DayName = new Array(7)
DayName[0] = "Niedziela "
DayName[1] = "Poniedziałek "
DayName[2] = "Wtorek "
DayName[3] = "Środa "
DayName[4] = "Czwartek "
DayName[5] = "Piątek "
DayName[6] = "Sobota "

MonthName = new Array(12)
MonthName[0] = "Stycznia "
MonthName[1] = "Lutego "
MonthName[2] = "Marca "
MonthName[3] = "Kwietnia "
MonthName[4] = "Maja "
MonthName[5] = "Czerwca "
MonthName[6] = "Lipca "
MonthName[7] = "Sierpnia "
MonthName[8] = "Września "
MonthName[9] = "Października "
MonthName[10] = "Listopada "
MonthName[11] = "Grudnia "

function getDateStr(){
    var Today = new Date()
    var WeekDay = Today.getDay()
    var Month = Today.getMonth()
    var Day = Today.getDate()
    var Year = Today.getFullYear()

    if(Year <= 99)
        Year += 1900

    return DayName[WeekDay] + "," + " " + Day + " " + MonthName[Month] + ", " + Year
}
document.write(getDateStr())