How do you add a div next to an already centered div?

I am trying to get this adsense div to the right of a div that is already centered. How can I do this? Link is here http://www.wholesalechecklist.com/index2.html

Thanks

 

Took a quick look at your code, one thing that needs changing is the fact that you are using an id more than once (#maincontainer). You must only use an id once. Might not solve your problem but it definitely needs fixing.

 

Ahh thanks for that catch. I fixed that, but the problem still isnt solved. Any other ideas?

 

Just to confirm
do you want the adsense ads to be outside the main content that is outside the white area?

as far as I can see your adsense ads are on right side in the white area
just add padding for right on your page and it will look good

 

fixed. changed a little, and is now the default index page. thanks.