// Criando uma instância do objeto XMLHttpRequest
var xhr;

function createXMLHttpRequest(){
	if (window.ActiveXObject){
		xhr = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else if (window.XMLHttpRequest){
		xhr = new XMLHttpRequest();
	}
	
	return xhr;
}

function deletaViagem(ida, volta, dia, hora){
//createXMLHttpRequest();
window.location = "excluir.php?ida="+ida+"&volta="+volta+"&dia="+dia+"&hora="+hora;

//xhr.open("GET", url);
//xhr.onreadstatechange = callback;
//xhr.send(null);

//alert (url);
	
}