When using a <base> tag, tabs doesn't work

I created a demo for this problem:

http://jsfiddle.net/b5MHh/ - This is a basic working example of tabs.

http://jsfiddle.net/b5MHh/1/ - This is almost the same, only I've added a base tag:

<base href="http://www.examplt.com"> 

The bug: after adding base tag, the tabs are not working correctly - ignoring the div elements for the panels and adding new ones to the DOM instead.