var id;
var req;
function loadXMLDoc(url){
 req = null;

if (window.XMLHttpRequest) {
 req = new XMLHttpRequest();
 req.onreadystatechange = processReqChange;
 req.open("GET", url, true); 
 req.send(null);

} else if (window.ActiveXObject) {
	try {
		req = new ActiveXObject("Msxml2.XMLHTTP.4.0");
	} catch(e) {
	try {
		req = new ActiveXObject("Msxml2.XMLHTTP.3.0");
	} catch(e) {
	try {
		req = new ActiveXObject("Msxml2.XMLHTTP");
	} catch(e) {
	try {
		req = new ActiveXObject("Microsoft.XMLHTTP");
	} catch(e) {
		req = false;
	}
	}
	}
}
if (req) {
 req.onreadystatechange = processReqChange;
 req.open("GET", url, true);
 req.send();
}
}
}


function processReqChange(){

if (req.readyState == 4) {
if (req.status == 200) {

document.getElementById(id).innerHTML = req.responseText;
} else {
alert("Houve um problema ao obter os dados:\n" + req.statusText);
}
}
}

function segundavia(parametro){
	id='corpo';
	document.getElementById(id).innerHTML = '<div align="center"><br><br><img src="images/loading.gif" /></div> ';
	loadXMLDoc("ajax.php?action=segundavia&id="+parametro+"&rand="+Math.random ( ));
}
function evento(parametro){
	id='eventoCorpo';
	document.getElementById(id).innerHTML = '<div align="center"><br><br><img src="images/loading.gif" /></div> ';
	loadXMLDoc("ajax.php?action=evento&"+parametro+"&rand="+Math.random ( ));
}
function calendario(parametro){
	id='calendario';
	document.getElementById(id).innerHTML = '<br><br><img src="images/loading.gif" />';
	loadXMLDoc("ajax.php?action=calendario&"+parametro+"&rand="+Math.random ( ));
}