function getTheDay(i) {
	var today = new Date();
	var year = today.getYear();
	if (year < 2000) {
		year = year+1900;
	}
	var month = today.getMonth()+1;
	var day = today.getDate()+i;

	if (day > 31) {
		day= day-31;
		month++;
	}
	var thisDate=day +"."+ month +"."+ year;
	return (thisDate);
}

function setDates(){
	document.form.anreise.value=getTheDay(1);
	document.form.abreise.value=getTheDay(3);
}