function startCalendar(){
	getCalendar(null);
}

function getCalendar(calDate){
	CloseWindow();
	var url = "ajax/calendar.php";
	var params = new Array();
	var date = new Date();
	params.push(date.getTime());
	if(calDate != null) params.push("date=" + calDate);
	sendHttpRequest(url + '?' + params.join("&"), showCalendar);
}

function showCalendar(rText){
	var e = document.getElementById('calendar_data');
	e.innerHTML = rText;
}

function getEvents(eventDate){
	var url = "ajax/calendar_event.php";
	var params = new Array();
	var date = new Date();
	params.push(date.getTime());
	params.push("day=" + eventDate);
	sendHttpRequest(url + '?' + params.join("&"), showEvents);
}

function showEvents(rText){
	var e = document.getElementById('event_container');
	e.style.display = 'block';
	e.innerHTML = rText;
}

function CloseWindow(){
	var e = document.getElementById('event_container');
	e.style.display = 'none';
}