function day2(unit)
{
	var dt = new Date();
	var tmp_month = dt.getMonth()+1;
	var tmp_day = dt.getDate();
	var year = dt.getFullYear();	
	var tmp_hours = dt.getHours();	
	var tmp_minutes = dt.getMinutes();	

	tmp_month += "";
	tmp_day += "";
	year += "";
	tmp_hours += "";
	tmp_minutes += "";

	if (tmp_month.length == 1)
	{
		var month= "0"+tmp_month;
	}
	else
	{
		var month= tmp_month;
	}

	if (tmp_day.length == 1)
	{
		var day= "0"+tmp_day;
	}
	else
	{
		var day= tmp_day;
	}

	if (tmp_hours.length == 1)
	{
		var hours= "0"+tmp_hours;
	}		
	else
	{
		var hours= tmp_hours;
	}

	
	if (tmp_minutes.length == 1)
	{
		var minutes= "0"+tmp_minutes;
	}
	else
	{
		var minutes= tmp_minutes;
	}

	var date2 = day + "." +  month + "." + year + " " + hours + ":" + minutes;

//
	if (unit == 'day')
	{
		day = day-1;
	}
	if (unit == 'month')
	{
		month = month-1;
	}
	if (unit == 'year')
	{
		year = year-1;
	}
//


	var date_str = month +","  + day + ","  + year;
	var dt = new Date(year, month-1, day, hours, minutes);

	tmp_month = dt.getMonth()+1;
	tmp_day = dt.getDate();
	year = dt.getFullYear();	
	tmp_hours = dt.getHours();	
	tmp_minutes = dt.getMinutes();	


	tmp_month += "";
	tmp_day += "";
	year += "";
	tmp_hours += "";
	tmp_minutes += "";


	if (tmp_month.length == 1)
	{
		var month= "0"+tmp_month;
	}
	else
	{
		var month= tmp_month;
	}

	if (tmp_day.length == 1)
	{
		var day= "0"+tmp_day;
	}
	else
	{
		var day= tmp_day;
	}

	if (tmp_hours.length == 1)
	{
		var hours= "0"+tmp_hours;
	}		
	else
	{
		var hours= tmp_hours;
	}

	if (tmp_minutes.length == 1)
	{
		var minutes= "0"+tmp_minutes;
	}
	else
	{
		var minutes= tmp_minutes;
	}
	var date1 = day + "." +  month + "." + year + " " + hours + ":" + minutes;



	var element1 = document.getElementById("f_date_b");
	element1.value = date1;

	var element2 = document.getElementById("f_date_b2");
	element2.value = date2;

}