Cufon problem when animating containing divs in IE6/7

Question

I've come across a bug in Internet Explorer's 6 and 7 when animating the containing div of cufon'd text.

I used the following tutorial to create a featured content slider for my homepage - http://www.queness.com/post/274/jquery-sliding-tab-menu-for-sidebar-tutorial

The problem I'm having is that when the content slides to the next tab, in IE6/7 the containing div slides as it should, but the cufon text stays in the same place.

You can see an example of this at - http://callcredit-html.epiphanydev2.co.uk - username: demo , password: demo

Any idea if this can be fixed/solved? Thanks,