gistfile1.js

$('.remote_form').submit(function() {
	var form = $(this);
	var data = form.serializeArray();
	data.push({authenticity_token: AUTH_TOKEN});
	$.ajax({
		url : form.attr('action'),
		type : form.attr('method') || 'GET',
		data : data,
		success: function(response) {
			// do replacement
		}
	});
	return false;
});