application.js

// Don't work
$( "#message_number_false" ).click(
	function() {
		$( "#call_back_text" ).show(100);
});

// Don't work
$( "#message_number_true" ).click(
	function() {
		$( "#call_back_text" ).hide(100);
});


// Work
$('.submittable').live('change', function() {
  $(this).parents('form:first').submit();
	return false;
});