datetoday = new Date();
timenow=datetoday.getTime();
datetoday.setTime(timenow);
thehour = datetoday.getHours();
if (thehour > 18) display = "Abend";
else if (thehour >12) display = "Nachmittag";
else display = "Morgen";
var greeting = ("Guten " + display );
document.write(greeting);

var Datum2 = new (Date);
var Tag2 = Datum2.getDate();
var Wochentag = Datum2.getDay();
var Monat2 = Datum2.getMonth();
var Jahr2 = Datum2.getFullYear();
var Tagname = new Array(" am Sonntag"," am Montag"," am Dienstag"," am Mittwoch"," am Donnerstag"," am Freitag"," am Samstag");
var Monatname = new
Array("Januar","Februar","März","April","Mai","Juni","Juli","August","September","Oktober","November ","Dezember");
document.write(Tagname[Wochentag]+", "+Tag2+". "+Monatname[Monat2]+" "+Jahr2+" ");