I think Kant would say there are absolute morals. According to him "Act only according to that maxim by which you can at the same time will that it should become universal law." Example: suppose that you need money for an important reason (to eat maybe), and your friend has the money you need. But you know the only way he will loan you the money is if you promise to pay him back. But you also know that you will not be able to pay him back. So you ask yourself "should I promise to pay him back, even when I really can not?" According to Kant, you should apply his universalizablity to the situation, "can I will that promising to pay something back, but not paying something back be universal law?" The answer is that since this is obviously a contradiction of logic (X and not X), that you should not. At the same time you will that promises exist, you are also willing that promises should not exist. You could also add utility to the argument; if everyone promised to pay something back, but they were really lying, nobody would believe each other anymore, and society would not be able to function.
So like I said, Kant would say that there are universal morals.
I would add that according to my atheistic view, transcendental (beyond the physical universe) ethics do not exist, but universal ethics might exist (my mind is obviously not made up on this issue yet, although I am leaning towards Kant at the moment.)