gradient background and login screens

[DoB Rhapsody]

I've got a little problem. I've edited my template so there is one long image in the background that has gradients on both sides of the forum, exactly like this site. The problem is that on any page that redirects, the redirect table is to large and goes outside the content area and onto each side of the gradient. If you make a post or login on this site you can see that the box is fixed and a certain size. I need to know what to edit so that i can make that box smaller.

Also, is there a template that all redirect screens use or is there multiple templates i'll have to edit for each screen like when logging in and making a post?

EDIT: Found it, STANDARD_REDIRECT