Rails 3 :method => "delete" JS in jQuery

$("a[data-method='delete']").live("click.delete", function() {
  var $e = $(this);
  if ($e.attr("data-confirm")) {
    if (!confirm($e.attr("data-confirm"))) {
      return false;
    }
  }
  var $form = $("<form />");
  $("<input />").attr({
    type: "hidden",
    name: "_method",
    value: "delete"
  }).appendTo($form);
  $form.bind("submit", function() {
    $.ajax({
      type: "POST",
      url: $(this).attr("action"),
      data: $(this).serialize()
    });
    return false;
  }).submit();
  return false;
});