gistfile1.js

My.AjaxForm = function(e) {
	var $e = $(e)
	, id = "#" + $e.attr("id")
	, redirect = $e.data("ajax-redirect")
	, target = $e.data("ajax-target")

	$e.ajaxSubmit({
		beforeSubmit: function(arr, $form, options) {
			$e.find(".btn[type=submit]").button('loading');
			$e.spin();
		},
		success: function(responseText, statusText, xhr, $form) {
			var $responseText = $(responseText)

			form = $responseText.find(id).html();
			if (!form) {
				form = $responseText.filter(id).html();
			}
			if (null === form && redirect) {
				$(location).attr("href", redirect);
				return false;
			}
			$form.html(form);

			if (target) {
				contents = $responseText.find(target).html();
				if (!contents) {
					contents = $responseText.filter(target).html();
				}
				$(target).html(contents);
			}
		},
		error: function(XMLHttpRequest, statusText, errorThrown) {
			$e.spin();
			alert(errorThrown);
			location.reload();
		}
	});
}