Sean Catchpole has created a new jQuery plugin called idTabs. Although not as feature rich as some alternatives, the beauty of this plugin is in its simplicity. As usual these days, everything behaves differently in each browser. Safari on Windows behaves very badly. He mentioned on the jQuery mailing list that he wanted to know how well it worked in Safari on Windows. Sorry Sean, not very well.
Don’t let this discourage you from checking out this neat jQuery plugin, idTabs.