Works for me: http://jsbin.com/axehe
Perhaps you haven't included jQuery UI Effects core? That's where switchClass comes from: http://jqueryui.com/demos/switchClass/ If you're just using jQuery, and don't need to animate the switch, toggleClass is what you want: http://docs.jquery.com/Attributes/toggleClass - Richard On Sun, Jul 19, 2009 at 1:40 PM, Lucian Cioranu <lucian.cior...@gmail.com>wrote: > > Hi, > > I am trying to change the class of <body> using switchClass, and it is > not working. AddClass and removeClass are working just fine. > > Anyone has a solution for that? >