function Datum2Str()
	{
	var jetzt = new Date();
	var Jahr = jetzt.getYear();
	if(Jahr < 1900)
	   Jahr += 1900;
	var Tag = jetzt.getDate();
	var Monat = jetzt.getMonth() +1;

	var Datum = Jahr+ "-";
	if(Monat < 10)
		Datum = Datum +"0"+ Monat +"-";
	else
		Datum = Datum + Monat +"-";

	if(Tag < 10)
		Datum = Datum +"0"+ Tag;
	else
		Datum = Datum + Tag;
	return Datum;
	}

function DatumStrKurz(inputStr)
	{
	// ohne Jahreszahl
	var retVal = inputStr.substr(5,5);
	return retVal;
	}

function DatumFull2Date(inputStr)
	{
	var retVal = inputStr.substr(0,10);
	return retVal;
	}

function DatumFull2Time(inputStr)
	{
	var retVal = inputStr.substr(11,8);
	return retVal;
	}

function DatumEng2Ger(inputStr)
	{
	var Jahr    = inputStr.substr(0,4);
	var Monat = inputStr.substr(5,2);
	var Tag     = inputStr.substr(8,2);
	var Zeit     = inputStr.substr(11,8);
	var retVal  = Tag+"."+Monat+"."+Jahr+", "+Zeit;
	return retVal;
	}

function SeasonGreetings()
	{
	var Datum = Datum2Str();
	var DatumKurz = DatumStrKurz(Datum);

	// Easter
	if ((Datum >= "2006-04-14") && (Datum <= "2006-04-17"))
			{
			var x = (screen.width -750)/2;
			var y = (screen.height -500)/2;
			window.open("Greetings/Ostern.html", "Greetings","toolbar=no,screenX="+x+",screenY="+y+",width=750,height=500,directories=no,status=no,scrollbars=no,resize=no,menubar=no");
			}
	// Halloween
	if (DatumKurz == "10-31")
			{
			var x = (screen.width -750)/2;
			var y = (screen.height -500)/2;
			window.open("Greetings/Halloween.html", "Greetings","toolbar=no,screenX="+x+",screenY="+y+",width=750,height=500,directories=no,status=no,scrollbars=no,resize=no,menubar=no");
			}
	// X-mas
	if ((DatumKurz >= "12-23") || (DatumKurz <= "01-02"))
			{
			var x = (screen.width -750)/2;
			var y = (screen.height -500)/2;
			window.open("Greetings/Xmas.html", "Greetings","toolbar=no,screenX="+x+",screenY="+y+",width=750,height=500,directories=no,status=no,scrollbars=no,resize=no,menubar=no");
			}
	}