Animate broken after ? jQuery update

Animate broken after ? jQuery update

 
Hi,
 
At 4pm local time yesterday, some specific functions have stopped working.  They were fixed by changing from the latest jquery library linked from Google, to an older (1.6.1 or something) that is saved locally.
 
Is there a change(or bug) in the latest library that would render this function broken?  The symptom is the images-dropox div (and some others) animate to a 0 width and 0 height on page load rather than responding to the toggle. 
  1. function ImageMenu() {
     jQuery('#images-tab').toggle(function(){
      jQuery(this).stop().animate({ width: '450', duration: 'slow' }).css({ WebkitBorderBottomLeftRadius: 0 });
      jQuery('#images-dropbox').stop().animate({ height: '190', width: '450', duration: 'slow' });
      },
      function(){
      jQuery(this).stop().animate({ width: '70', duration: 'slow' }).css({ WebkitBorderBottomLeftRadius: 5 });
      jQuery('#images-dropbox').stop().animate({ height: '0', width: '0', duration: 'slow' });
      });
    }








    Site is fixed for now with the older jquery but I naturally would like to return to using the latest library.