<form action="" method="post" id="form" name="form" enctype="multipart/form-data">
<input name="action" type="submit" value="Send" />
</form>

$("#form").submit(function() {
    setTimeout(function() {
        // .prop() requires jQuery 1.6 or higher
        $("#form :submit").prop("disabled", true);
    }, 100);
});

$('#form').submit(function() {$(this).find('input:[type="submit"]').button({disabled:true})});

$('#form').submit(function() {
  $(this).find('input[type="submit"]').disable();
});

<button type="button" >not submit</button>