hey everybody...
i'm almost finished with my website, but i have a question (like always)... i hope i used css correctly in order to do this, but, i've got like 13-17 pages of content pages on my site and i wanted to add that huge google ad on the left and right margins. so, is there any way i can use css (or another idea) where i can just put it on my css style sheet so that i don't have to go in and do each page manually? or, if i assume that my css style sheet is correct and organized correctly, is there any code i can include to do this? any help would be great.

thanks so much.