jQuery Cycle 1 pixel shift after animiation

jQuery Cycle 1 pixel shift after animiation

I am using cycle to animate 4 div's on a website I am working on. On some versions of IE 7 and 8 as the cycle plugin animates between 'slides' it appears to shift the slide 1 pixel to the right then back 1 pixel to the left.

Here is the site:  http://westfield.peex.co.uk/

I cannot get to the bottom of this issue as the CSS all validates and I have implemented the cycle plugin correctly. Any help would be really appreciated as I am now stuck for a solution.