function show(divId){
	var divToShow = document.getElementById(divId);
	divToShow.style.visibility = "visible";
	divToShow.style.display = "block";
}


function hide(divId){
	var divToShow = document.getElementById(divId);
	divToShow.style.visibility = "hidden";
	divToShow.style.display = "none";
}


function selectStartDay(day, month, year){
	hide('selectStartDay');

	var startDaySelectMenu = document.getElementById('startDay');
	startDaySelectMenu.selectedIndex = day - 1;
	
	var startMonthSelectMenu = document.getElementById('startMonth');
	startMonthSelectMenu.selectedIndex = month - 1;
	
	var startYearSelectMenu = document.getElementById('startYear');
	var date = new Date();
	var currentYear = date.getFullYear();
	if(year == currentYear){
		startYearSelectMenu.selectedIndex = 1;
	}else{
		startYearSelectMenu.selectedIndex = 0;
	}
}


function selectEndDay(day, month, year){
	hide('selectEndDay');
	
	var endDaySelectMenu = document.getElementById('endDay');
	endDaySelectMenu.selectedIndex = day - 1;
	
	var endMonthSelectMenu = document.getElementById('endMonth');
	endMonthSelectMenu.selectedIndex = month - 1;
	
	var endYearSelectMenu = document.getElementById('endYear');
	var date = new Date();
	var currentYear = date.getFullYear();
	if(year == currentYear){
		endYearSelectMenu.selectedIndex = 1;
	}else{
		endYearSelectMenu.selectedIndex = 0;
	}
}