			Date.locale = {
			    fi: {
			       month_names: ['Tammikuu', 'Helmikuu', 'Maaliskuu', 'Huhtikuu', 'Toukokuu', 'Kesäkuu', 'Heinäkuu', 'Elokuu', 'Syyskuu', 'Lokakuu', 'Marraskuu', 'Joulukuu'],
			       month_names_short: ['Tammi', 'Helmi', 'Maalis', 'Huhti', 'Touko', 'Kesä', 'Heinä', 'Elo', 'Syys', 'Loka', 'Marras', 'Joulu']
			    },
			    sv: {
			       month_names: ['Januari', 'Februari', 'Mars', 'April', 'Maj', 'Juni', 'Juli', 'Augusti', 'September', 'Oktober', 'November', 'December'],
			       month_names_short: ['Jan', 'Feb', 'Mar', 'Apr', 'Maj', 'Jun', 'Jul', 'Aug', 'Sep', 'Okt', 'Nov', 'Dec']
			    },
			    en: {
			       month_names: ['January', 'February', 'March', 'April', 'May', 'June', 'July', 'August', 'September', 'October', 'November', 'December'],
			       month_names_short: ['Jan', 'Feb', 'Mar', 'Apr', 'May', 'Jun', 'Jul', 'Aug', 'Sep', 'Oct', 'Nov', 'Dec']
			    }
			};

function hslToRgb(h, s, l){
	/**
	 * Converts an HSL color value to RGB. Conversion formula
	 * adapted from //en.wikipedia.org/wiki/HSL_color_space.
	 * Assumes h, s, and l are contained in the set [0, 1] and
	 * returns r, g, and b in the set [0, 255].
	 *
	 * @param   Number  h       The hue
	 * @param   Number  s       The saturation
	 * @param   Number  l       The lightness
	 * @return  Array           The RGB representation
	*/
	    var r, g, b;

	    if(s == 0){
		r = g = b = l; // achromatic
	    }else{
		function hue2rgb(p, q, t){
		    if(t < 0) t += 1;
		    if(t > 1) t -= 1;
		    if(t < 1/6) return p + (q - p) * 6 * t;
		    if(t < 1/2) return q;
		    if(t < 2/3) return p + (q - p) * (2/3 - t) * 6;
		    return p;
		}

		var q = l < 0.5 ? l * (1 + s) : l + s - l * s;
		var p = 2 * l - q;
		r = hue2rgb(p, q, h + 1/3);
		g = hue2rgb(p, q, h);
		b = hue2rgb(p, q, h - 1/3);
	    }

	    return [Math.round(r * 255), Math.round(g * 255), Math.round(b * 255)];
	}