I am using a sliding menu, however I was having spacing issues between the DT elements and the LI elements (thumbnails) between different browsers. The only way I could get them to be the same, and how I wanted it was a work around by adding a top-margin to each UL which fixed it, but now the animation is glitchy. It snaps up after it slides. 

Any help is appreciated, thanks!

http://robpizzolato.com/jason (stay on the index page, site is obviously in progress and no links are functional, just trying to get the jquery right)