在jquery选项卡下按需加载usercontrols

I have few jquery tabs on a usercontrol that loads a separate user control under each. Each user control is unique. It all works fine right now but the overall page response is too slow. In order to improve performance I am trying to load few user controls under these tabs on demand (that is on click of tab). Possibly without post back... ajaxish. Can anyone guide me? I tried to follow I have few jquery tabs on a usercontrol that lo