Fixed "this" being undefined in the user callback function so it can be used as a reference to the jQuery object being animated.
Fixed "this" being undefined in the user callback function so it can be used as a reference to the jQuery object being animated.

pascalduez/jquery.cssAnimateAuto,davidtheclark/jquery.cssAnimateAuto,davidtheclark/jquery.cssAnimateAuto,pascalduez/jquery.cssAnimateAuto