Can't post with JQuery

[eluser]arnonymous[/eluser]
I'm actually having some similar problems now.
And i think a lot of problems comes from the linking.
Somehow i can't post using absolute links and i need to post with only "controller_function/" instead of "controller_name/controller_function/". I don't get the logic of that. place some alerts or echo's in the controller function and in the JS function to see if they all get called.