Post overflows onto Div Column

I have used a custom built theme for my blog. Some of my posts have a flash movie in them. I’ve also used many flash display plugins and just simply pasting the code in for the embedding of the movie – but I can’t figure out why it overflows on my right hand column.

See here: http://www.campuskey.com/chinese/chinese-empire/

I have my flash movie set to be 100% so that when a user resizes their window, it stays proportional since my center column is fuild width and sidecolumns are fixed.

Thank you in advance for any help.