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())