function ajax(url, data, target)
{
	$.ajax({
		type: "POST",
		url: url,
		data: data,
		complete: function(xhr) {
		    if(typeof target == 'undefined' && xhr.responseText != '')
            {
                alert(xhr.responseText);
            }
            else if(typeof target != 'undefined')
            {
                $( target ).html( xhr.responseText );
            }
		}
	});
}

function feliratkozas()
{
	var nev = document.getElementById('hirlevel_nev').value;
	var email = document.getElementById('hirlevel_email').value;

	ajax('_feliratkozas.php', 'nev=' + nev + '&email=' + email);
}