Class Animation: Use .attr( "class" ) instead of .attr( "className" ) and adjust the queueing logic for jQuery 1.6 compatibility. Fixes #7275 - $.effects.animateClass broken in jQuery 1.6."
Class Animation: Use .attr( "class" ) instead of .attr( "className" ) and adjust the queueing logic for jQuery 1.6 compatibility. Fixes #7275 - $.effects.animateClass broken in jQuery 1.6."

GrayYoung/jQuery.UI.Extension,GrayYoung/jQuery.UI.Extension