$("#formID").submit(function() {
var form = $(this);
var error = false;
var data = form.serialize();
$.ajax({
type: 'POST',
url: 'mail.php',
dataType: 'json',
data: data,
beforeSend: function(data) {
form.find('input[type="submit"]').attr('disabled', 'disabled');
},
success: function(data) {
alert ('Message send!');
},
complete: function(data) {
form.find('input[type="submit"]').prop('disabled', false);
}
});
return false;
});