// datum
var curDate 	= new Date();
var day	 		= curDate.getDate();
var monthIndex	= curDate.getMonth();
var year		= curDate.getFullYear();

// tage pro monat
var monthsDays	= new Array(31, (year%400==0||(year%4==0 && year%100!=0))?29:28, 31, 30, 31, 30, 31, 31, 30, 31, 30, 31);
var monthDays	= monthsDays[monthIndex];


function getDaysOptions()
{
	var ret = '';
	for (var i=1; i<monthDays+1; i++)
	{
		ret += '<option value="'+i+'"'+((i==day)?' selected="selected"':'')+'>'+i+'</option>';
	}
	return ret;
}

function getMonthsOptions()
{
	var ret = '';
	for (var i=1; i<13; i++)
	{
		ret += '<option value="'+i+'"'+((i==monthIndex+1)?' selected="selected"':'')+'>'+i+'</option>';
	}
	return ret;
}

function getYearsOptions()
{
	var ret = '<option value="'+year+'" selected="selected">'+year+'</option><option value="'+(year+1)+'">'+(year+1)+'</option><option value="'+(year+2)+'">'+(year+2)+'</option>';
	return ret;
}