Jquery colorbox, no right border on theme 3

hello, i’m french so sorry for my english 🙂

i’m making a website for ma basketball team and i want a cool photo gallery. so, i use Nextgen and jquery colorbox, but i have a problemes :

link

jquery doesn’t display the right border of the theme 3, is it a conflit with nextgen or my theme (twenty ten)

Thanks for reading,

http://wordpress.org/extend/plugins/jquery-colorbox/