accordion/dimensions - Object doesn't support this property or method in IE6/7

[catch]

I've been using jquery 2.1, ui.accordion.js and jquery.dimensions.js - everything works fine in firefox, but in IE6/7 I get

Object doesn't support this property or method on line 169 when I click on an accordion tab - the tab moves but there's a lot of flicker. I'm assuming this is referring to jquery.dimensions.js, in which case it's the show part of:

$.ui.accordion.animations[settings.animated]({

toShow: toShow, toHide: toHide, finished: finished, down: down

});

I'm using this to define the accordion (unordered list):

$(document).ready(function(){

$("#flags") .accordion({

header: 'a.language', event: 'click' });

});

[joern]

Fixed in latest revision, soon to be released as jQuery UI 1.1 beta.