automatically adjust width of embed objects in post pages?

Hello,

is it possible to automatically adjust width of embed objects (like box.net o scribd) in post pages?

Like this

http://i.imgur.com/l5RhdhH.png

instead of

http://i.imgur.com/nYDkyyb.png

In other themes you do nothing and the embed objects fits to the width.

In Hueman theme perhaps you have to change a bit of code?

Thank you