function setDateVom() {
	var vom = new Date();
	var x = vom.getTime();
	x = x - (30 * 24 * 60 * 60 * 1000);
	vom.setTime(x);
	document.getElementById("vom").value = vom.getFullYear() + "/" + (vom.getMonth() + 1) + "/" + vom.getDate();
}

function setDateBis() {
	var bis = new Date();
	document.getElementById("bis").value = bis.getFullYear() + "/" + (bis.getMonth() + 1) + "/" + bis.getDate();
}

var request = createRequest();
function createRequest() {
	var request = null;
	try {
		request = new XMLHttpRequest();
	} catch ( e ) {
		try {
			request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch ( e ) {
			try{
				request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch ( e ) {
				alert("Couldn't create request!");
			}
		}
	}
	return request;
}

function sendRequestRadio() {
	var top = document.getElementById('top').value;
	var sender = document.getElementById('sender').value;
	var vom = document.getElementById('vom').value;
	var bis = document.getElementById('bis').value;
	
	request.open('get', document.getElementById('radio_input').value + 'radio.php?top=' + top +
																				'&sender=' + sender +
																				'&vom=' + vom +
																				'&bis=' + bis);
	request.onreadystatechange = handleResponseRadio;
	request.send(null);
}

function sendRequestInterpret(sender, vom, bis, interpret) {	
	request.open('get', document.getElementById('radio_input').value + 'interpret.php?sender=' + sender +
																					'&vom=' + vom +
																					'&bis=' + bis +
																					'&interpret=' + interpret);
	request.onreadystatechange = handleResponseRadio;
	request.send(null);
}

function sendRequestSong(sender, vom, bis, interpret, name) {	
	request.open('get', document.getElementById('radio_input').value + 'song.php?sender=' + sender +
																			   '&vom=' + vom +
																			   '&bis=' + bis +
																			   '&interpret=' + interpret +
																			   '&name=' + name);
	request.onreadystatechange = handleResponseRadio;
	request.send(null);
}

function handleResponseRadio() {
	if ( 4 == request.readyState ) {
		document.getElementById('radio_output').innerHTML = request.responseText;
	}			
}