This is the first of a series of small tips on jQuery and CSS. Sometimes there are effects you want to achieve or you have a small bug that should not be there, that is what my tips are aiming at.
Easing with jQuery as always been spotty, you first try to add easings with your animate effect, and… you are not really sure if it is working because there is no apparent error. Beside the default setting, you need a plug-in or jQuery UI to use other easings. The catch is, it is kind of hard to find this information, you have to look in the effects documentation at the bottom end.
If you are trying to decide which easing to use, this page has a nice way to show each easing effects with a curve.