[jQuery] jQuery not obeying my css? or applying its own during effect?

[James Fleeting]

I have some image/text animation here http://www.smithsgardentown.com/
The big promo below the nav fades in and out. However, during the
effect it appears on top of my sidebar div and after the effect I
guess applies my css and drops behind it. I would like for the entire
effect to take place behind that div. Is jQuery applying its own css
or for some reason ignoring mine? Any help would be great.